HFD31-12-SR Signal Submini SMD Sealed Relay 12VDC DPDT

The HFD31-12-SR relay from Hongfa is a compact surface-mount (SMD) subminiature signal relay designed for reliable DPDT (Form 2C) switching in high-density PCB assemblies. It is engineered for low-power control applications where space efficiency, automated assembly, and stable signal performance are essential.

Operating with a 12VDC coil and 1028 coil resistance, this relay provides efficient drive characteristics suitable for standard logic and control circuits. Its 140mW coil power design ensures low energy consumption while maintaining consistent switching performance.

The HFD31-12-SR supports a maximum switching current of 1A at 30VDC and 0.5A at 125VAC. Gold flash contacts ensure excellent signal integrity, low contact resistance, and long-term stability, especially in low-level signal switching applications where reliability is critical.

The SMD package allows for automated PCB assembly and compact layout integration, while the sealed construction protects internal components from dust and environmental contaminants, improving operational longevity in industrial and embedded systems.

Features

• Surface-mount (SMD) subminiature DPDT signal relay
• 12VDC coil for standard control applications
• Low power consumption (140mW coil design)
• Compact sealed construction for reliability
• Gold flash contacts for stable signal switching
• Designed for automated PCB assembly
• High-density board integration friendly
• Stable low-level signal performance
• Long operational life and durability
• Suitable for industrial and embedded systems

Specifications

• Model: HFD31-12-SR
• Brand: Hongfa
• Device Type: Signal Submini SMD Relay
• Contact Form: Form 2C (DPDT / 2c/o)
• Coil Rated Voltage: 12VDC
• Coil Resistance: 1028
• Coil Power Consumption: 140mW
• Max Switching Current: 1A
• Electrical Ratings:1A at 30VDC
  0.5A at 125VAC
  
• Contact Material: Gold Flash
• Termination: SMD
• Pins: 10-pin configuration
• Mounting Type: Surface Mount Device (SMD)

Typical Applications

• Industrial control systems
• Telecommunications equipment
• Signal routing circuits
• Smart electronic modules
• Compact embedded PCB designs
• Automated control boards
• Low-power logic switching
• Measurement and instrumentation systems

The HFD31-12-SR is a reliable SMD DPDT signal relay designed for compact, low-power applications requiring stable switching performance and efficient PCB integration.

What's in the box
1 x HFD31-12-SR Signal Submini SMD Sealed Relay 12VDC DPDT