CB
MINI-ISO
AUTOMOTIVE RELAY
CB RELAYS
FEATURES
TYPICAL APPLICATIONS
• This relay has an Mini-ISO
(International Organization for
Standardization) terminal
arrangement.
• Relay is compact and high capacity
(40 A).
Compact form factor realized with space
saving 22 26 mm .866 1.024 inch
small base area thanks to integrated
bobbin and base construction. Features
high switching capacity of 40 A
• Features high thermal resistance of
125C 257F (heat resistant type).
Heat resistant type is available that can
withstand use near engines. (40 A
switching capacity)
• Built-in resistor type is also
available.
• Automobiles
Headlights, Cell motors, Air conditioners,
ABS, EPS, etc.
• Construction equipment
• Agricultural equipment, Conveyor,
etc.
ORDERING INFORMATION
CB
Contact arrangement
1a: 1 Form A
1: 1 Form C
Contact rating
Nil: Standard type
H: High contact capacity type
Protective construction
Nil: Sealed type
F: Flux-resistant type
Heat resistant of types
Nil: Standard type
T: Heat resistant type
Protective element
Nil: None
R: with resistor inside
Mounting classification
Nil: Plug-in type
P: PC board type
M: Bracket type
Coil voltage (DC)
12V, 24 V
ds_61202_en_cb: 010113J
1
CB
TYPES
1. Standard type
Contact arrangement
Mounting classification
PC board type
1 Form A
Plug-in type
Bracket type
PC board type
1 Form C
Plug-in type
Bracket type
PC board type*
High contact capacity
(1 Form A)
Plug-in type
Bracket type
Sealed type
Nominal coil voltage
Flux-resistant type
Part No.
Part No.
12V DC
CB1a-P-12V
CB1aF-P-12V
24V DC
CB1a-P-24V
CB1aF-P-24V
12V DC
CB1a-12V
CB1aF-12V
24V DC
CB1a-24V
CB1aF-24V
12V DC
CB1a-M-12V
CB1aF-M-12V
24V DC
CB1a-M-24V
CB1aF-M-24V
12V DC
CB1-P-12V
CB1F-P-12V
24V DC
CB1-P-24V
CB1F-P-24V
12V DC
CB1-12V
CB1F-12V
24V DC
CB1-24V
CB1F-24V
12V DC
CB1-M-12V
CB1F-M-12V
24V DC
CB1-M-24V
CB1F-M-24V
12V DC
CB1aH-P-12V
CB1aHF-P-12V
24V DC
CB1aH-P-24V
CB1aHF-P-24V
12V DC
CB1aH-12V
CB1aHF-12V
24V DC
CB1aH-24V
CB1aHF-24V
12V DC
CB1aH-M-12V
CB1aHF-M-12V
24V DC
CB1aH-M-24V
CB1aHF-M-24V
Standard packing; Carton: 50 pcs. Case: 200 pcs.
Note: Please use “CBR” to order with resistor inside type. (Asterisks “” should be filled in from ORDERING INFORMATION.)
2. Heat resistant type
Contact arrangement
Mounting classification
PC board type
1 Form A
Plug-in type
Bracket type
PC board type
1 Form C
Plug-in type
Bracket type
PC board type*
High contact capacity
(1 Form A)
Plug-in type
Bracket type
Sealed type
Nominal coil voltage
Flux-resistant type
Part No.
12V DC
Part No.
CB1a-T-P-12V
CB1aF-T-P-12V
24V DC
CB1a-T-P-24V
CB1aF-T-P-24V
12V DC
CB1a-T-12V
CB1aF-T-12V
24V DC
CB1a-T-24V
CB1aF-T-24V
12V DC
CB1a-T-M-12V
CB1aF-T-M-12V
24V DC
CB1a-T-M-24V
CB1aF-T-M-24V
12V DC
CB1-T-P-12V
CB1F-T-P-12V
24V DC
CB1-T-P-24V
CB1F-T-P-24V
12V DC
CB1-T-12V
CB1F-T-12V
24V DC
CB1-T-24V
CB1F-T-24V
12V DC
CB1-T-M-12V
CB1F-T-M-12V
24V DC
CB1-T-M-24V
CB1F-T-M-24V
12V DC
CB1aH-T-P-12V
CB1aHF-T-P-12V
24V DC
CB1aH-T-P-24V
CB1aHF-T-P-24V
12V DC
CB1aH-T-12V
CB1aHF-T-12V
24V DC
CB1aH-T-24V
CB1aHF-T-24V
12V DC
CB1aH-T-M-12V
CB1aHF-T-M-12V
24V DC
CB1aH-T-M-24V
CB1aHF-T-M-24V
Standard packing; Carton: 50 pcs. Case: 200 pcs.
Note: Please use “CBR” to order with resistor inside type. (Asterisks “” should be filled in from ORDERING INFORMATION.)
RATING
1. Coil data
1) No protective element
Contact
arrangement
Nominal coil
voltage
1 Form A,
1 Form C
12V DC
24V DC
High contact
capacity
(1 Form A)
Drop-out voltage
Nominal operating
current
3 to 7V DC
1.2 to 4.2V DC
6 to 14V DC
2.4 to 8.4V DC
Pick-up voltage
12V DC
3 to 7V DC
1.2 to 4.2V DC
24V DC
6 to 14V DC
2.4 to 8.4V DC
Coil resistance
Nominal operating
power
Usable voltage
range
117mA
103
1.4W
10 to 16V DC
75mA
320
1.8W
20 to 32V DC
117mA
103
1.4W (PC board type)
150mA
80
1.8W
58mA
411
1.4W (PC board type)
75mA
320
1.8W
Drop-out voltage
(Initial, at 20C 68F)
Nominal operating
current
(at 20C 68F)
Combined resistance
(10%)
(at 20C 68F)
Nominal operating
power
(at 20C 68F)
10 to 16V DC
20 to 32V DC
Note: Other pick-up voltage types are also available. Please contact us for details.
2) With resistor inside
2
Contact
arrangement
Nominal coil
voltage
Pick-up voltage
(Initial, at 20C 68F)
1 Form A,
1 Form C
12V DC
3 to 7V DC
1.2 to 4.2V DC
134mA
89.5
1.6W
10 to 16V DC
24V DC
6 to 14V DC
2.4 to 8.4V DC
84mA
287.2
2.0W
20 to 32V DC
Usable voltage
range
ds_61202_en_cb: 010113J
CB
2. Specifications
1) Standard type (12 V coil voltage)
Characteristics
Item
Specification
Arrangement
Contact
1 Form A
Contact resistance (Initial)
Typ2m (By voltage drop 6 V DC 1 A)
Contact material
Ag alloy (Cadmium free)
Nominal switching capacity (Initial)
Rating
Max. carrying current (Initial)
(14V DC, at 85C 185F, continuous)
Nominal operating power
40A 14V DC
N.O.: 40A 14V DC
N.C.: 30A 14V DC
N.O.: 40A
N.O.: 40A, N.C.: 30A
N.O.: 40A
1.4W
1.4W
1.8W (1.4W: PC board type)
Min. switching capacity (resistive load)*1
Insulation resistance (Initial)
Electrical
characteristics
Breakdown
voltage (Initial)
Expected life
Conditions
70A 14V DC (at 20C 68F)
50A 14V DC (at 85C 185F)
1A 14V DC
Min. 20 M (at 500V DC, Measurement at same location as “Breakdown voltage” section.)
Between open contacts
500 Vrms for 1 min. (Detection current: 10mA)
Between contacts and coil
500 Vrms for 1 min. (Detection current: 10mA)
Operate time (at nominal coil voltage)
(at 20C 68F)
Max. 15ms (excluding contact bounce time) (Initial)
Release time (at nominal coil voltage)
(at 20C 68F)
Max. 15ms (excluding contact bounce time) (Initial)
Shock resistance
Mechanical
characteristics
High contact capacity
(1 Form A)
1 Form C
Vibration
resistance
Functional
Min. 200 m/s2 {20G}
Destructive
Min. 1,000 m/s2 {100G}
Functional
10 Hz to 500 Hz, Min. 44.1m/s2 {4.5G}
Destructive
10 Hz to 2,000 Hz, Min. 44.1m/s2 {4.5G} Time of vibration for each direction; X. Y. Z direction: 4 hours
Electrical (at nominal switching capacity)
Flux-resistant type: Min. 105, Sealed type: Min. 5104 (Operating frequency: 2s ON, 2s OFF)
Mechanical
Min. 106 (at 120 cpm)
Standard type; Ambient temperature: –40 to +85C –40 to +185F,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Conditions for operation, transport and
storage*2
Heat resistant type; Ambient temperature: –40 to +125C –40 to +257F,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Max. operating speed
15 cpm (at nominal switching capacity)
Mass
Approx. 33 g 1.16 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.
2) Standard type (24 V coil voltage)
Characteristics
Item
Specifications
Arrangement
Contact
1 Form A
Contact resistance (Initial)
Max. 15m (By voltage drop 6 V DC 1 A)
Contact material
Ag alloy (Cadmium free)
20A 28V DC
N.O.: 20A 28V DC
N.C.: 10A 28V DC
20A 28V DC
Max. carrying current (Initial)
(28V DC, at 85C 185F, continuous)
20A
N.O.: 20A, N.C.: 10A
20A
Nominal operating power
1.8W
1.8W
1.8W, 1.4W (PC board type)
Nominal switching capacity (Initial)
Rating
High contact capacity
(1 Form A)
1 Form C
Note: All other specifications are the same as those of standard type (12 V coil voltage)
3) Heat resistant type (12 V and 24 V coil voltage)
Characteristics
Specifications
Item
Arrangement
12V
1 Form A
1 Form C
Contact
Contact resistance (Initial)
24V
High contact
capacity
(1 Form A)
20A 28V DC
N.O.: 20A 28V DC
N.C.: 10A 28V DC
20A 28V DC
25A 28V DC
N.O.: 25A 28V DC
N.C.: 10A 28V DC
25A 28V DC
1.8W
1.8W
1.8W,
1.4W
(PC board type)
Ag alloy (Cadmium free)
Nominal switching capacity
(Initial)
40A 14V DC
N.O.: 40A 14V DC
N.C.: 30A 14V DC
Max. carrying current (Initial)
(at 85C 185F, continuous)*
50A 14V DC
N.O.: 50A 14V DC
45A
50A
N.C.: 30A 14V DC 14V DC 14V DC
Nominal operating power
High contact
capacity
(1 Form A)
Max. 15m (By voltage drop 6 V DC 1 A)
Contact material
Rating
1 Form C
1 Form A
1.4W
1.4W
40A 14V DC
1.8W
1.4W
(PC
board
type)
Notes: 1. All other specifications are the same as those of standard type (12 V coil voltage)
2. *Current value in which carry current is possible when the coil temperature is 180C 356F
ds_61202_en_cb: 010113J
3
CB
REFERENCE DATA
CB RELAYS (Standard type)
1. Allowable ambient temperature
2. Max. switching capability (Resistive load)
(Heat resistant standard type)
(Standard type)
3. Ambient temperature and operating voltage
range
(N.O. side Room temperature)
120
20A
100
30A
80
40A
60
40
Coil applied voltage, VDC
60
Switching voltage, VDC
Maximum allowable ambient temperature, °C
(Standard type)
150
140
50
40
30
20
105 cycle line
40
20
90
35
30
25
20
10
10
100
110 120 130 140
Applied coil voltage, %V
150
0
5
Actual value
(Max. 105 cycle)
0
10
Operating voltage range
15
20
30
40
Switching current, A
0
–40 –20
50
Pick-up voltage
(Cold start)
0
20 40 60 8085 100 120
Ambient temperature, °C
Assumption:
• Maximum mean coil temperature: 180C
• Curves are based on 1.4W (Nominal power consumption of the unsupprressed coil at nominal voltage)
4. Distribution of pick-up and drop-out voltage
5. Distribution of operate and release time
Sample: CB1-P-12V, 42pcs.
Sample: CB1-P-12V, 42pcs.
60
60
40
30
40
30
20
20
10
10
0
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
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Voltage, V
Operate and release time, ms
Change of pick-up and drop-out voltage
6. Electrical life test (Motor free)
Sample: CB1F-12V, 5pcs.
Load: 25A 14V DC, motor free actual load
Operating frequency: ON 1s, OFF 9s
Ambient temperature: Room temperature
Relay harness
Motor
5
Pick-up voltage
Load current waveform
Max.
X
Min.
4
3
Drop-out voltage
2
Max.
X
Min.
40
3
20
10
1
0
Observation of load waveform
with current probe and digital
oscilloscope
50
Contact resistance, mΩ
Pick-up and drop-out voltage, V
Tested sample
M
Change of contact resistance
6
Circuit
14V DC
Operate time
Release time
50
Quantity, n
Quantity, n
50
Pick-up voltage
Drop-out voltage
0
0
5
No. of operations, x 104
10
0
5
Max.
X
Min.
10
No. of operations, x 104
Inrush current: 80A, Steady current: 25A
20A
200ms
4
ds_61202_en_cb: 010113J
CB
CB RELAYS (High contact capacity type)
1. Allowable ambient temperature
2. Ambient temperature and operating voltage
range
(High resistant/high contact capacity type)
3. Distribution of pick-up and drop-out voltage
Sample: CB1aHF-12V, 53pcs.
120
30A
100
40A
80
50A
60
70
35
60
30
50
25
20
100
110 120 130 140
Applied coil voltage, %V
40
30
20
10
5
70A
20
90
Operating voltage range
Pick-up voltage
Drop-out voltage
15
60A
40
40
Quantity, n
150
140
Coil applied voltage, VDC
Maximum allowable ambient temperature, °C
(High contact capacity/standard type)
0
−40 −20
150
10
Pick-up voltage
(Cold start)
0
20 40 60 80 85 100 120
Ambient temperature, °C
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
Voltage, V
Assumption:
• Maximum mean coil temperature: 180C
• Curves are based on 1.4W (Nominal power consumption of the unsupprressed coil at nominal voltage)
4. Distribution of operate and release time
5. Contact resistance
Sample: CB1aHF-12V, 53pcs.
Sample: CB1aHF-12V, 53pcs.
(By voltage drop 6V DC 1A)
70
10
60
Operate time
Quantity, n
8
6
50
40
30
4
20
Release time
2
0
10
8
10
12
0
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8
14
Resistance, mΩ
Coil voltage, V
Change of pick-up and drop-out voltage
Sample: CB1aH-12V, 3pcs.
Load: Inrush current: 64A/Steady current: 35A
Fan motor actual load (motor free) 12V DC
Operating frequency: ON 3s, OFF 7s
Ambient temperature: Room temperature
Circuit
3s
7s
10s
Change of contact resistance
50
10
Pick-up and drop-out voltage, V
6. Electrical life test (Motor free)
9
8
7
6
Pick-up voltage
5
Max.
X
Min.
4
Drop-out voltage
3
Max.
X
Min.
2
1
0
0
5
No. of operations, x 10
10
4
Contact resistance, mΩ
Operate and release time, ms
12
40
30
20
Max.
10
X
Min.
0
0
5
10
No. of operations, x 104
M
Load current waveform
Inrush current: 64A, Steady current: 35A
10A
500ms
ds_61202_en_cb: 010113J
5
CB
DIMENSIONS (mm inch)
CAD Data
Data from our Web site.
Download CAD
1. PC board type
External dimensions
CAD Data
Schematic (Bottom view)
1 Form A
86
25.0
.984
30
87
85
4.5
.177
Including resistor type also available
1.0
.039
2.15
6.3 .085
.248
26.0
1.024
22.0
.866
1 Form C
86
30
87a
87
85
86
0.8
.031
8.4
.331
16.8
.661
87a
30
Including resistor type also available
PC board pattern (Bottom view)
87
85
8
.315
8.4
17.9 .331
.705
2.6
.102
4(or5)x2.6
4(or5)x.102
1 Form C type only
86
8.4
.331
87a
30
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
General tolerance
0.1 .004
0.2 .008
0.3 .012
4(or5)x1.4
4(or5)x.055
87
16.8
.661
85
8.0
.315
8.4
.331
17.9
.705
1 Form C type only
Tolerance: 0.1 .004
2. Plug-in type
CAD Data
External dimensions
Schematic (Bottom view)
1 Form A
86
25.0
.984
30
87
85
4.0
11.0.157
.433
Including resistor type also available
5x6.3
5x.248
26.0
1.024
1.7 dia.
.067 dia.
22.0
.866
0.8
.031
87a
87
Including resistor type also available
87
8
.315
8.4
.331
17.9
.705
16.8
.661
2.6
.102
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
6
85
87a
30
85
86
30
8.4
.331
86
1 Form C
General tolerance
0.1 .004
0.2 .008
0.3 .012
ds_61202_en_cb: 010113J
CB
3. Bracket type
External dimensions
CAD Data
16.0
.630
5.4±0.1 dia.
.213±.004
Schematic (Bottom view)
1 Form A
4.0±0.1
.157±.004
1.7
.067
86
30
6.0 16.0
.236 .630
87
85
Including resistor type also available
1 Form C
25.0
.984
86
30
4.0
11.0.157
.433
85
5x6.3
5x.248
26.0
1.024
22.0
.866
87a
87
Including resistor type also available
0.8
.031
30
86
85
87a*
17.9
.705
8.4
.331
87
8
.315
2.6
.102
16.8
.661
8.4
.331
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
General tolerance
0.1 .004
0.2 .008
0.3 .012
4. High contact capacity type (1 Form A) (Plug-in type)
CAD Data
External dimensions
Schematic (Bottom view)
86
30
25.5
1.004
85
87
Including resistor type also available
4.0
.157 11.0
.433
15.0
.591
5.8
.228
2x6.3 ±0.08
2x.248 ±.003
26.5
1.043
4x1.7 dia. hole
4x.067 dia. hole
2x9.5±0.08
2x.374±.003
8.4
.331
0.8
.031
86
1.2
.047
16.8
.661
30
87
85
8.4
.331
17.9
.705
2.6
.102
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
ds_61202_en_cb: 010113J
22.0
.866
General tolerance
0.1 .004
0.2 .008
0.3 .012
7
CB
5. High contact capacity type (1 Form A) (PC board type)
CAD Data
External dimensions
Schematic (Bottom view)
86
30
25.5
1.004
1.0
.039
1.0
.039
4.5
.177
5.3
.209
3x1.7
3x.067
87
85
4.5
.177
3x1.7
3x.067
5.3
.209
2x2.15
9.5
6.3 2x.085
.374 .248
26.5
1.043
Sealed by epoxy resin
2x0.8
2x.031
2x1.2
2x.047
1.0
.039
A*
9.5
.374
22.0
.866
85
1.4
.055
30
87
7.8
.307
8.4
.331
16.8
.661
85
3¥2.15
3x.085
8.4
.331
3.9 3.9
.154 .154 17.9
.705
3x2.15
3x.085
2.6
.102
86
3x1.8
3x.071
3.9
.154 16.8
3.9 .661
.154
87
PC board pattern (Bottom view)
8.4
.331
86
30
Including resistor type also available
2.6
.102
7.8
.307
8.4
.331
17.9
.705
3x1.8
3x.071
Tolerance: 0.1 .004
* Intervals between terminals is measured at A surface level.
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
General tolerance
0.1 .004
0.2 .008
0.3 .012
NOTES
1. Soldering
Max. 350C 662F (solder temperature),
within 3 seconds (soldering time)
The effect on the relay depends on the
actual PC board used. Please verify the
PC board to be used.
2. Usage, transport and storage
conditions
1) Ambient temperature, humidity, and
atmospheric pressure during usage,
transport, and storage of the relay:
(1) Temperature: –40 to +85C –40 to
+185F (Standard type)
–40 to +125C –40 to +257F (High heatresistant type)
(2) Humidity: 2 to 85% RH (Avoid
freezing and condensation.)
(3) Atmospheric pressure: 86 to 106 kPa
The humidity range varies with the
temperature. Use within the range
indicated in the graph below.
(Temperature and humidity range for
usage, transport, and storage)
Humidity, %RH
85
Tolerance range
(Avoid freezing
when used at
temperatures
lower than
0°C 32°F) 5
2
–40
–40
(Avoid
condensation
when used at
temperatures
higher than
0°C 32°F)
0
+32
Temperature, °C °F
85
+185
110 125
+230 +257
For Cautions for Use, see Relay Technical Information.
8
ds_61202_en_cb: 010113J