HFD31-24 Signal Submini Sealed Relay 24VDC DPDT Compact PCB Relay

The HFD31-24 relay from Hongfa is a subminiature sealed signal relay designed for reliable DPDT (Form 2C) switching in compact electronic systems. It is optimized for PCB-mounted applications where stable signal performance, long service life, and space efficiency are required.

This relay operates with a 24VDC coil and a coil resistance of 2880 , making it suitable for standard industrial control and logic-level drive circuits. Its sealed construction helps protect internal components from dust, moisture, and contamination, improving long-term operational reliability in demanding environments.

The HFD31-24 supports a maximum switching current of 1A at 30VDC and 0.5A at 125VAC, making it ideal for signal-level and low-power load switching. Gold flash contacts ensure excellent conductivity, low contact resistance, and consistent performance in sensitive electronic signal paths.

Its compact subminiature footprint allows efficient PCB layout design, particularly in high-density control boards where multiple relays are used in close proximity.

Features

Subminiature sealed DPDT (Form 2C) signal relay

24VDC coil for standard industrial control systems

Compact PCB-mounted design

Gold flash contacts for reliable low-level switching

Sealed housing for environmental protection

Stable performance in signal applications

Suitable for high-density PCB layouts

Long electrical and mechanical life

Low contact resistance for signal integrity

Designed for automation and control systems

Specifications

Model: HFD31-24

Brand: Hongfa

Device Type: Signal Submini Sealed Relay

Contact Form: Form 2C (DPDT / 2c/o)

Coil Rated Voltage: 24VDC

Coil Resistance: 2880

Max Switching Current: 1A

Electrical Ratings:

1A at 30VDC

0.5A at 125VAC

Contact Material: Gold Flash

Relay Type: Signal submini sealed relay

Mounting Type: PCB through-hole

Form Factor: Subminiature

Typical Applications

Industrial control systems

Telecommunications equipment

Signal routing circuits

Automation control boards

Embedded electronic modules

Instrumentation systems

PCB-based logic switching

Low-power signal distribution

The HFD31-24 is a reliable DPDT signal relay designed for stable performance in compact, sealed environments where consistent switching and long-term durability are essential.

What's in the box
1 x HFD31-24 Signal Submini Sealed Relay 24VDC DPDT Compact PCB Relay