HFD3-5-L1SR Signal Sub Mini Seal SMD 1-Coil Latching Relay 5VDC DPDT

The HFD3-5-L1SR is a high-performance subminiature surface-mount (SMD) latching relay designed for reliable operation in compact electronic circuits. Featuring a single-coil latching mechanism with a Form 2C (DPDT / 2c/o) contact configuration, it maintains its state without continuous coil energization, making it energy-efficient for low- to medium-power applications.

With a 5VDC coil and 250 resistance, this relay can handle a maximum switching current of 2A at 30VDC and 0.5A at 125VAC, while supporting up to 4A at 220VDC/277VAC for momentary loads. Gold flash bifurcated contacts enhance conductivity and minimize contact bounce, ensuring consistent and reliable switching.

Designed for SMT applications, the HFD3-5-L1SR also withstands surge voltages up to 2500VAC, meeting FCC Part 68, Telecordia, EN60950, and EN41003 standards. Its compact footprint is ideal for dense PCB layouts, industrial controls, and telecommunication systems.

Features

Single-coil latching DPDT relay (Form 2C / 2c/o)

5VDC coil, 250 resistance, 140-200mW low power operation

Maximum switching: 2A at 30VDC, 0.5A at 125VAC, 4A@220VDC/277VAC max momentary

Gold flash bifurcated contacts for high reliability

Compact SMD design for PCB space-saving

Surge withstand voltage: 2500VAC

Meets FCC Part 68, Telecordia, EN60950, EN41003

Single side stable and latching type

Suitable for precision signal, control, and automation circuits

Specifications

Model: HFD3-5-L1SR

Brand: Hongfa

Device Type: Signal Sub Mini Seal Latching Relay

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

Coil Rated Voltage: 5VDC

Coil Resistance: 250

Max Switching Current: 2A (30VDC), 0.5A (125VAC)

Max Switching Voltage: 250VAC

Contact Material: Gold Flash

Coil Feature: Single-coil latching

Mounting Type: Surface Mount (SMD)

Isolation / Surge Withstand: 2500VAC

Applications

Industrial automation and control boards

Telecommunications and signal routing

Battery-operated and energy-efficient devices

Embedded PCB modules with high-density layouts

Remote switching systems

Precision instrumentation requiring compact, reliable relays

The HFD3-5-L1SR delivers a robust combination of compact size, high reliability, and energy efficiency, making it an excellent choice for engineers seeking durable and precise subminiature latching relays for demanding electronic projects.

What's in the box
1 x HFD3-5-L1SR Signal Sub Mini Seal SMD 1-Coil Latching Relay 5VDC DPDT