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    12V DC Signal Relay, SPDT, 3A

    5 out of 5 based on 1 reviews | Write a review
    12V DC low signal relay for sale, coil nominal power 360mW/200mW/450mW available, contact form SPDT (1C), 3A contact switching capability, rated load 1A 240VAC/30VDC, 3A 120VAC.
    SKU: ATO-SR-W38DC12V
    This product has a minimum quantity of 10
    30-day Returns
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    Delivery date: 6-12 days

    12V DC signal relay with full-turn and full-negative electromagnetic coil is more stable and precise.


    • 3A contact switching capability.
    • Contact form: SPDT (1C).
    • High sensitive type, coil power is 200mW/360mW/450mW.
    • Standard DIP construction terminal.
    • Ultra – small type, gold – plated contacts.
    • Suit for complete machine wave soldering and integral cleaning process.
    • Main applications: Electric power protection, automation, communication.


    Model ATO-SR-FH38DC12V
    Type Standard Type Sensitive Type High Power Consumption Type
    Coil Parameters (23℃) Nominal Voltage DC 12V
    Nominal Power 360mW 200mW 450mW
    Pick-up Voltage ≤9VDC ≤9VDC ≤9VDC
    Drop-out Voltage ≥0.60VDC ≥0.60VDC ≥0.60VDC
    Rated Current 30mA 17.6mA 37.5mA
    Coil Resistance 400Ω 720Ω 320Ω
    Max Voltage DC 15.6V DC 15.6V DC 15.6V
    Contact Parameters Contact Form SPDT (1C)
    Contact Resistance (Initial) ≤100mΩ (6VDC 0.1A)
    Contact Material AgNi + Gold Plating
    Rated Value Rated Load (Resistance Load) 1A 240VAC/30VDC
    3A 120VAC
    Max. Switching Voltage 240VAC/30VDC
    Max. Switching Current 5A
    Max. Switching Capacity 360VA/30W
    Min. Allowing Load 5VDC 100mA
    Electrical Performance Insulation Resistance (Initial) 1000mΩ (500VDC)
    Dielectric Strength (Initial) Between Open Contacts 500VAC, 1 min
    Between Coil & Contacts 1000VAC, 1 min
    Operate Time ≤10ms
    Release Time ≤5ms
    Mechanical Performance Shock Resistance Functional 98m/s2(10g)
    Destructive 980m/s2(100g)
    Vibration Resistance 10Hz ~ 55Hz 1.5mm DA
    Endurance Mechanical 1 x 107ops
    Electrical 1A 240VAC 1 x 105ops (ON/OFF=1s/9s)
    3A 120VDC 5 x 104ops (ON/OFF=1s/9s)
    Operate Condition Ambient Temperature -25℃ ~ 70℃
    Humidity 5% to 85%
    Termination PCB (DIP Encapsulation)
    Unit Weight 5g
    Construction Plastic Sealed, Flux Proofed

    Note: In order to maintain the initial performance parameters of the signal relay, please be careful not to drop it.


    Units: mm

    Dimensions of Signal Relay

    Performance curves

    Performance Curves of Signal Relay

    6 tips for using signal relay

    1. Do not remove the shell of the signal relay lest the performance cannot be retained.
    2. Use the signal relay in the normal temperature and humidity environment without dust, SO2, H2S or other organic gas, because high humidity is easy to accelerate the corrosion of the signal relay structural parts and dust is easy to make its contact failure.
    3. Do not power on the set and reset coils at the same time.
    4. Do not continuously apply more than the maximum allowable voltage.
    5. Generally, when the ambient temperature does not exceed the specified range in the specification, the signal relay can work normally. When the actual ambient temperature is slightly higher than the maximum value, it is necessary to contact a technician to determine whether the signal relay can be used normally according to the load situation.
    6. The external dimensions of signal relays have certain tolerances. Therefore, it is recommended to design the circuit and the installation clearance according to the maximum size specified in the manual.
    Existing reviews of 12V DC Signal Relay, SPDT, 3A
    Great value for the money.
    I bought ten of these 12V DC signal relays and they are great value for the money. Work perfectly. Highly recommend and I will be buying from ATO again.
    From: Dean | Date: 28/06/2022
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