JJ-M(2w)
DOUBLE MAKE CONTACT
AUTOMOTIVE RELAY
JJ-M RELAYS (AJJM)
(Double make type)
FEATURES
• Small size
The smallest double make type relay
12.0(W)15.5(L)13.9(H) mm
.472(W).610(L).547(H) inch
• Pattern design simplification
Simplified pattern design is possible
because, while double make construction
is employed, the external COM terminal
is single.
• Standard terminal pitch employed
The terminal array used is identical to
that used in JJM relays(1c type).
• Plastic sealed type
Plastically sealed for automotive
cleaning.
TYPICAL APPLICATIONS
Car alarm system flashing lamp etc.
TYPES
Contact arrangement
Coil voltage
Part No.
Double make contact
12 V DC
AJJM831
Standard packing; Carton (tube): 50 pcs.; Case: 1,000 pcs.
RATING
1. Coil data
Nominal coil
voltage
Pick-up voltage
(at 20C 68F)
Drop-out voltage
(at 20C 68F)
Nominal operating
current
[10%] (at 20C 68F)
Coil resistance
[10%] (at 20C 68F)
Nominal operating
power
(at 20C 68F)
Usable voltage range
12V DC
Max. 6.9 V DC
(Initial)
Min. 1.0V DC
(Initial)
83.3 mA
144
1,000 mW
10 to 16V DC
Note: Other pick-up voltage types are also available. Please contact us for details.
2. Specifications
Characteristics
Item
Arrangement
Contact
Rating
Contact resistance (Initial)
Typ10m (By voltage drop 6V DC 1A)
Contact material
Ag alloy (Cadmium free)
Nominal switching capacity (lamp load)
12A 14V DC (at 2  6A)
Max. carrying current (12V DC)*3
2  6 A at 20C 68F, 2  4 A at 85C 185F
Nominal operating power
1,000 mW
Min. switching capacity (resistive load)*1
1A 12V DC
Insulation resistance (Initial)
Electrical
characteristics
Breakdown voltage
(Initial)
Between open contacts
Between contacts and coil
Operate time (at nominal voltage)
Release time (at nominal voltage)
Shock resistance
Mechanical
characteristics
Vibration resistance
Expected life
Conditions
Specifications
Double make contact
Functional
Min. 100 M (at 500V DC)
500 Vrms for 1 min. (Detection current: 10mA)
500 Vrms for 1 min. (Detection current: 10mA)
Max. 10ms (at 20C 68F, excluding contact bounce time) (Initial)
Max. 10ms (at 20C 68F, excluding contact bounce time) (Initial)
Min. 100 m/s2 {10G} (Half-wave pulse of sine wave: 11ms; detection time: 10s)
Destructive
Min. 1,000 m/s2 {100G} (Half-wave pulse of sine wave: 6ms)
Functional
10 Hz to 100 Hz, Min. 44.1 m/s2 {4.5G} (Detection time: 10s)
Destructive
10 Hz to 500 Hz, Min. 44.1 m/s2 {4.5G},
Time of vibration for each direction; X, Y direction: 2 hours, Z direction: 4 hours
Mechanical
Min. 107 (at 120 cpm)
Electrical
<Lamp load>
Min. 105 [21W  6 lamps (2  3 lamps) at 14 V DC, operating frequency: 1s ON, 14s OFF]
Conditions for operation, transport and storage*2
Ambient temperature: –40C to +85C –40F to +185F,
Humidity: 5% R.H. to 85% R.H. (Not freezing and condensing at low temperature),
Air pressure: 86k Pa to 106k Pa
Mass
Approx. 5g .176 oz
Notes:
*1. This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the actual load.
*2. The upper operation ambient temperature limit is the maximum temperature that can satisfy the coil temperature rise value. Refer to “6. Usage, Storage and Transport
Conditions“ in AMBIENT ENVIRONMENT section in Relay Technical Information.
Please inquire if you will be using the relay in a high temperature atmosphere (110C 230F).
*3. Depends on connection conditions. Also, this does not guarantee repeated switching. We recommend that you confirm operation under actual conditions.
ds_61210_en_jjmdm: 010113J
1
JJ-M(2w)
REFERENCE DATA
1. Coil temperature rise
Sample: AJJM831, 6pcs.
Point measured: Inside the coil
Contact carrying current: 2  6A, 2  4A
Ambient temperature: Room temperature, 85C
185F
2. Ambient temperature and operating voltage
range
100
8A(2 x 4A),
85°C 185°F
80
60
40
70
35
30
25
20
10
5
14
Pick-up voltage (cold start)
0
−40 −20
16
Coil applied voltage, V
0
Sample: AJJM831, 50pcs.
* Without diode
60
60
50
50
Quantity, n
40
40
30
30
20
20
10
10
0
0.5
1.0
1.5
2.0
2.5
3.0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
Voltage, V
0
3.5
0
0.5
1.0
1.5
Time, ms
2.0
2.5
3.0
3.5
Time, ms
Change of pick-up and drop-out voltage
Sample: AJJM831, 6pcs.
Load: 6  21W, inrush 48A, steady 5.5A
Operating frequency: (ON 1s, OFF 14s)
Ambient temperature: Room temperature
Circuit:
Tested sample
10
Pick-up and drop-out voltage, V
6. Electrical life test (Lamp load)
50
Contact welding: 0 time
Miscontact: 0 time
8
6
Pick-up voltage
Max.
X
Min.
4
Drop-out voltage
Max.
X
Min.
2
0
5
No. of operations, × 10
Load current waveform
Change of contact resistance
10
4
Contact resistance, mΩ
Quantity, n
5. Distribution of release time
Sample: AJJM831, 50pcs.
70
0
20 40 60 8085 100 120
Ambient temperature, °C
4. Distribution of operate time
70
40
20
10
12
50
30
15
20
Pick-up voltage
Drop-out voltage
60
Quantity, n
Coil applied voltage, VDC
Temperature rise, °C
12A(2 x 6A),
Room temperature
120
0
Sample: AJJM831, 50pcs.
40
140
0
3. Distribution of pick-up and drop-out voltage
40
30
20
10
0
Max.
X
Min.
0
5
10
No. of operations, × 104
Current value per contact on one side
Inrush current: 48A, Steady current: 5.5A
10A
200ms
2
ds_61210_en_jjmdm: 010113J
JJ-M(2w)
DIMENSIONS (mm inch)
CAD Data
Data from our Web site.
Download CAD
External dimensions
CAD Data
15.5
.610
13.9
.547 0.4
.016
PC board pattern (Bottom view)
4-1.4 dia.
4-.055 dia.
12.0
.472
Max. 1.0
Max. .039
3.5
.138
2.5
.098
10.2
.402
A*
Tolerance: 0.1 .004
Pre-soldering
2-0.3
2-.012
2-0.4
2-.016
10.0
.394
1.5 dia.
.059 dia.
Schematic (Bottom view)
N.O.
10.0
.394
COM
1.2
.047
2.5
.098
COIL
0.3
.012
10.2
.402
4-1.0
4-.039
1.6±0.3
.063±.012
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
N.O.
General tolerance
0.1 .004
0.2 .008
0.3 .012
* Dimensions (thickness and width) of terminal in this catalog is measured before pre-soldering.
Intervals between terminals is measured at A surface level.
EXAMPLE OF CIRCUIT
Control circuit for turn signal lights (security system)
Flasher Relay
JJ-M relay
Double make type
Turn signal SW
L
L
Left
L
L
L
L
Turn signal lamp
Right
For Cautions for Use, see Relay Technical Information.
ds_61210_en_jjmdm: 010113J
3