Product Details Portlet

G5CA PCB Power Relay

Flat Relays that Switch 10A/15A Loads Power

  • Ideal for switching power in household appliances or for outputs from industrial devices.
  • Subminiature dimensions: 16 × 22 × 11 mm (L × W × H).
  • High-sensitivity models available with low power consumption (150 mW).
  • Standard model conforms to UL/CSA standards.
  • Sealed models are available
  • Quick-connect terminal models are also available (#187 load contact terminals).
  • IEC/EN 60335-1 conformed. (-HA Model)
RoHS Compliant
Model 2D/3D CAD ECAD(Download symbol,FootPrint,3DCAD)
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G5CA-1A Download Download
G5CA-1A4 Download Download
G5CA-1A4-H Download Download
(*) Ultra Librarian uniquely created ECAD data based on the information provided by OMRON. Please note that OMRON does not guarantee the accuracy, concurrence or completeness of ECAD data.
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
Terminal Shape Market Code Classification Contact form Enclosure rating Model Rated coil voltage Minimum packing unit
PCB terminals General purpose Standard SPST-NO (1a) Flux protection G5CA-1A 5VDC
20 pcs/Tube
Sealed G5CA-1A4
High-sensitivity Flux protection G5CA-1A-H
Sealed G5CA-1A4-H
High-capacity Flux protection G5CA-1A-E
Home Appliance G5CA-1A-E-HA 12VDC
Quick-connect terminals (#187) General purpose G5CA-1A-TP-E 5VDC
Note: 1. When ordering, add the rated coil voltage to the model number.
However, the notation of the coil voltage on the product case as well as on the packing will be marked as □□ VDC.
  2. Contact your OMRON representative for details on other coil voltage specifications.
  3. High-capacity models with a fully sealed structure are not available.
  4. Standard or high-sensitivity models with quick-connect terminals are not available.
Coil Ratings
5 VDC 12 VDC 24 VDC 5 VDC 12 VDC 24 VDC
Rated current 40 mA 16.7 mA 8.3 mA 30 mA 12.5 mA 6.25 mA
Coil resistance 125 Ω 720 Ω 2,880 Ω 167 Ω 960 Ω 3,840 Ω
Must-operate voltage 75% max. of rated voltage 80% max. of rated voltage
Must-release voltage 10% min. of rated voltage
Max. voltage 150% (standard)/130% (high-capacity, quick-connect terminals) (at 23ºC) 150% (at 23ºC)
Power consumption Approx. 200 mW Approx. 150 mW
Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
Note: 2. The operating characteristics are measured at a coil temperature of 23°C.
Note: 3. The "maximum voltage" is the maximum voltage that can be applied to the relay coil.


Resistive load
Inductive load
( cosφ = 0.4,
L/R = 7 ms )
Resistive load
Inductive load
( cosφ = 0.4,
L/R = 7 ms )
Contact type Single
Contact material Silver alloy (cadmium-free)
Rated load 10 A at 250 VAC;
10 A at 30 VDC
3 A at 250 VAC;
3 A at 30 VDC
10 A at 250 VAC;
10 A at 30 VDC
3 A at 250 VAC;
3 A at 30 VDC
Rated carry current 10 A 10 A
Max. switching voltage 250 VAC, 125 VDC
Max. switching current 10 A 10 A

Contact resistance *1 30 mΩ max.
(Quick-connect terminals type: 100 mΩ max.)
Operate time 10 ms max.
15 ms max. (High-Sensitivity models)
Release time 10 ms max.
Insulation resistance *2 1,000 MΩ min.
Dielectric strength Between coil and contacts 2,500 VAC, 50/60 Hz for 1 min
Between contacts of the same polarity 1,000 VAC, 50/60 Hz for 1 min
Impulse withstand voltage 4,500 V (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 200 m/s2
Durability Mechanical 2,000,000 operations min. (at 18,000 operations/hr)
Electrical Resistive load
· Standard model
  250 VAC 10 A, 300,000 operations min.
(100,000 operations min. for plastic-sealed and high-sensitivity models)
· High capacity and quick-connect terminals
  110 VAC 15A, 100,000 operations min.
· For all models
  30 VDC 10 A, 100,000 operations
Inductive load
  250 VAC 10 A, 300,000 operations min.
(100,000 operations min. for plastic-sealed and high-sensitivity models)
[Switching frequency at 1,200 operations/h (for all models)]
Failure rate (P level) (reference value) *3 5 VDC, 100 mA
Ambient operating temperature Operating: -25ºC to 70ºC (with no icing or condensation)
Ambient operating humidity Operating: 5% to 85%
Weight Approx.8 g (for TP model: Approx. 9.6 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.
Note: All units are in millimeters unless otherwise indicated.


Internal Connections
Mounting Holes (PCB)
Tolerance: ±0.1 mm


Correct Use


Make sure that sufficient space is provided between relays when installing two or more relays side by side to facilitate heat dissipa- tion. Insufficient heat dissipation may result in the relay malfunc- tioning.

●Quick-connect Terminal Connections

·Do not pass current through the PCB of the load contact termi- nals (quick-connect terminals).
·The terminals are compatible with Faston receptacle #187 and are suitable for positive-lock mounting. Use only Faston terminals with the specified numbers. Select leads for connecting Faston receptacles with wire diameters that are within the allowable range for the load current. Do not apply excessive force to the terminals when mounting or dismounting the Faston receptacle.
Insert and remove terminals carefully one at a time. Do not insert terminals on an angle, or insert/remove multiple terminals at the same time.
The following positive-lock connectors made by AMP are recom- mended. Contact the manufacturer directly for details on con- nectors including availability.

●Charged Terminals

The section marked with dotted circles (indicated by arrows) in the following diagram includes the charged terminals of the relay. When the relay is mounted on a PCB, make sure that there are no metal patterns on the section of the PCB facing the portion of the relay shaded in the following diagram..

●Other Precautions

·The G5CA is a power relay designed for applications switching power loads such as heaters in electric household appliances. Do not use the G5CA to switch micro loads less than 100 mA, such as in signal applications.
·Use fully sealed models if the relays will require washing. Flux- protection models may malfunction or the relay's performance may be otherwise adversely affected if cleaning fluid enters the relay.