XYF-3D DC Solid State Relay | 5-32V Normally Closed 3A SSR

XYF-3D Micro DC Solid State Relay — Normally Closed, 5–32V Input, 3A Output

The XYF-3D Micro DC Solid State Relay is a compact, high-reliability switching solution designed for engineers, hobbyists, and industrial applications that demand fast, silent, and spark-free switching. With a wide input voltage range of 5–32V DC and a 3A rated output, this normally closed SSR is an ideal drop-in component for automation boards, PLCs, microcontrollers (Arduino, Raspberry Pi), and custom DC control circuits.

Key Features

• Compact Form Factor: Micro-sized design fits tight PCB layouts and enclosures without sacrificing performance.
• High Reliability: Solid-state construction with no moving parts means longer service life and consistent operation.
• Power Transistor Output: Rated at 3A continuous output current for robust load switching.
• High-Speed Switching: Turn-on time of just 0.08ms makes it suitable for high-frequency and time-critical applications.
• Optical Isolation: Input and output are isolated via optocoupler, protecting your control circuit from output-side voltage spikes.
• No Spark / No EMI: Zero mechanical contacts means no arc discharge, no electromagnetic interference, and no audible clicking — extending the life of connected components.
• Normally Closed Operation: Output is ON by default; applying the control signal opens (disables) the output — perfect for fail-safe circuit designs.
• PCB Weld-Mount: Direct solder mounting for a secure, vibration-resistant installation on your circuit board.

Full Technical Specifications

Input

• Input Voltage Range: 5–32V DC
• Input Current: ≤10mA
• Turn-Off Voltage: ≤3V DC
• On-Voltage Threshold: ≥1V DC
• Turn-On Time: 0.08ms
• Turn-Off (Shutdown) Time: 1.1ms

Output

• Working Current: 3A
• Operating Voltage: ≤50V DC
• Output Voltage Drop: ≤0.8V DC
• Output Leakage Current: ≤300µA
• Insulation Resistance: 1000MΩ
• Isolation Voltage: 1000V r.m.s.

Common Applications

• Microcontroller (Arduino / Raspberry Pi) DC load switching
• PLC and automation control panels
• Motor driver auxiliary circuits
• LED lighting control
• Battery management and power switching
• High-frequency signal switching circuits

What's in the Box

• 1× XYF-3D Solid State Relay

Made in Mainland China.

Note: Due to lighting and screen differences, the item's color may vary slightly from product images. Please allow 1–10mm tolerance due to manual measurement.

For guidance on electrical component safety standards, visit the U.S. Consumer Product Safety Commission (CPSC). For information on electronic component installation best practices, refer to OSHA Electrical Safety Guidelines.

Frequently Asked Questions

Q: What does "normally closed" mean for this solid state relay?

A: A normally closed (NC) solid state relay means the output circuit is closed (conducting) by default when no control signal is applied. When you apply an input signal within the 5–32V DC range, the relay opens and interrupts the output. This makes it ideal for fail-safe designs where the load must remain active unless intentionally switched off.

Q: Is this relay compatible with Arduino or Raspberry Pi control signals?

A: Yes. The XYF-3D SSR accepts a wide input range of 5–32V DC with a low input current (≤10mA), making it fully compatible with 5V and 3.3V logic-level signals from microcontrollers like Arduino and Raspberry Pi. The optical isolation also protects your microcontroller from any back-EMF or voltage spikes on the output side.

Q: Can this relay switch AC loads?

A: No. This is a DC output solid state relay with a maximum output operating voltage of 50V DC. It is designed exclusively for DC load switching and should not be used to control AC circuits.

Q: How is the XYF-3D mounted on a circuit board?

A: The XYF-3D uses a PCB weld (solder) mount. Simply align the relay pins with the appropriate footprint on your PCB and solder them in place. This provides a firm, vibration-resistant connection compared to socket or screw-terminal alternatives.