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Relay SPDT 12VDC Coil 12A 5 Pin

🔁 12 V DC Power Relay – SPDT 5 A


Overview

A compact 12 V DC SPDT relay rated for switching up to 5 A at 250 VAC or 30 VDC. Commonly used in automotive, industrial, and hobbyist projects to control high-voltage or high-current loads via a low-voltage signal (e.g., Arduino output, 12 V trigger).

Key Features

  • Coil Voltage: 12 V DC

  • Contact Configuration: SPDT (1 Form C) – Common, Normally Open, Normally Closed

  • Contact Rating: 5 A at 250 VAC / 30 VDC

  • Coil Power: ~360 mW (400 Ω coil)

  • Operate/Release Times: ~10 ms / 5 ms

  • Compact through-hole mounting, PCB-ready

  • Durable and widely used across electronics applications 

Technical Specifications

ParameterValue
Coil Voltage12 V DC
Coil Resistance~400 Ω (360 mW)
Pick-Up Voltage~9 V
Drop-Out Voltage~1.2 V
Contact Rating5 A @ 250 VAC / 30 V DC
Switching Time≤10 ms / ≤5 ms
Mechanical Life10⁷ cycles
Electrical Life10⁵ cycles @ rated load
Insulation Resistance≥1000 MΩ @ 500 V DC
Dielectric Strength≥1500 VAC (coil‑contacts)
Operating Temperature–25 °C to +70 °C
Mounting StyleThrough-hole PCB

Wiring to Arduino (12 V Trigger Example):

  • Coil + → 12 V

  • Coil – → NPN transistor collector → Arduino GPIO via 1 kΩ resistor

  • Arduino GPIO → Base of transistor + base resistor (e.g., 4.7 kΩ); include a flyback diode across coil

  • Common (COM) → Input voltage (e.g., 12 V)

  • Normally Open (NO) → Load (e.g., motor, lamp) → Ground

Use transistor or MOSFET to avoid drawing coil current directly from Arduino.

Applications

  • Automotive and accessory power control

  • Home automation (lighting, pumps, fans)

  • High-voltage switching with microcontrollers

  • Isolation between high- and low-voltage circuits

  • Industrial control and signal routing

Resources

15.00 LE 15.00 LE

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