The Songle Relay 5V 10A Songle Mini Relay Relay is a Subminiature Light Weight Relay Songle power relay with a 5V coil-rated voltage and 10A SPDT contacts. The relays have 5 pins, are of high quality, and have a long operational life. 

Package Includes:

• 1 x Songle Relay 5V 10A

Features:

• Switching capacity available by 10A in spite of Small-size design for high-density P.C. board
• Selection of plastic material for high temperatures and better chemical solution performance.
• Simple relay magnetic circuit to meet the low cost of mass production.
• Black Color. 

Description:

The Songle SRD-05VDC-SL-C Relay has a High Maximum contact current of 10A, Automotive-Oriented Design, and Switching Improved Resistance to Shock and Vibration. It is Subminiature Lightweight and Appropriate for Heavy Motor Load. Small motors, incandescent bulbs, indication lights, low-power power supply, intelligent instruments, and various solenoid valves can all be controlled by it. It can even activate high-power electromagnetic contactors. It works particularly well in challenging environments.

Principle of Work:

The iron core of the relay is magnetized when a voltage is delivered to the electromagnetic coil, creating a magnetic field that pulls the armature toward it. This causes the contact to either open if the relay is ordinarily closed or close (closing the load circuit) (depending upon the construction). The load circuit is broken when the voltage is turned off because the spring will force the contacts apart.

Pinout of the Module:

Applications:

• Relay is used for ON/OFF applications
• Capable of switching multiple circuits
• Coil relays are used for the protection of circuits
• Controls high power circuit with a low-power signal
• For home appliances such as refrigerators, washing machines
• For molding equipment, packing machinery, vending machines
• They are used in Motor & lighting control
• Used in Aerospace, Defense, and automotive industries
• Used in traffic signal controllers, temperature controllers, heaters
• When the supply voltage is other than the rated voltage, a set of relays sense the voltage variations and control the load circuit with the help of circuit breakers.

Circuit:

A relay is used in the circuit depicted in the diagram below to switch 12 volts across a DC motor. The program writes a HIGH value to pin 3 to turn on the motor, activating the optocoupler, which turns on the transistor. A current travels through the relay coil when the transistor is turned on, closing the relay, connecting 12 volts across the motor, and starting it to spin.

Library:

This Module doesn't need a library to work.

Code:

 
void setup() {
  pinMode(3,OUTPUT);
}

void loop() {
  digitalWrite(3,HIGH);   // motor runs for one sec
  delay(1000); 
  digitalWrite(3,LOW);    // motor stops for one sec  
  delay(1000);
}

Technical Details:

• Pins number: Pins 5
• Type: SPDT Contacts
• Rated Load: 10A 250VAC, 10A 30VDC
• Dimensions: 19 x 15 x 15mm
• Max Switching Current: 10A
• Max Switching Voltage: 110VDC / 250VAC
• Coil Power: 0.45W
• Contact Arrangement: C:1 (NO/NC)

Resources:

Tutorial

Comparisons:

Relays use coils, magnetic fields, springs, and mechanical contacts to operate and switch a supply, unlike the solid-state relay (SSR) which has no moving parts and instead performs input-to-output isolation and switching functions using the electrical and optical properties of solid-state semiconductors. electromechanical relays like SSRs, provide complete electrical isolation between their input and output contacts, with their output acting similarly to a conventional electrical switch in that it has a very high, infinite resistance when nonconducting (open) and very low resistance when conducting. the normal relay can hold much more current in comparison to SSR.and the SSR doesn't need an optocoupler to completely isolate the power source side from the output but the SSR already works like an optocoupler. you can search the SSR on our website by clicking Here.