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)
Terminal ShapeMarket CodeClassificationContact formEnclosure ratingsModelRated coil voltageMinimum
packing unit
PCB terminalsGeneral purposeStandardSPST-NO (1a)Flux protectionG5NB-1A5VDC
100 pcs/Tray
(50 pcs/tube)
Home ApplianceHigh-capacityFlux protectionG5NB-1A-E
Flux protectionG5NB-1A-E-HA12VDC
Coil Ratings
Rated voltage5 VDC12 VDC18 VDC24 VDC
Rated current40.0 mA16.7 mA11.1 mA8.3 mA
Coil resistance125 Ω720 Ω1,620 Ω2,880 Ω
Must operate voltage75% max. of rated voltage
Must release voltage10% min. of rated voltage
Max. voltageStandard : 180% (at23ºC)
High-capacity : 170% (at23ºC)
Power consumptionApprox. 200 mW
Note:1.The rated current and coil resistance are measured at a coil temperature of 23ºC with a tolerance of ±10%.

2.The operating characteristics are measured at a coil temperature of 23ºC.

3.The “Max. voltage” is the maximum voltage that can be applied to the relay coil.

Resistive load
Contact TypeSingle
Contact materialAg-alloy (Cd free)
Rated load3 A at 125 VAC5 A at 250 VAC
3 A at 30 VDC3 A at 30 VDC
Rated carry current3 A5 A
Max. switching voltage250 VAC, 30 VDC
Max. switching current3 A5 A

Contact resistance *1100 mΩ max.
Operate time10 ms max.
Release time10 ms max.
Insulation resistance *21,000 MΩ min. (at 500 VDC)
Dielectric strengthBetween coil and contacts4,000 VAC, 50/60 Hz for 1 min
Between contacts of the same polarity750 VAC, 50/60 Hz for 1 min
Impulse withstand voltageBetween coil and contacts10 kV (1.2 x 50 νs)
Vibration resistanceDestruction10 to 55 to 10 Hz, 0.75 mm single amplitude
(1.5 mm double amplitude)
Malfunction10 to 55 to 10 Hz, 0.75 mm single amplitude
(1.5 mm double amplitude)
Shock resistanceDestruction1,000 m/s2
Malfunction100 m/s2
DurabilityMechanical5,000,000 operations min.
ElectricalStandard (G5NB-1A, -1A4)

200,000 operations at 125 VAC, 3A

200,000 operations at 30 VDC, 3A
High-capacity (G5NB-1A-E, -1A4-E)

100,000 operations at 250 VAC, 5A

200,000 operations at 30 VDC, 3A
(with a rated load at 1,800 operations/hour)
Failure rate (P level) (reference value) *3DC5V 10mA
Ambient operating temperature*4-40ºC to 85ºC (with no icing or condensation)
Ambient operating humidity5% to 85%
WeightApprox. 4 g
NOTE: Values in the above table are the initial values at 23°C.

1.Measurement conditions: 5 VDC, 1 A, voltage drop method

2.Measurement conditions: Measured at the same points as the dielectric strength using a 500 VDC ohmmeter.

3.This value was measured at a switching frequency of 120 operations/min.

4.Sealed (G5NB-1A4, -1A4-E): -40°Cto 70°C
Note: All units are in millimeters unless otherwise indicated.

G5NB-1A(4)(-E), G5NB-1A-E-HA
PCB Mounting Holes
Tolerance: ±0.1 mm

Terminal Arrangement /
Internal Connections


(No coil polarity)

Correct Use


The enclosure rating of the G5NB is for flux protection. Do not use immersion-cleaning.