Peltier
THERMOCOOLERS
PELONISTECHNOLOGIES.COM
MODULES &
COOLER UNITS
peltier
Peltier Thermocoolers create a heat flux between two
different types of materials when an electric current
passes through them. These devices consist of two
types of semiconductors joined together at a junction. When a current flows, heat is absorbed at one
junction (the cooling side) and released at the other
junction (the heating side). This results in cooling on
one side and heating on the other.
efficiency compared to using either technology alone,
especially in applications where high heat loads need to
be managed effectively.
The advantges of Peltier Thermocoolers include
compact size, solid-state operation, precise temperature control, quiet operation, and energy efficiency.
Overall, integrating Peltier Thermocoolers with cooling
fans provides a versatile and efficient cooling solution
suitable for various applications, ranging from electronics cooling to thermal management in industrial and
automotive systems.
FLEXIBLE COOLING SOLUTIONS
Peltier Thermocoolers can be combined with cooling
fans to enhance their cooling capabilities. This hybrid
cooling system leverages the strengths of both technologies for better thermal management.
By integrating a Peltier Thermocooler with a cooling
fan, the system gains several benefits:
Enhanced Cooling Capacity: The Peltier Thermocooler directly absorbs heat at one junction and releases it at the other, while the cooling fan efficiently
dissipates the generated heat.
Improved Heat Dissipation: Cooling fans prevent
overheating by dissipating heat from the Peltier module's hot side, ensuring optimal performance.
Increased Efficiency: Combining Peltier Thermocoolers and cooling fans boosts overall cooling
Flexible Control: Depending on specific requirements,
the cooling fan’s speed and operation can be adjusted to
complement the Peltier Thermocooler’s cooling performance.
APPLICATIONS
■ Electronics Cooling
■ Medical Devices
■ Food and Beverage
■ Automotive
■ Aerospace
■ Lab Equipment
■ Precision Machining
For additional information or for assistance with your
application, contact us at sales@pelonistech.com.
CONTENTS
OVERVIEW OF PELTIER THERMOCOOLER MODULES
3
THERMOCOOLER MODULE PART SERIES
4-5
USING PELTIER THERMOCOOLER MODULES
6-7
OVERVIEW OF COOLER UNITS
8
COOLER UNIT PRODUCTS
9-10
HIGH PERFORMANCE COOLING UNITS
11-12
USAGE INSTRUCTIONS FOR THERMOCOOLER UNITS
13-14
PELTIER MODULES/COOLER UNIT APPLICATIONS
15
SELECTING A COOLER UNIT
16-17
TECHNICAL DATA
18
RELIABILITY TESTS
19
OVERVIEW OF PELTIER THERMOCOOLER MODULES
WHAT ARE PELTIER MODULES
A Peltier Thermocooler Module, a semiconductor component, allows for cooling, heating, and precise temperature control using direct
current. By applying direct current to a Peltier Module, you can harness the following functionalities:
1. Temperature Gradient: A temperature difference occurs between the two sides of the Peltier module.
2. Heat Transfer Mechanism: The low-temperature side exhibits an endothermic effect, while the high-temperature side displays an
exothermic effect. Consequently, heat flows from the low-temperature side to the high-temperature side, effectively functioning as
a heat pump.
3. Reversibility and Control: By simply reversing the current flow, the direction of the heat pump can be changed. Additionally,
adjusting the size of the current allows fine-tuning of the rate of heat transfer.
THE EVOLUTION OF PELTIER MODULES
The Peltier effect, first observed in 1834, found its practical application in electronic cooling during the 1960s when semiconductor
materials became more widely accessible. As efficient electronic cooling elements became available, this effect gained prominence.
Notably, it is more pronounced in circuits that incorporate dissimilar semiconductors. Essentially, the Peltier effect allows for precise
temperature control using direct current and has practical applications in refrigeration, thermoelectric coolers, and climate-controlled
environments.
KEY ATTRIBUTES OF PELTIER COOLING
When compared to conventional refrigeration systems that rely on compressors and coolant (such as CFC gas), electronic cooling
through Peltier modules offers the following distinct features:
1. Environmentally Friendly: Peltier cooling does not use CFC gas or similar substances, ensuring no adverse environmental impact.
2. Simple Storage: There is no risk of coolant or corrosive liquid leakage, making storage straightforward.
3. Flexible Design: Peltier modules can be customized freely to suit various applications, adapting to different shapes and sizes.
4. Compact Elements: Peltier modules are small and compact, allowing for targeted cooling in specific areas.
5. Dual Functionality: By reversing the direction of the current, Peltier modules can provide both heating and cooling capabilities.
6. Room Temperature Maintenance: Achieving and maintaining temperatures close to room temperature is feasible due to this dual
functionality.
7. Highly Responsive: Peltier cooling systems rapidly respond to temperature changes, adjusting to become either hot or cold as
needed.
8. Precise Temperature Control: Fine-tuning temperature regulation is possible by adjusting the applied voltage.
9. Quiet Operation: Peltier systems operate without vibration or noise.
10. User-Friendly: They are easy to operate and maintain, making them accessible for various applications.
In summary, Peltier cooling offers efficient and versatile temperature control without the limitations associated with traditional refrigeration methods.
Principle of Peltier Modules
Heat Absorption
Low Temperature
N-Type
Semiconductor
Metal
P-Type
Semiconductor
High Temperature
Thermal Radiation
Thermal Radiation
Electric Current (I)
V
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THERMOCOOLER MODULE PART SERIES
New Thermal-Stress Relaxation Structure
Cooling Surface
Standard Type
Heat Released Surface
GL Structure
(resin junction)
flow back
and forth
and around
2-Tier Cascade Module
Lc
Lc
PorN
Semiconductor
Chip
PorN
Semiconductor
Chip
flow back
and forth
and around
Wc
Wc
Wh
Reversal of Polarity
Expansion
H
Contraction
Heat Released Surface
Wh
H
Lh
Cooling Surface
Lh
GL-II Module
Model Number
Imax
(A)
PELFPH-13102NC
PELFPH-17102NC
Vmax (V)
∆Tmax (°C)
Qmax (W)
Th = 27°C
3.8
2.0
∆Tmax (°C)
Qmax (W)
Th = 50°C
4.4
8.8
10.2
70.0
77.0
Dimensions (mm)
Lc
Wc
Lh
Wh
5.0
15.0
15.0
11.2
20.0
20.0
PELFPH-112702AC
15.7
18.2
19.5
30.0
30.0
PELFPH-13103NC
3.8
7.3
8.0
15.0
15.0
18.0
20.0
20.0
PELFPH-17103NC
3.0
8.8
70.0
16.6
77.0
PELFPH-112703AC
15.7
29.8
32.5
30.5
30.0
PELFPH-13104NC
3.8
8.6
9.5
15.0
15.0
20.9
20.0
20.0
PELFPH-17104NC
3.9
8.8
18.7
70.0
77.0
PELFPH-112704AC
15.7
35.2
39.0
30.0
30.0
PELFPH-13106NC
3.8
13.0
14.3
15.3
15.0
32.7
20.0
20.0
PELFPH-17106NC
6.0
8.8
70.0
29.7
77.0
PELFPH-112706AC
15.7
53.1
59.1
30.1
30.0
PELFPH-11707NC
2.1
7.4
8.2
15.0
15.0
14.9
20.0
20.0
PELFPH-13107NC
PELFPH-17107AC
6.0
3.8
13.6
70.0
34.2
30.0
30.0
PELFPH-112707AC
15.7
55.6
61.0
40.0
40.0
PELFPH-11708NC
2.1
10.3
11.3
15.0
15.0
PELFPH-13108NC
3.8
18.8
20.8
20.0
20.0
48.0
30.0
30.0
85.0
40.0
40.0
PELFPH-17108AC
8.5
PELFPH-112708AC
8.8
31.1
77.0
70.0
8.8
43.1
15.7
77.0
77.1
H
4.70
4.75
3.80
3.85
3.60
3.65
3.10
3.15
3.90
3.95
3.40
3.45
GL-II Module 2-Tier Cascade Module (cooling only)
Model Number
Imax
(A)
Vmax (V)
PELFPK-219808NC
8.5
16.1
∆Tmax (°C)
Qmax (W)
Th = 27°C
85.0
∆Tmax (°C)
Qmax (W)
Th = 50°C
51.6
95.0
Dimensions (mm)
Lc
58.0
Wc
40.0
Lh
Wh
40.0
H
7.05
GL MODULE COMMON SPECIFICATIONS
• Temperature Range Assurance: The GL Module is guaranteed to operate within a temperature range of -40°C to 100°C (with the
suggested maximum temperature on the radiating side).
• PVC Coating: This product features a PVC coating that adheres to UL standards.
• Silicone Comparison: Similar to the KE347 product. It’s important to note that only the lateral side is not fully sealed for
moisture-proof and waterproof measures.
USAGE PRECAUTIONS FOR PELTIER MODULES
• Temperature Limits: Ensure that the Th-side (hot side) of the Micro Module does not exceed 80°C, or 90°C for other modules.
• Handle with Care: Avoid dropping or subjecting the unit to mechanical shock, as it may lead to breakage. Handle the product
carefully.
• Surface Contact: Proper surface contact between the Peltier Module and the heat exchanger is crucial for its functionality. Ideally,
keep any deviation from flatness under 0.02mm.
• Thermally Conductive Grease: Apply a thin layer of thermally conductive grease between the Peltier Module surface and the heat
exchanger.
• Optimal Voltage and Current: Maximum efficiency is not achieved at maximum voltage or current. It is recommended to set the
voltage and current to approximately 70% of the maximum.
• Cascade of Micro Modules: Rapidly changing the current polarity as a modulation method will shorten the unit’s lifespan. Avoid
using this method of operation.
• Vmax Specifications: The specifications listed for Vmax are measured at a temperature of Th = 27°C.
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GL-II Module
Model Number
PELTECH-11703
PELTECH-13103
PELTECH-13503
PELTECH-17103
PELTECH-112703
PELTECH-11704
PELTECH-13104
PELTECH-13504
PELTECH-17104
PELTECH-112704
PELTECH-11705
PELTECH-13105
PELTECH-13505
PELTECH-17105
PELTECH-112705
PELTECH-11706
PELTECH-13106
PELTECH-13506
PELTECH-17106
PELTECH-112706
PELTECH-11707
PELTECH-13107
PELTECH-13507
PELTECH-17107
PELTECH-112707
PELTECH-11708
PELTECH-13108
PELTECH-13508
PELTECH-17108
PELTECH-112708
PELTECH-112712
PELTECH-112715
PELTECH-16308
PELTECH-119908
PELTECH-119913
PELTECH-S13102
PELTECH-S17102
PELTECH-S112702
PELTECH-S13103
PELTECH-S17103
PELTECH-S112703
PELTECH-S13104
PELTECH-S17104
PELTECH-S112704
PELTECH-S13106
PELTECH-S17106
PELTECH-S112706
PELTECH-S114304
PELTECH-16025
Imax (A)
3.5
4.0
5.0
6.0
7.0
8.5
12.0
15.0
8.5
13.0
Vmax (V)
2.1
3.8
4.2
8.6
15.4
2.1
3.8
4.2
8.6
15.4
2.1
3.8
4.2
8.6
15.4
2.1
3.8
4.2
8.6
15.4
2.1
3.8
4.2
8.6
15.4
2.1
3.8
4.2
8.6
15.4
7.6
25.8
6.3
4.0
6.0
3.9
7.0
8.0
16.0
29.0
4.2
7.5
8.4
17.0
32.0
5.5
10.0
11.0
23.0
41.0
7.1
13.0
14.5
29.0
53.0
7.5
13.6
15.4
31.0
55.0
10.0
18.0
20.0
42.0
75.0
110.0
130.0
37.4
118.0
200.0
3.7
8.5
15.2
6.5
15.0
27.0
8.1
18.7
33.4
12.2
27.9
50.5
40.0
68.0
68.0
68.0
68.0
68.0
68.0
68.0
24.1
4.0
3.0
Qmax (W)
Th = 27°C
15.4
3.8
8.6
15.4
3.8
8.6
15.4
3.8
8.6
15.4
3.8
8.6
15.4
17.3
2.0
∆Tmax (°C)
66.0
66.0
66.0
66.0
68.0
125.0
∆Tmax (°C)
Qmax (W)
External Dimensions (mm)
L
W
15
20
15
20
15
30
40
15
20
15
30
40
15
20
15
30
40
15
20
15
30
40
15
20
15
30
40
15
20
15
30
40
40
50
20
40
50
15
20
30
15
20
30
15
20
30
15
20
30
40
Wh=48
Wc=40
30
40
15
20
30
40
15
20
30
40
15
20
30
40
15
20
30
40
15
20
30
40
40
50
40
50
15
20
30
15
20
30
15
20
30
15
20
30
40
Lh=48
Lc=40
H
4.7
4.7
4.1
4.0
3.7
3.8
3.7
3.5
3.8
3.5
5.1
3.8
3.6
3.3
3.7
5.5
Standard Type 2-Tier Cascade Module
Model Number
Imax (A)
Vmax (V)
PELTECH-219808
8.5
16.1
Th = 27°C
85.0
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51.6
Dimensions (mm)
L
Wh
H
40.0
40.0
7.05
5
USING PELTIER THERMOCOOLER MODULES
USING PELTIER MODULES
When direct current (DC) flows through a Peltier Module, the low-temperature side absorbs heat, while the high-temperature side
emits heat. As a result, a temperature difference is established across the module’s surfaces. The emitted heat is more responsive
to the electrical input than the absorbed heat. If continuous current passes through the module, the emitted heat will surpass the
absorbed heat, causing both sides of the unit to become hot. To efficiently dissipate this heat, it is essential to connect the module to
an aluminum heatsink.
A Peltier Thermocooler Module, positioned between a heatsink and a heat extractor (such as an aluminum block), serves as a cooling
device and is commonly referred to as a Cooler Unit.
ASSEMBLING A COOLER UNIT
1. Prepare the Heatsink: Clean the surface of the heatsink fins that will be attached to the Peltier Module. Remove any dirt or grease
using alcohol or a similar cleaning agent. Apply a thin layer of thermally-conductive silicone grease to the appropriate area on the
heatsink fins.
2. Prepare the Peltier Module: Similarly, clean the heat-emitting side of the Peltier Module using alcohol or a similar cleaning agent.
Apply a thin layer of thermally-conductive silicone grease to the heat-emitting side. Ensure that no foreign particles adhere to the
unit.
3. Assemble the Unit: Position the heat-emitting side of the Peltier Module onto the designated spot on the heatsink fins. While
gently pressing the unit, slide it back and forth (left and right) approximately 20 times. This ensures a snug fit and eliminates any
trapped air layers between the connecting surfaces (fig 1).
Aluminum Block
Peltier Module
Heatsink Fins
Heatsink Fins
fig 1. Installing the Peltier Module
fig 2. Installing the Aluminum Block
4. Prepare the Heat-Absorbing Side: Clean the heat-absorbing side of the Peltier Module thoroughly using alcohol or a similar
cleaning agent. Apply a thin layer of thermally-conductive silicone grease to this side.
5. Prepare the Aluminum Block: Similarly, clean the surface of the aluminum block that will be attached to the Peltier Module using
alcohol or a similar cleaning agent. Apply a thin layer of thermally-conductive silicone grease to the aluminum block.
6. Assemble the Unit: Place the aluminum block onto the heat-absorbing side of the Peltier Module. Apply gentle pressure to the
block and slide it back and forth, both left and right, to ensure a snug fit and eliminate any air gaps between the connecting
surfaces (fig 2).
7. Check Alignment and Secure Screws: Verify that the holes in the aluminum block align with the screw holes in the heatsink fins.
Place one of each type of washer (in the order: spring washer, flat washer, silicone washer) onto the fixing screws (SUS). Apply
liquid thread lock to the screws and then insert them into the holes.
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USING PELTIER THERMOCOOLER MODULES
8. Tighten Screws: Gradually tighten the screws until the washers are securely in place. To ensure uniform force distribution across
the module, apply 200-300N (for a 40mm square unit) of pressure to the center of the aluminum block. Tighten each screw
alternately, making small adjustments (fig 3).
Screw
fig 3. Tightening Screws
9. Torque Adjustment: Once the module is gently secured, continue tightening the screws in the same manner as step 8. Aim for a
torque of 10N-m initially, and then further tighten to a final torque of 20-30 N-m (for M3-M4 screws). Be cautious to avoid creating unbalanced stress on the unit. Tighten the screws alternately in the same manner as 8 above to a torque of 10N-m.
10. Allow Settling Time: After achieving the desired torque, let the unit stand for 30 to 60 minutes. Recheck the screw tightening
torque during this time. Additionally, remove any excess silicone grease. When M4 is tightened to 10N-m, approximately 100N of
axial tension is applied. For a single 40mm square module, tightening to 200-300N of axial tension is sufficient.
11. Seal Against Humidity: Protect the Peltier Module from humidity by sealing its perimeter with a silicone sealant or a similar material. Allow it to dry as required (fig 4).
12. Resistance Measurement: Once the above steps are complete, measure the resistance value of the unit to detect any abnormalities. Note that a normal tester cannot measure this resistance; an A/C 4 probe resistance gauge must be used.
Silicon Sealant or Similar
Aluminum
Block
Peltier Module
Heatsink Fins
fig 4. Humidity Protection for Peltier Module
Perimeter
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OVERVIEW OF COOLER UNITS
STANDARD COOLER UNITS
Our standard Electronic Cooler Units are designed to facilitate seamless integration into original products and systems. We’ve carefully
considered the challenges and complexities associated with designing new systems.
COOLER UNIT ARCHITECTURE
Finger Guard
Cooling Fan
Fin Cover
Terminal Block
Heatsink Fins
Peltier Module
Heat Insulation
Aluminum Block
Plastic Frame
COOLER UNIT EXAMPLE
PELFEC1811FP (see p. 9)
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PELFEC1715NP (see p. 10)
8
COOLER UNIT PRODUCTS
Cooling Side Surface
PELFEC1811FP
Function Diagram (background temperature 25ºC)
25
20
10
∆Tmax 45ºC/Qmax 36W
0
-10
-20
Plate Temperature / T [ºC]
Heat Absorption / Q [W]
36
30
20
10
0
Dimension Diagram
identification plate
attachment face
flange
5-M3 screw thread depth
flange
6-ø4 (attaching hole)
airflow
airflow
*bonded with
Insulok
airflow
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Peltier Module
PELFPH112708ACX1
Motive Power Source
DC12V 7A
Heat Radiation Method
Forced-Air Cooling via DC Fan
Dimensions (mm)
W100 x D126 x H107.8
Cooling Plate Dimensions
80mm x 55mm
9
COOLER UNIT PRODUCTS
PELFEC1715NP
Function Diagram (background temperature 25ºC)
25
20
∆Tmax 44ºC/Qmax 20W
10
0
-10
-19
Plate Temperature / T [ºC]
Heat Absorption / Q [W]
20
10
0
Dimension Diagram
red (+)
black (-)
4-M3 screw thread depth
*needs light chamfering
S/N imprinted
6-M4 screw thread depth
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Peltier Module
PELFPH112707MX1
Motive Power Source
DC12V 5A
Heat Radiation Method
Forced-Air Cooling
Dimensions (mm)
W80 x D104.5 x H45
Cooling Plate Dimensions
80mm x 54mm
10
HIGH PERFORMANCE COOLING UNITS
PELV-2 Series
PELV-2FL
PELV-2F
PELV-2FA
High Cooling Performance
Compact Design
FEATURES
• GL module incorporates an enhanced seal structure for water resistance, designed to effectively
absorb thermal stress.
• Flexible product design and easy installation.
Long Life Expectancy
• No screws to tighten results in better heat absorption and maximizes performance.
GL structure reliability involves rigorous polarity reversal testing.
Easy to operate, low assembly cost.
Options include heatsink design or water-cooling jacket.
Structure of PELV-2F System
Steel case-attached surface
Moistureproof resin
Aluminum Block
Cooling Feature Reference (Radiating Plate = 50°C)
50
Junction
40
30
20
10
0
-10
-18
Cooling Plate Temperature
Thermal stress absorption structure
(Peltier module (GL structure)
Aluminum plate
(Real Load) Heat Absorption
41
Radiating sink-mounted surface
30
20
10
0
Note 1: Actual measurement of heat absorption when passed load in vacuum.
Radiating plate surface temperature should be at 50°C.
Energized condition DC4A (constant current) Voltage level is approximately DC12V.
Note 2: When the cooling plate surface is at 50˚C, the ΔT should be 0˚C and the heat absorption is 41W.
When the cooling plate surface is at 18°C, the ΔT can only reach its maximum of 68˚C and the heat absorption is 0W.
Diagram
Cooling
Surface
Radiating
Surface
4 - M4 Screw Thickness 7
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Peltier Module
PELFPH112707AC
Motive Power Source
DC12V 5A
Heat Radiation Method
Forced-Air Cooling
Dimensions (mm)
70 x 70 x 27
Cooling Plate Dimensions
44.5mm x 44.5mm
11
HIGH PERFORMANCE COOLING UNITS
PELV-2C High ΔTmax Type
Cooling Feature Reference (Radiating Plate = 50°C)
50
40
30
20
10
0
10
-20
-31
Cooling Plate Temperature
(Real load) Heat Absorption
38
20
30
10
0
Note 1: Actual measurement of heat absorption when passed load in vacuum.
Radiating plate surface temperature should be at 50°C.
Energized condition DC5A (constant current) Voltage level is approximately DC12V.
Note 2: When the cooling plate surface is at 50˚C, the ΔT should be 0˚C and the heat absorption is 38W.
When the cooling plate surface is at 31°C, the ΔT can only reach its maximum of 81˚C and the heat absorption is 0W.
AWG 18
White (-)
S/N
Cooling
Surface
Radiating
Surface
Red (+)
PELV-2H High Power Type
Peltier Module
PELFPK219808NC
Motive Power Source
DC12V 5.5A
Heat Radiation Method
Forced-Air Cooling
Dimensions (mm)
70 x 70 x 30
Cooling Plate Dimensions
44.5mm x 44.5mm
Cooling Feature Reference (Radiating Plate = 50°C)
50
40
30
20
40
30
10
0
-10
-17
Cooling Plate Temperature
(Real load) Heat Absorption
55
50
20
10
0
Note 1: Actual measurement of heat absorption when passed load in vacuum.
Radiating plate surface temperature should be at 50°C.
Energized condition DC6A (constant current) Voltage level is approximately DC12V.
Note 2: When the cooling plate surface is at 50˚C, the ΔT should be 0˚C and the heat absorption is 55W.
When the cooling plate surface is at 17°C, the ΔT can only reach its maximum of 67˚C and the heat absorption is 0W.
AWG 18
4-M4 Depth 7
Blue (-)
Cooling
Surface
Radiating
Surface
Red (+)
JST VHR-2N
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Peltier Module
PELFPH112708AC
Motive Power Source
DC12V 6A
Heat Radiation Method
Forced-Air Cooling
Dimensions (mm)
70 x 70 x 26.5
Cooling Plate Dimensions
44.5mm x 44.5mm
12
USAGE INSTRUCTIONS FOR THERMOCOOLER UNITS
USAGE
1. Use the following to mount a cooler unit into the target item:
a) Use screw holes (M3, M4) in the aluminum block. (PELFEC1811FP-PELFEC1715FP)
b) Use the holes (4) in the fin cover flanges. (1811FP)
(a)
(b)
2. Connect the specified stabilized direct current to the terminal block (PELFEC1811FP) and Peltier Module (PELFEC1715NP).
(A cooling fan must also be connected to the PELF1715NP).
3. After checking that the polarities are correctly connected, turn on the power. As soon as the power is on, start the unit.
CAUTION NOTES REGARDING USAGE
1. Cooling Fan Operation: While the cooler unit is in use, ensure that you do not stop the cooling fan. Halting the fan could cause the
heatsink fins to overheat, potentially leading to damage of the Cooler Unit.
2. Voltage Levels: Please only use the rated value for the voltage levels input into the Cooler Unit. For the radiator fan, use the
voltage listed in the instruction manual (printed on the terminal block). If the voltage is lower than the rated value, the fan motor
will stop and lead to damage of the Cooler Unit. For the Peltier Module, use a voltage equal to or lower than that printed on the
terminal block.
3. Polarity Considerations: Avoid reversing the polarity of the power source to the Cooler Unit. Reversed polarity, without proper heat
radiation, can cause the cooling plate’s temperature to rise and lead to damage.
4. Shock and Impact: Handle the Cooler Unit with care to prevent shock or impact. Internal damage to the Peltier Module due to
shock may render the unit non-functional.
5. Connecting the Cooler Unit: Beware of the following four points when connecting the Cooler Unit to the target item:
a) Thinly spread thermally-conductive silicone grease between the aluminum block and the surface of the target item. Then, while
applying gentle pressure to the unit, slide it back and forth, left and right, to ensure a perfect fit.
b) Polish the connecting surfaces of the aluminum block and the target item to a deviation from flatness of within 0.02mm.
c) Insulate the aluminum block to protect its surface from condensation. If, during installation, surface condensation forms on the
block, do not allow the moisture to be in contact with the Cooler Unit for an extended period.
d) When heating, make sure that the surface temperature of the aluminum block does not exceed 60°C.
6. Mechanical Modifications: Do not attempt to mechanically modify the Cooler Unit.
7. Additional Notes:
a) Do not insert any objects into the cooling fan intake.
b) Avoid touching the terminal block as it can lead to electrical shock.
c) In case of apparent malfunction, turn off the power immediately.
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USAGE INSTRUCTIONS FOR THERMOCOOLER UNITS
NECESSARY PERIPHERAL EQUIPMENT
Stabilized DC Power Supply:
Ensure you use a stable DC power supply suitable for the rated value range of the Cooler Unit. The current supplied should match or
exceed the rated value.
OPTIONAL PARTS
Additional optional parts are available to suit your requirements:
COOLING SIDE FINS + FAN + EXCLUSIVE HOLDER
For use with PELFEC1715NP.
By attaching this to the cooling block, it is possible to produce a cool
airflow.
Cooling Side Fins
Exclusive Attachable
Holder
60mm Square Fan
LIQUID COOLING JACKET
Tailored for use with PELFEC1715NP, this design aims to maximize the
performance of the 1715NP.
FAN/HOLDER ASSEMBLY
Exclusively for use with PELFEC1715NP. Designed to bring out optimum
performance from 1715NP.
Exclusive
Attachable Holder
80mm Square Fan
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PELTIER MODULES/COOLER UNIT APPLICATIONS
There are currently a wide range of products that take advantage of Peltier Modules and Cooler Units.
INDUSTRIAL APPLICATIONS
■ Localized temperature control systems for industrial machines
■ Electronic Dehumidifiers (for dehumidifying the inside of precision industrial equipment)
■ Incubators (boxes for cultivating cells and microbes. Used in universities and biology labs)
■ Compact constant-temperature ovens (boxes that maintain a constant temperature. Used in universities and biology labs)
COMMERCIAL APPLICATIONS
■ Compact refrigerators (for hospitals and hotels)
■ Hand towel coolers/heaters (for coffee shops, salons, an driving ranges)
■ Compact refrigerator showcases (cool boxes for food)
■ Wine coolers (for restaurants)
■ Water coolers/heaters
■ Cool boxes/humidity retainers for operating rooms (hospitals)
■ Various cooling equipment for kitchens
CONSUMER APPLICATIONS
■ Cooler boxes for cars (hot/cold food storage boxes)
■ Silent compact refrigerators (for childrens rooms and bedrooms)
■ Electronic dehumidifiers (storage boxes for cameras and other sensitive equipment)
■ Water coolers (drinking water coolers)
■ Bottler coolers for cars (hot/cold storage for beverage cans)
■ Cosmetic coolers (for cooling cosmetics)
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SELECTING A COOLER UNIT
HOW TO SELECT A COOLER UNIT
When selecting a suitable Cooler Unit, you need to determine the heat absorption rate and temperature difference.
Examples of heat calculation when cooling in an enclosed environment.
Conditions:
Internal Dimensions of box : 500 x 200 x 100mm 10 Litres
External Dimensions
: 560 x 260 x 160mm
Thermal Insulation
: 30mm urethan foam
Internal Temperature
: 5°C
Background Temperature : 30°C
1. Thermal Conductivity λ
λ = 0.0025(W/m°C)
t = 0.03m
Thermal conductivity of urethane foam
Thickness of thermal insulation
2. Surface area of box (at center of thermal insulation) S
S = (0.53 x 0.23) x 2 + (0.23 x 0.13) x 2 + (0.53 x 0.13) x 2 = 0.44m2
3. Overall heat transfer rate K
Thermal conductivity of external surface h1 = 20 (W/m2 °C)
Thermal conductivity of internal surface h2 = 10 (W/m2 °C)
K = 1/{(1/h1) + (1/h2) + (t/ λ )}
= 1/{(1/20) + (1/10) + (0.03/0.025)}
= 0.74 (W/m2 °C)
4. Amount of heat entering the insulated box from external sources Q2
Q1 = S x K x Δ T
= 0.44 x 0.74 x (30-5)
5. Necessary heat absorption Q
Internal thermal loading from the water (in the case of loading from an internalhat source): Let Q2 = 5W
Q = Q1 + Q2 = 13.1W
6. Choice of Cooler Unit
Adding a safety margin of 25% to the necessary heat absorption gives 16.4W. In other words, a Cooler Unit that provides heat absorption over 16W and a temperature difference of at least 25 degrees is necessary.
Ex: PELFEC1715NP can easily give a 30 degree difference at 6W of heat absorption, so 16.4W/6W means roughly three units are
necessary.
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SELECTING A COOLER UNIT
Example of heat calculation when cooling in an enclosed container.
Conditions:
Internal Dimensions of box : 250 x 200 x 100mm 5 Litres
External Dimensions
: 310 x 260 x 160mm
Thermal Insulation
: 30mm urethan foam
Cooling Time
: 1 hour
Initial Water Temperature : 20°C
Cooled Temperature
: 10°C
Background Temperature : 30°C
1. Thermal Conductivity λ
λ = 0.025(W/m°C)
t = 0.03m
Thermal conductivity of urethane foam
Thickness of thermal insulation
2. Surface area of box (at center of thermal insulation) S
S = (0.28 x 0.23) x 2 + (0.23 x 0.13) x 2 + (0.28 x 0.13) x 2 = 0.26m2
3. Overall heat transfer rate K
Thermal conductivity of external surface
Thermal conductivity of internal surface
K = 1/{(1/h1) + (1/h2) + (t/ λ )}
= 1/{(1/20) + (1/200) + (0.03/0.025)}
= 0.8 (W/m2 °C)
h1 = 20 (W/m2 °C)
h2 = 200 (W/m2 °C)
4. Amount of heat entering the insulated box from external sources Q2
Q1 = S x K x Δ T
= 0.26 x 0.8 x (30-10)
5. Necessary heat absorption to cool the water Q2
Q2 = Cp x p x v x ΔT
To cool the water in one hour:
= 1 x 1 x 5 x (20-10)
Q2 = 50,000cal x 4.19J / 3600sec = 58.2W
(1cal = 4.19J 1J/s =1W)
= 50Kcal
6. Necessary heat absorption Q
There is no thermal loading from the water. Therefore, Q3 = 0
Q = Q1 + Q2 + Q3
= 4.2 + 58.2 + 0 = 62.4W
7. Choice of Cooler Unit
Adding a safety margin of 25% to the necessary heat absorption gives 78.0W. In other words, a Cooler Unit that provides heat absorption over 78W and a temperature difference of at least 20 degrees is necessary.
Ex: PELFEC1811P can easily give a 25 degree difference at 16W of heat absorption, so 78.0W/16W means roughly five units are
necessary. However, since the heat absorption calculations include the heat capacity of water, in actuality a smaller number of
units would perform the task (because the heat absorption is greater under powered conditions).
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TECHNICAL DATA
PELTIER THERMOCOOLER MODULE SPECIFICATIONS
 Maximum electric current value (Imax) and maximum voltage value (Vmax).
The maximum electric current and the maximum voltage values are not absolute maximum rated values but considering
performance coefficients and heat radiation design, it is recommended that products are used at about 70% of the maximum
electric current and voltage values.
If products are used with voltages and currents exceeding the maximum values, heat absorption will decrease and Joule heating will
increase. As a result, not only will efficiency be reduced, but the increase in temperature will have an adverse effect on the soldering
connecting the semiconductor, and could lead to damage.
PELTIER THERMOCOOLER MODULE FUNCTION DIAGRAMS
 Maximum temperature difference (∆Tmax) and maximum heat absorption (Qmax).
The maximum temperature difference is the temperature difference between the sides of the semiconductor when the heat
absorption is 0(W). Further, the maximum heat absorption is the heat absorption attained when the temperature difference
between the sides of the semiconductor is 0. These are both not actual values but theoretical figures; please use these as a
guide for choosing modules.
For the relationship between electric current, voltage, temperature difference and heat absorption, please consult the function diagrams.
(Ex. PELFPH112707AC)
What is the heat absorption (Qc) and supplied current (I) when Th = 50°C, Tc = 10°C, Voltage DC12V?
1. Find ∆T
∆T = Th-Tc
= 50-10 = 40°C
2. Find the supplied voltage from the function diagram
From the diagram, at Th = 50°C, I = 3.77A
3. Find the heat absorption (Qc) from the function diagram
The current found in 2 above is 3.77A. Result: from the diagram at Th = 50°C, Qc = 20.75W.
PELFPH112707 AC Function Diagram (Th=°C)
[2] I=3.77A
Tc(°C)
12V
Supplied Voltage (V)

Qc Heat Absorption

Qc(W)
[3] Qc=20.75W
Temperature Difference (°C)
ΔT=Th-Tc
Potential difference across the Peltier Module (V)
Connection between ∆T(ºC) for each supplied current and voltage (V)
Connection between ∆T(ºC) for each supplied current and heat absorption (W)
Heat absorption of Peltier Module (W)
Temperature difference (∆T) shows the temperature difference between the hot
side and cool side of the Peltier Module at the electrodes.
(Note: it is not the difference between the cool side and the background temperature).
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[1]
Tc
Semiconductor
ceramic
ΔT
Th
electrode
element
electrode
ceramic
3.77A
Ex: What is the heat absorption (Qc) and supplied
current (I) when Th=50°C Tc=10°C Voltage DC 12V?
1. Find ΔT ΔT=Th-Tc = 50-10 = 40°C
2. Find the supplied current when voltage is 12V and ΔT=40°C from the
Th=50°C function diagram  I = 3.77A
3. Find the heat absorption when current is 3.77A and ΔT=40°C from the
function diagram  Qc = 20.75W
18
RELIABILITY TESTS
Peltier Cooling Modules have passed stringent reliability tests. Specifically, the GL-II series Peltier Module has the highest level of
thermal stress in the industry and undergoes a grueling polarity reversal test to attain a durability of up to 50,000 cycles.
POLARITY SWITCHING TEST DATA
Conventionally Structured Products
Test Conditions
GL-II Structured Products
(thermal-stress relaxtion structured products)
Ambient Temperature
Superimposed Voltage
Heating Mode
Cooling Mode
25°C±3°C
8.7V
5min (Tcmax = approx. 80°C)
5min (Tcmax = below 20°C)
20.00%
Conventionally Structured Products - 1
Conventionally Structured Products - 2
Rate of Change in Resistance
Conventionally Structured Products - 3
15.00%
Conventionally Structured Products - 4
Conventionally Structured Products - 5
Conventionally Structured Products
GL Structured Products - 1
GL Structured Products - 2
GL Structured Products - 3
10.00%
GL Structured Products - 4
GL Structured Products - 5
5.00%
GL-II Structured Products
0.00%
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Number of Cycles
RELIABILITY TEST DATA
1. Test Category
Group
(L)
Life test
(E)
Environment
test
No.
Test Category
L-1
Continuous
operation test
Th = 50°C, T = 35°C
1,000 hours
Test Condition
Conformity Code
L-2
ON-OFF
Operation Test
Th = 50°C, T = 35°C
ON: 5 min, OFF: 5 min
5,000 cycles
EIAJ ED-4701/100 Test Method 106
L-3
Reverse
Polarity Test
Temperature:Tc = 20°C/80°C
Heating: 5 min, Cooling 5 min
15,000 cycles
Company Original
E-1
Prolonged
High Temp Test
+90°C, 1,000 hours
E-2
Prolonged
Low Temp Test
-40°C, 1,000 hours
E-3
Thermal
Shock Test
0°C/100°C, 5 min/5 min
10 cycles
E-4
Temp-Humidity
Cycling Test
+25°C ~ +65°C ~ -10°C
90~96% RH
10 cycles
E-5
Shock Test
Free fall from height of
25cm, 3 times
E-6
Vibration Test
100~200~100Hz,
200m/s2 4 min, 4 times
1 direction x 3 directions
EIAJ ED-4701/400 Test Method 403
E-7
Cord Pull Test
Pulling strength
20N (AWG#20)
Maintained 10 seconds
EIAJ ED-4701/400 Test Method 401
EIAJ ED-4701/100 Test Method 101
EIAJ ED-4701/200 Test Method 201
EIAJ ED-4701/200 Test Method 202
EIAJ ED-4701/300 Test Method 307
EIAJ ED-4701/200 Test Method 203
(old) JIS C7021A-8
2. Failure Criteria
• The module’s internal resistance value changes more than ± 10%
• Visual damage (cracked ceramic, detached cord, etc.)
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INNOVATION IN MOTION
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