CM
376
CM-RELAYS
AUTOMOTIVE MICRO-ISO
RELAY
mm inch
15
.591
22
.866
20
.787
FEATURES
• Small size: 20 mm(L)
×
15 mm(W)
×
22 mm(H)
.787 inch(L)
×
.591 inch(L)
×
.866 inch(H)
• Wide line-up
PC board and Plug-in type, Resistor and diode inside type
• 35 Amp contact Rating, 100,000 Operations (12V type)
• Micro-ISO type terminals
SPECIFICATIONS
Contact
Coil
Characteristics
Type 12 V coil voltage 24 V coil voltage
Arrngement 1 Form A, 1 Form C
Contact material Silver alloy
Initial contact resistance,
max. 15m
Ω
Contact voltage drop, max. N.O.: 0.5 V
(at 35 A 14 V DC)
N.C.: 0.3 V
(at 20 A 14 V DC)
N.O.: 0.3 V
(at 15 A 28 V DC)
N.C.: 0.2 V
(at 8 A 28 V DC)
Rating
(resistive
load)
Nominal
switching
capacity N.O .: 35 A 14 V DC
N.C.: 20 A 14 V DC N.O .: 15 A 28 V DC
N.C.: 8 A 28 V DC
Max. switching
current
N.O.: 20 A
(14 V DC,
at 85
°
C 185
°
F)
N.C.: 10 A
(14 V DC,
at 85
°
C 185
°
F)
N.O.: 15 A
(28 V DC,
at 85
°
C 185
°
F)
N.C.: 8 A
(14 V DC,
at 85
°
C 185
°
F)
Expected
life
Mechanical
(at 120 cpm) Min. 10
6
Electrical
(at rated load) Flux-resistant type: Min. 10
5
*
1
Sealed type: Min. 5
×
10
4
Nominal operating power 1.5 W
1.7 W
(Internal resistor
type)
1.8 W
2.0 W
(Internal resistor
type)
Type 24V coil type 12V coil type
Max. operating speed
(at nominal switching capacity) 15 cpm
Initial insulation resistance*
2
Min. 20 M
Ω
(at 500 V DC)
Initial breakdown
voltage*
3
Between open
contacts 500 Vrms for 1 min.
Between contacts
and coil 500 Vrms for 1 min.
Operate time*
4
(at nominal voltage) (at 20
°
C 85
°
F)Max. 10 ms
Release time*
4
(at nominal voltage) (at 20
°
C 85
°
F)Max. 10 ms
Max. 15 ms (with diode)
Shock resistance Functional*
5
Min. 200 m/s
2
{20G}
Destructive*
6
Min. 1,000m/s
2
{100G}
Vibration
resistance
Functional*
7
10 to 500 Hz,
Min. 44.1 m/s
2
{4.5 G}
Destructive*
8
10 to 2,000 Hz,
Min. 44.1 m/s
2
{4.5 G}
Conditions for
operation, trans-
port and storage*
9
(Not freezing and
condensing at low
temperature)
Ambient temp. –40
°
C to + 85
°
C
–40
°
F to + 185
°
F
Humidity 25 to 85% R.H.
Unit weight Approx. 20g .71oz
Remarks
* Specifications will vary with foreigh standards certification ratings.
*
1
At nominal switching capacity, operating frequency: 2s ON, 2s OFF
*
2
Measurement at same location as "Initial breakdown voltage" section.
*
3
Detection current: 10mA
*
4
Excluding contact bounce time.
*
5
Half-wave pulse of sine wave: 11 ms; detection time: 10
µ
s
*
6
Half-wave pulse of sine wave: 6 ms
*
7
Detection time: 10
µ
s
*
8
Time of vibration for each direction; X, Y, Z direction: 4 hours
*
9
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
XY
Z
TYPICAL APPLICATIONS
Automotive system
Fan motor, Heater, Tail lump, Air Compressor
CM
377
ORDERING INFORMATION
CM
Contact arrangement
1a: 1 Form A
1: 1 Form C Nil: Sealed type
F: Flux-resistant type Nil: Standard type
D: with diode inside
R: with resistor iside
Nil: Quick connect type
P: PC board type 12 V
24 V
Protective construction Classification of types Mounting classification Coil voltage (DC)
1 F R P 12V
Note: Bulk package: 50 pcs.; Case: 200 pcs.
TYPES
Packing quantity: Inner 50pcs, Outer 200pcs.
COIL DATA
(at 20
°
C 68
°
F)
Contact arrangement Part No. Coil voltage Mounting classification Protective construction
1 Form A
CM1a-12V
12 V DC
Quick connect type Sealed type
CM1aF-12V Flux-resistant type
CM1a-P-12V PC board type Sealed type
CM1aF-P-12V Flux-resistant type
1 Form C
CM1-12V Quick connect type Sealed type
CM1F-12V Flux-resistant type
CM1-P-12V PC board type Sealed type
CM1F-P-12V Flux-resistant type
Contact arrangement Part No. Coil voltage Mounting classification Protective construction
1 Form A
CM1a-24V
24 V DC
Quick connect type Sealed type
CM1aF-24V Flux-resistant type
CM1a-P-24V PC board type Sealed type
CM1aF-P-24V Flux-resistant type
1 Form C
CM1-24V Quick connect type Sealed type
CM1F-24V Flux-resistant type
CM1-P-24V PC board type Sealed type
CM1F-P-24V Flux-resistant type
Nominal voltage,
V DC Pick-up voltage,
V DC (max.) Drop-out voltege,
V DC (min.) Nominal current,
mA (
±
10%) Coil resistance,
ohm (
±
10%) Nominal operating
power, W Usable voltage
range, V DC
12 3 to 7 1.2 to 4.2 125 96 1.5 10 to 16
24 6 to 14 2.4 to 8.4 75 320 1.8 20 to 32
DIMENSIONS
Quick connect type
3.25
.128
4.8
.189 0.8
.031 0.8
.031
4.25
.167
6.3
.248
20.0
.787
3-1.5 dia.
3-.059 dia. 2-1.75 dia.
2-.069 dia.
Sealed by epoxy resin
15.0
.591
22.0
.866
11.0
.433
87a
86
85
87
30
9.0
.354
8.0
.315
14.0
.551
2.1
.083
Schematic (Bottom view)
85
87a*
86
87
*Not used on 1 Form A type
Relay coil
Resistor if used.
30
PC board type
4.8
.189
0.8
.031 0.8
.031
2.1
.083
Soldering depth
Max.
1.2
.047 3.5
.138
2.5
.098
1.0
.039
20.0
.787
Sealed by epoxy resin
23.0
.906
87a
86
85
87
30
9.0
.354
8.0
.315
15.0
.591
2.1
.083
6.3
.248
15.0
.591
A*
Schematic (Bottom view)
85
87a*
86
87
*Not used on 1 Form A type
Relay coil
Resistor if used.
30
PC board pattern (Bottom view)
15±0.05
.591±.002
9±0.05
.354±.002
4.5±0.05
.177±.002
8±0.05
.315±.002
1.4+0.1
0
.055+.004
0
2.4+0.1
0
.094+.004
0
1.4+0.1
0
.055+.004
0
1.4+0.1
.055+.004
.055+.004
0
1.4+0.1
0
.106+.004
0
2.7+0.1
0
Dimension: General tolerance
Max. 1mm .039 inch:
±
0.1
±
.004
1 to 3mm .039 to .118 inch:
±
0.2
±
.008
Min. 3mm .118 inch:
±
0.3
±
.012
* Dimensions (thickness and width) of terminal specified in this catalog is measured before pre-soldering.
Intervals between terminals is measured at A surface level.
mm inch
CM
378
REFERENCE DATA
1-(1). Coil temperature rise (12V type)
Tested sample: CM1F-12V, 3 pcs.
Ambient temperature: 85
°
C 185
°
F
Contact carrying current: 20 A, 35 A
1-(2). Coil temperature rise (24V type)
Tested sample: CM1F-24V, 4 pcs.
Ambient temperature: 85
°
C 185
°
F
Contact carrying current: 0 A, 15 A
2-(1). Electrical life test (resistive load)
Tested sample: CM1F-12V, 6 pcs.
Load: N.C.: 20A 14V DC
N.O.: 35A 14V DC
Operate frequency: ON 2s, OFF 2s
12 14 16
120
100
80
60
40
20
0
35A
20A
Coil applied voltage, V
Temperature rise, °C
24 28 32
120
100
80
60
40
20
0
15A
0A
Coil applied voltage, V
Temperature rise, °C
010
10
4
6
8
2
0
Pick-up voltage
Drop-out voltage
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations, ×104
Contact welding: 0 times
Miscontact: 0 times
2-(2). Electrical life test (Lamp load)
Tested sample: CM1aF-R-12V, 6 pcs.
Load: 20A 13.5V DC
Operate frequency: ON 1s, OFF 14s
Circuit:
Sample
Halogen lamp
100
0
10
8
6
4
2
Pick-up voltage
Drop-out voltage
Max.
Max.
Min.
Min.
x
–
x
–
Pick-up and drop-out voltage, V
No. of operations, ×104
Contact welding: 0 times
Miscontact: 0 times
For Cautions for use, see Relay Technical Information (Page 48 to 76).
9/1/2000 All Rights Reserved, © Copyright Matsushita Electric Works, Ltd.
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