HFD3-4.5-L2 Signal Sub Mini Sealed 2-Coil Latching Relay - 4.5VDC 2A

The HFD3-4.5-L2 is a compact subminiature signal relay designed for reliable switching in space-constrained electronic systems. Built with a sealed housing and high-quality gold flash bifurcated contacts, it delivers stable signal performance, low contact resistance, and long operational life in demanding applications.

This version uses a 2-coil latching mechanism, allowing separate set and reset coil control. The relay maintains its state without continuous coil power, making it highly energy-efficient and ideal for battery-powered or power-sensitive systems. Operating at 4.5VDC with a 2A switching capacity, it is suitable for precision control and signal routing applications.

With a surge withstand capability up to 2500VAC and compliance with international safety standards, this relay is designed for robust performance in industrial, communication, and automation environments.

Features

Subminiature sealed signal relay design

2-coil latching mechanism (set/reset control)

Form 2C (DPDT / 2c/o) contact configuration

Gold flash bifurcated contacts for reliable low-level switching

High surge withstand voltage up to 2500VAC

Meets FCC Part 68 and Telecordia standards

Complies with EN60950 and EN41003 safety standards

SMT and DIP compatible design options

Stable latching operation with no continuous coil power required

Designed for compact, high-reliability signal switching applications

Sealed construction for improved environmental resistance

Specifications

Model: HFD3-4.5-L2

Device Type: Signal Sub Mini Sealed Relay

Relay Type: 2-Coil Latching

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

Coil Voltage: 4.5VDC

Coil Resistance: 101 / 101

Max Switching Current: 2A

Electrical Ratings:

2A at 30VDC

0.5A at 125VAC

4A at 220VDC / 277VAC (max)

Contact Material: Gold Flash Contacts

Surge Withstand Voltage: 2500VAC

Mounting Type: SMT / DIP compatible

Construction: Sealed subminiature relay

Applications

Telecom and communication systems

Industrial control circuits

Automation and switching logic

Instrumentation and measurement devices

Battery-powered control systems

PCB signal routing and isolation circuits

Compact embedded electronic modules

What's in the box
1 x HFD3-4.5-L2 Signal Sub Mini Sealed 2-Coil Latching Relay - 4.5VDC 2A