Product Details Portlet

G5NB PCB Power Relay
A Miniature Relay with 1-pole 3A/5A Switching Capability and 10 kV Impulse Withstand Voltage
- Highly efficient magnetic circuit for high sensitivity (200 mW).
- Small, yet provides 10-kV impulse withstand voltage (between coil and contacts).
- Standard model conforms to UL/CSA/VDE standards.
- Satisfies EN61010 reinforced insulation requirements.
- IEC/EN 60335-1 conformed. (-HA Model)
- IEC/EN 60079-15 conformed. (Only for G5NB-1A4, G5NB-1A4-E Model)
RoHS Compliant
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
Ordering Information
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Terminal Shape | Market Code | Classification | Contact form | Enclosure ratings | Model | Rated coil voltage | Minimum packing unit |
---|---|---|---|---|---|---|---|
PCB terminals | General purpose | Standard | SPST-NO (1a) | Flux protection | G5NB-1A(-SP) | 5VDC 12VDC 18VDC 24VDC |
100 pcs/Tray (50 pcs/tube) |
Sealed | G5NB-1A4(-SP) | ||||||
Flux protection | G5NB-1A-CF(-SP) | 5VDC 12VDC 24VDC |
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G5NB-1A-CF-PW(-SP) | |||||||
G5NB-1A-PW(-SP) | |||||||
High-capacity | G5NB-1A-E(-SP) | 5VDC 12VDC 18VDC 24VDC |
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Sealed | G5NB-1A4-E(-SP) | ||||||
Home Appliance | Standard | Flux protection | G5NB-1A-HA(-SP) | 5VDC 12VDC 24VDC |
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G5NB-1A-HA-CF(-SP) | |||||||
G5NB-1A-HA-CF-PW(-SP) | |||||||
G5NB-1A-HA-PW | |||||||
High-capacity | G5NB-1A-E-HA(-SP) | 12VDC 24VDC |
Ratings
Coil
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Rated voltage | Rated current (mA) |
Coil resistance (Ω) |
Must operate voltage (V) |
Must release voltage (V) |
Max. voltage (V) |
Power consumption (mW) |
---|---|---|---|---|---|---|
% of rated voltage | ||||||
5 VDC | 40 | 125 | 75% max | 10% min. 10 to 31%∗ |
|
Approx. 200 Approx. 32∗ |
12 VDC | 16.7 | 720 | ||||
18 VDC | 11.1 | 1,620 | ||||
24 VDC | 8.3 | 2,880 |
Contacts
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Item |
Resistive load
|
|
---|---|---|
Standard
|
High-capacity
|
|
Contact Type | Single | |
Contact material | Ag-alloy (Cd free) | |
Rated load | 3 A at 125 VAC | 5 A at 250 VAC |
3 A at 30 VDC | 3 A at 30 VDC | |
Rated carry current | 3 A | 5 A |
Max. switching voltage | 250 VAC, 30 VDC | |
Max. switching current | 3 A | 5 A |
Characteristics
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Contact resistance∗1 | 100 mΩ max. | |
---|---|---|
Operate time | 10 ms max. | |
Release time | 10 ms max. | |
Insulation resistance∗2 | 1,000 MΩ min. (at 500 VDC) | |
Dielectric strength | Between coil and contacts | 4,000 VAC, 50/60 Hz for 1 min |
Between contacts of the same polarity | 750 VAC, 50/60 Hz for 1 min | |
Impulse withstand voltage | Between coil and contacts | 10 kV (1.2 x 50 νs) |
Vibration resistance | Destruction | 10 to 55 to 10 Hz, 0.75 mm single amplitude (1.5 mm double amplitude) |
Malfunction | 10 to 55 to 10 Hz, 0.75 mm single amplitude (1.5 mm double amplitude) |
|
Shock resistance | Destruction | 1,000 m/s2 |
Malfunction | 100 m/s2 | |
Durability | Mechanical | 5,000,000 operations min. |
Electrical | Standard (G5NB-1A, -1A4)
|
|
Failure rate (P level) (reference value)∗3 | DC5V 10mA | |
Ambient operating temperature∗4 | -40°C to 85°C (with no icing or condensation) | |
Ambient operating humidity | 5% to 85% | |
Weight | Approx. 4 g |
Other data
Creepage distance | 6.0 mm min. | |
---|---|---|
Clearance distance | 6.0 mm min. | |
Insulation Material Group | III a | |
Type of insulation | coil-contact circuit |
|
open contact circuit | ||
Rated Insulation Voltage | 250V | |
Pollution degree | 3 | |
Rated voltage system | 250V | |
Overvoltage category | III | |
Category of protection according to IEC 61810-1 | RT II (Flux protection) / RT III (Sealed) | |
Glow wire according to IEC 60335-1 | < HA Models only > GWT 750°C min. (IEC 60695-2-11) / GWFI 850°C min. (IEC 60695-2-12) |
|
Tracking Index of relay base | PTI 250V min. (housing parts) | |
Flammability class according to UL94 | V-0 |
Dimensions
(Unit: mm)
G5NB-1A(4)(-E), G5NB-1A-E-HA
-
∗ Average value
-
PCB Mounting Holes (BOTTOM VIEW) Tolerance: ±0.1 mm
Terminal Arrangement / Internal Connections
(BOTTOM VIEW)(No coil polarity)
Precautions
Please refer to “PCB Relays Common Precautions” for correct use.
Correct Use
Coil Voltage Reduction (Holding Voltage) after Relay Operation
- If the coil voltage is reduced to the holding voltage after Relay operation, first apply the rated voltage to the coil for at least 100 ms, as shown below.
- A voltage of at least 40% of the rated voltage is required for the coil holding voltage. Do not allow voltage fluctuations to cause the coil holding voltage to fall below this level.

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Applied coil voltage | Coil resistance∗ | Power consumption | |
---|---|---|---|
Rated voltage | 100% | 125Ω (5 VDC) 720Ω (12 VDC) 2880Ω (24 VDC) |
Approx. 200 mW |
Holding voltage | 40% | Approx. 32 mW |