HFD4-3-LSR Signal Subminiature Mini Sealed Surface Mount Latching Relay 3VD

The HFD4-3-LSR is a compact subminiature sealed surface-mount latching relay designed for reliable low-power switching in modern electronic applications. Featuring a Form 2C (DPDT / 2c/o) contact arrangement, this relay provides dependable dual-circuit switching while maintaining a miniature footprint ideal for high-density PCB layouts.

This relay operates with a 3VDC coil and 90 coil resistance, utilizing a single-coil latching mechanism that retains its switching position without continuous power consumption. This energy-efficient design makes it ideal for battery-powered systems, portable electronics, and low-power automation circuits.

The relay supports switching loads up to 2A at 30VDC and 0.5A at 125VAC (250VAC max), making it suitable for both AC and DC control applications. Its gold flash contacts provide excellent conductivity, low contact resistance, and reliable long-term performance for sensitive signal and control switching.

Designed with a sealed surface-mount (SMD) package, the HFD4-3-LSR offers improved resistance to dust and contamination while enabling efficient automated PCB assembly. Its compact construction makes it ideal for applications where space-saving and reliability are critical.

Features

Form 2C (DPDT / 2c/o) latching relay

Single-coil latching mechanism for reduced power consumption

Compact subminiature sealed SMD design

3VDC coil operation with 90 resistance

Gold flash contacts for stable switching performance

Supports 2A at 30VDC and 0.5A at 125VAC

Surface-mount termination for automated PCB assembly

Sealed housing for enhanced durability and protection

Specifications

Model: HFD4-3-LSR

Brand: Hongfa

Device Type: Subminiature Sealed Surface Mount Latching Relay

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

Termination: SMD

Coil Rated Voltage: 3VDC

Coil Resistance: 90

Coil Type: Single Coil Latching

Electrical Rating:

2A at 30VDC

0.5A at 125VAC

250VAC Max

Contact Material: Gold Flash Contacts

AC/DC Voltage: DC

Applications

Surface-mount PCB switching systems

Battery-powered and portable electronics

Embedded control systems

Industrial automation equipment

Signal routing and low-power switching circuits

The HFD4-3-LSR combines compact SMD mounting, energy-efficient latching operation, and dependable sealed performance, making it an excellent relay solution for advanced miniature electronic applications.

What's in the box
1 x HFD4-3-LSR Signal Subminiature Mini Sealed Surface Mount 1-Coil Latching Relay 3VDC DPDT