SSR-40DD DC 3-32V Input to DC 5-200V Solid state relay Documentation

Input voltage range

3-32V DC

Input current

10mA (max)

Input impedance

1k (typical)

Output Characteristics:

Output voltage range

5-200V DC

Output current

40A (max)

Output power

800W (max)

Switching Characteristics:

Turn-on time	1ms (typical)
Turn-off time	1ms (typical)

Switching frequency

100Hz (max)

Isolation Characteristics:
Protective Features:

Input-to-output isolation voltage	2500V AC (rms)
Input-to-output isolation resistance	100M (typical)

Overvoltage protection (OVP)

Overcurrent protection (OCP)

Thermal protection (TP)

Physical Characteristics:

Dimensions

50mm x 30mm x 25mm (L x W x H)

Weight

45g (typical)

Mounting type

Through-hole mounting

Operating Conditions:

Operating temperature range

-40C to 85C

Storage temperature range

-40C to 125C

Humidity

5% to 95% RH (non-condensing)

Certifications and Compliance:

RoHS compliant

CE marked

UL recognized ( pending )

Application Notes

The SSR-40DD is suitable for use in a wide range of applications, including industrial control systems, power supplies, LED lighting, and electronic devices.

Ensure proper heat sinking to prevent overheating, especially in high-power applications.

The relay can be controlled using a digital signal from a microcontroller or other control device.

The output voltage and current should be within the specified ratings to ensure reliable operation.

Safety Precautions

Handle the component with care to prevent damage from electrostatic discharge.

Follow proper safety procedures when working with high-voltage and high-current circuits.

Ensure proper isolation and insulation of the relay and load circuit to prevent electrical shock.

By following the specifications and guidelines outlined in this documentation, users can ensure safe and reliable operation of the SSR-40DD solid-state relay in their applications.

Pin Configuration

SSR-40DD DC Solid State Relay Module
The SSR-40DD is a DC input to DC output solid-state relay module, capable of controlling high-power loads with a small input signal. It features a compact design, high reliability, and low power consumption.
Pinout Explanation:
The SSR-40DD module has a total of 6 pins, each serving a specific purpose. Here's a detailed explanation of each pin:
1. VCC (Input Voltage Pin)
Description: This pin is used to power the SSR module.
Voltage Range: 3-32V DC
Connection: Connect the positive terminal of the input power source (e.g., a battery or a DC power supply) to this pin.
2. IN (Input Signal Pin)
Description: This pin receives the control signal from a microcontroller, logic circuit, or other control devices.
Voltage Range: 3-32V DC (compatible with 3.3V, 5V, and 12V logic levels)
Connection: Connect the output of the control device (e.g., a microcontroller's digital output pin) to this pin.
3. GND (Ground Pin)
Description: This pin is the ground reference point for the SSR module.
Connection: Connect the negative terminal of the input power source (e.g., a battery or a DC power supply) to this pin.
4. V+ (Output Voltage Pin)
Description: This pin outputs the load voltage, which is isolated from the input voltage.
Voltage Range: 5-200V DC
Connection: Connect the positive terminal of the load (e.g., a light bulb, motor, or solenoid) to this pin.
5. OUT (Output Pin)
Description: This pin is the switch output, which is turned on or off according to the input signal.
Connection: Connect the negative terminal of the load (e.g., a light bulb, motor, or solenoid) to this pin.
6. GND (Output Ground Pin)
Description: This pin is the ground reference point for the load.
Connection: Connect the load's ground terminal to this pin.
Connection Structure:
To connect the SSR-40DD module, follow this structure:
Connect the input power source (VCC and GND pins) to a suitable power supply or battery.
Connect the control signal (IN pin) to a microcontroller, logic circuit, or other control devices.
Connect the load (V+ and OUT pins) to the device being controlled (e.g., a light bulb, motor, or solenoid).
Ensure the load's ground terminal is connected to the GND (Output Ground Pin) on the SSR module.
Important Notes:
Ensure the input voltage and current ratings are within the specified range to prevent damage to the SSR module.
Use suitable heat sinks or thermal management for high-power applications.
Follow proper PCB design and layout practices to minimize electromagnetic interference and ensure reliable operation.
By following this pinout explanation and connection structure, you can effectively use the SSR-40DD solid-state relay module in your IoT projects.

Code Examples

SSR-40DD DC 3-32V Input to DC 5-200V Solid State Relay Documentation

Overview

The SSR-40DD is a high-power solid-state relay (SSR) that can handle a wide range of input voltages (3-32V DC) and output voltages (5-200V DC). This relay is designed for high-reliability and high-performance applications, making it suitable for industrial, medical, and other demanding environments.

Pinout

The SSR-40DD has four pins:

VCC: Input voltage (3-32V DC)
 GND: Ground
 IN: Input signal (logic level, 0-5V)
 OUT: Output switching pin (5-200V DC)

Operating Characteristics

Input Voltage: 3-32V DC
 Output Voltage: 5-200V DC
 Output Current: Up to 40A
 On-State Resistance: < 0.01 ohms
 Off-State Leakage Current: < 1mA
 Operating Frequency: DC to 100Hz
 Response Time: < 1ms

Code Examples

### Example 1: Basic ON/OFF Control using Arduino

In this example, we'll use an Arduino Uno to control the SSR-40DD relay. We'll connect the relay's VCC to the Arduino's 5V pin, GND to GND, and the IN pin to a digital output (D13).

```cpp
const int relayPin = 13;  // Choose a digital pin for the relay input

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

void loop() {
  // Turn the relay ON
  digitalWrite(relayPin, HIGH);
  delay(1000);

// Turn the relay OFF
  digitalWrite(relayPin, LOW);
  delay(1000);
}
```

### Example 2: PWM Control using Raspberry Pi

In this example, we'll use a Raspberry Pi to control the SSR-40DD relay using PWM (Pulse-Width Modulation). We'll connect the relay's VCC to the Raspberry Pi's 3.3V pin, GND to GND, and the IN pin to a GPIO pin (GPIO18).

```python
import RPi.GPIO as GPIO
import time

# Set up GPIO mode
GPIO.setmode(GPIO.BCM)

# Set up the relay input pin
relay_pin = 18
GPIO.setup(relay_pin, GPIO.OUT)

try:
    while True:
        # 50% duty cycle (relay ON for 50% of the period)
        GPIO.PWM(relay_pin, 50)
        time.sleep(1)
        
        # 25% duty cycle (relay ON for 25% of the period)
        GPIO.PWM(relay_pin, 25)
        time.sleep(1)
        
        # 0% duty cycle (relay OFF)
        GPIO.PWM(relay_pin, 0)
        time.sleep(1)

except KeyboardInterrupt:
    # Clean up GPIO on exit
    GPIO.cleanup()
```

### Example 3: Analog Control using ESP32

In this example, we'll use an ESP32 board to control the SSR-40DD relay using an analog signal. We'll connect the relay's VCC to the ESP32's 3.3V pin, GND to GND, and the IN pin to an analog output pin (A0).

```cpp
#include <WiFi.h>
#include <AnalogOut.h>

const int relayPin = A0;  // Choose an analog output pin for the relay input

void setup() {
  // Initialize the analog output pin
  AnalogOut.begin(relayPin);
}

void loop() {
  // Set the relay output to 50% of the maximum voltage (VCC/2)
  AnalogOut.write(relayPin, 128);
  delay(1000);
  
  // Set the relay output to 25% of the maximum voltage (VCC/4)
  AnalogOut.write(relayPin, 64);
  delay(1000);
  
  // Set the relay output to 0% of the maximum voltage (GND)
  AnalogOut.write(relayPin, 0);
  delay(1000);
}
```

Important Notes

Always ensure the relay is properly powered and the input voltage is within the specified range to avoid damage or malfunction.
 Use proper safety precautions when working with high-voltage and high-current applications.
 Refer to the datasheet and manufacturer's guidelines for specific usage and application notes.

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SSR-40DD DC 3-32V Input to DC 5-200V Solid state relay