PCB Solid State Relay DC-AC SSR-D3803HK D3805HK D3808HK 3A 5A 8A
PCB Solid State Relay DC-AC SSR-D3803HK D3805HK D3808HK 3A 5A 8A
PCB Solid State Relay – DC-AC SSR with Pins (3A / 5A / 8A)
This compact, PCB-mounted Solid State Relay (SSR) is purpose-built for low-power DC-to-AC switching applications. Whether you're building an automation controller, temperature regulator, or industrial PCB project, the SSR-D3803HK / D3805HK / D3808HK delivers reliable, silent switching with zero mechanical wear. The sealed, pin-through design makes it ideal for direct PCB integration without additional mounting hardware.
Key Features
- Three Load Current Options: 3A, 5A, or 8A – choose the model that fits your circuit requirements
- Wide Input Voltage Range: 3–32V DC input, compatible with most microcontrollers and PLCs
- Wide Load Voltage Range: 24–380V AC output, suitable for a broad range of AC-powered loads
- DC-to-AC Operation: Switch AC loads directly from a DC control signal
- Sealed, Low-Profile Design: Compact 43mm × 24mm × 12mm form factor; weighs only 22g
- Wide Ambient Temperature Range: Operates from -30°C to +70°C for reliable performance in demanding environments
- PCB Pin Integration: Dedicated pins allow direct soldering onto PCBs for a clean, secure installation
- General Purpose Use: Suitable for automation, HVAC control, lighting, motor control, and more
Technical Specifications
| Model Numbers | SSR-D3803HK / D3805HK / D3808HK |
| Input Voltage | 3–32V DC |
| Input Current | 6–35 mA |
| Load Current | 3A / 5A / 8A (model dependent) |
| Load Voltage | 24–380V AC |
| Operating Mode | DC-AC |
| Ambient Temperature | -30°C to +70°C |
| Dimensions | 43mm × 24mm × 12mm |
| Weight | 22g |
| Protection | Sealed |
| Power Source | DC |
Made in Mainland China.
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Frequently Asked Questions
Q: What is the difference between the SSR-D3803HK, D3805HK, and D3808HK models?
A: The key difference is the load current rating. The D3803HK supports up to 3A, the D3805HK supports up to 5A, and the D3808HK supports up to 8A. All three share the same input voltage range (3–32V DC), load voltage range (24–380V AC), PCB pin design, and compact 43mm × 24mm × 12mm dimensions. Choose the model that matches your circuit's current requirements.
Q: Can this solid state relay be controlled directly by a microcontroller or Raspberry Pi?
A: Yes. With an input voltage range of 3–32V DC and an input current of just 6–35mA, this SSR is fully compatible with microcontrollers, Arduino, Raspberry Pi, and PLC output signals. It can directly switch AC loads up to 380V without the need for additional driver circuitry.
Q: Is this relay suitable for direct PCB soldering?
A: Absolutely. The SSR is specifically designed for PCB integration, featuring dedicated through-hole pins that allow you to solder it directly onto your PCB for a stable, compact, and clean installation — no separate mounting bracket required.