Relay (5V) Songle SRD-5VDC-SL-C

The Relay (5V) Songle SRD-5VDC-SL-C is a sealed electromechanical PCB relay with a 5 V DC coil and one changeover contact. A small control current through the coil switches a separate load circuit of up to 10 A, so it is widely used to turn lamps, pumps, fans and other loads on and off from an Arduino, ESP32 or timer circuit. It is the same relay used on most 5 V relay modules.

Relay (5V) Songle SRD-5VDC-SL-C Specifications

• Coil voltage: 5 V DC
• Coil resistance: about 70 Ω (about 71 mA, 0.36 W)
• Contact form: SPDT changeover (1 form C): COM, NO and NC
• Contact rating: 10 A 250 VAC, 10 A 30 VDC
• Pins: 5 (2 coil, COM, NO, NC)
• Construction: sealed type, through-hole PCB mount

Relay (5V) Songle SRD-5VDC-SL-C Applications

• Switching lamps, pumps, fans and solenoids from a microcontroller
• Home automation and IoT projects with ESP32 or ESP8266
• Building your own relay modules and control boards
• Timer, thermostat and alarm circuits
• Electronics education and repair

What's in the Box

• 1 × Songle SRD-05VDC-SL-C 5 V relay

Tip: The coil needs about 71 mA, more than an Arduino pin should supply, so drive it through an NPN transistor such as the BC547 or 2N2222 and fit a 1N4007 diode across the coil to absorb the switch-off spike. Take great care with mains wiring and keep it fully insulated.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.