MHP-TAM
DEVICES
Overtemperature Protection
For Lithium Polymer (LiP) and
prismatic cells used in various
portable electronic applications
CIRCUIT PROTECTION /// MHP-TAM DEVICES
MHP-TAM DEVICES
Overtemperature Protection
The rapidly expanding market for ultra-thin portable electronic devices such as media
tablets and ultra-thin PCs has created demand for very thin, low-profile, light-weight and
high-capacity Lithium Polymer (LiP) and prismatic cells.
A new MHP (Metal Hybrid PPTC) device, the MHP-TAM, offers a 9VDC rating and a higher
current rating than typical battery strap devices to meet the battery safety requirements
of higher-capacity LiP and prismatic batteries found in the latest tablet and ultra-thin
computing products. Hybrid MHP technology connects a bimetal protector in parallel
with a PPTC (polymeric positive temperature coefficient) device. The resulting MHP-TAM
device helps provide resettable overtemperature protection, while utilizing the PPTC
device to act as a heater and to help keep the bimetal latched until the fault is removed.
Benefits
• Capable of handling voltages and battery charge rates found in high-capacity LiP and
prismatic cells used in cutting-edge applications
• Helps provide resettable and accurate overtemperature protection
• Compact size and thin form factor facilitates circuit protection in ultra-thin battery
pack designs
• Customization of welding leads available to facilitate design
Features
• Two levels of hold current:
- Low current (nominal 6A hold current @25°C)
- High current (nominal 15A hold current @25°C)
• Multiple temperature ratings
- (72°C, 77°C, 82°C, 85°C, 90°C)
• Compact size (L:5.8mm x W:3.85mm x H:1.15mm)
Applications
• Battery cell protection for high-capacity Lithium Polymer and prismatic cells used in:
- Notebook PCs
- Ultra-book
- Tablets
- Smart phones
CIRCUIT PROTECTION /// MHP-TAM DEVICES
PAGE 2
MHP-TAM Devices
Design Concept
In normal operation, current passes through the bimetal contact due to its low contact resistance. During an abnormal event,
the device reacts to the rise in cell temperature causing the bimetal contact to open at the specified temperature and its
contact resistance to increase.
At this point, the current shunts to the lower resistance PPTC which acts as a heater and helps keep the bimetal protector
open and in a latched position until the fault is removed.
Rc
Rptc
Leakage current
Electrical Characteristics (Typical)
Series
Model Number
Rating
[°C]
Nominal
Operation
Temperature
[°C]
Reset
Temperature
[°C]
Reference
Resistance
[mohms] 25°C
Min
Max
Min
T
Typ
Max
MHP-TAM6 Series
Typical Electrical Rating
(25°C)
MHP-TAM6-9-72
72
67
77
≥40
≥7
10
15
Max. Breaking Current
5VDC/40A (100 cycles)
MHP-TAM6-9-77
77
72
82
≥40
≥10
10
15
MHP-TAM6-9-82
82
77
87
≥40
≥10
10
15
MHP-TAM6-9-85
85
80
90
≥40
≥10
10
15
MHP-TAM15-9-72
72
67
77
≥40
*≥7
2.5
5
MHP-TAM15-9-77
77
72
82
≥40
*≥10
2.5
5
MHP-TAM15-9-82
82
77
87
≥40
*≥10
2.5
5
MHP-TAM15-9-85
85
80
90
≥40
*≥10
2.5
5
MHP-TAM15-9-90
90
85
95
≥40
*≥10
2.5
5
Contact Rating
9VDC/12A (6000 cycles)
MHP-TAM15 Series
Typical Electrical Rating
(25°C)
Max. Breaking Current
5VDC/80A (100 cycles)
Contact Rating
9VDC/25A (6000 cycles)
* The minimum temperature differential between the actual operation temperature of the device and the reset temperature
CIRCUIT PROTECTION /// MHP-TAM DEVICES
PAGE 3
MHP-TAM Devices
Hold Current vs. Temperature Curves
10
MHP-TAM6 Series
9
A - MHP-TAM6-9-72
8
B - MHP-TAM6-9-77
Current (A)
7
6
C - MHP-TAM6-9-82
D
5
4
D - MHP-TAM6-9-85
C
A
B
3
2
1
0
20
30
40
50
60
70
80
Temperature (°C)
22
MHP-TAM15 Series
20
18
A - MHP-TAM15-9-72
16
B - MHP-TAM15-9-77
Current (A)
14
C - MHP-TAM15-9-82
12
10
8
A
6
E
D
D - MHP-TAM15-9-85
C
E - MHP-TAM15-9-90
B
4
2
0
20
30
40
50
60
70
80
Temperature (°C)
Dimensions In Millimeters
MHP-TAM6 and MHP-TAM15 Series:
A
D
E
5.8
4-ø0.4
2.5 1.2
1.2 2.5
0.7
0.7
0.1
B
11.4
B
-
1.15
C
3.75
3.85
D
2.6
2.8
E
2.6
2.8
0.1
(0.2)
Unless otherwise specified, all tolerances are 0.1mm.
(0.2)
B
A
C
CIRCUIT PROTECTION /// MHP-TAM DEVICES
1.2
Max
10.9
C
0.100.01
0.100.01
Min
A
PAGE 4
D
E
MHP-TAM Devices
Packaging and Marking Information
Bag
Quantity
Standard Package
Part Marking
MHP-TAM6 Series
1,000
20,000
Lot ID#, Control# & Co. Logo, Product #
MHP-TAM15 Series
1,000
20,000
Lot ID#, Control# & Co. Logo, Product #
Part Number
Agency Recognition
Part Number
Agency Recognition
MHP-TAM6 Series
UL & cUL File No. E349829;
CB File No. US-23966-M1-UL
MHP-TAM15 Series
UL & cUL File No. E349829;
CB File No. US-24160-UL
Part Numbering System
MHP TAM 15
9 72
Nominal Activation Temperature
Contact Voltage Rating
Nominal Hold Current at Room Temperature
Product Group
Series Name
Physical Characteristics
Terminals Copper Alloy
Molding Plastic LCP (Liquid Crystal Polymer)
RoHS and Halogen-free Compliance
RoHS Compliant
Halogen Free per IEC 61249-2-21
CIRCUIT PROTECTION /// MHP-TAM DEVICES
PAGE 5
For More Information
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1-1773851-8 06/2015
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