HFD42-3-L13SR Signal Subminiature Mini Sealed Surface Mount1-Coil Latching

The HFD42-3-L13SR is a compact subminiature sealed surface-mount (SMD) latching relay designed for reliable low-power switching in space-constrained electronic applications. Featuring a Form 2C (DPDT / 2c/o) contact configuration, this relay provides dependable dual-circuit switching while maintaining a minimal PCB footprint.

This relay operates with a 3VDC coil and utilizes a single-coil latching mechanism, allowing it to retain its switching position without continuous power consumption. This energy-efficient design makes it ideal for battery-powered devices, automation systems, and memory-state control applications.

Its gold flash contacts ensure excellent conductivity, low contact resistance, and stable long-term signal performance. Rated for 1A at 30VDC and 0.5A at 125VAC (250VAC max), the relay is suitable for both AC and DC signal switching tasks.

The sealed SMD housing helps protect the internal components from dust and contamination, improving durability and reliability in industrial and embedded environments. Its surface-mount construction also simplifies automated PCB assembly processes for modern electronics manufacturing.

Features

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

Single-coil latching design for reduced power consumption

Compact surface-mount (SMD) package

3VDC low-voltage operation

Gold flash contacts for reliable signal switching

Supports 1A at 30VDC and 0.5A at 125VAC (250VAC Max)

Sealed housing for enhanced environmental protection

Ideal for automated PCB assembly applications

Specifications

Model: HFD42-3-L13SR

Brand: Hongfa

Device Type: Subminiature Sealed Surface Mount Latching Relay

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

Termination: SMD

Coil Rated Voltage: 3VDC

Coil Type: Single Coil Latching

Electrical Rating:

1A 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 devices

Industrial automation and smart controls

Embedded electronics and communication equipment

Energy-efficient memory-state switching circuits

The HFD42-3-L13SR combines compact SMD mounting, low-power latching functionality, and reliable gold flash contacts, making it an excellent solution for modern electronic switching applications.

What's in the box
1 x HFD42-3-L13SR Signal Subminiature Mini Sealed Surface Mount (SMD) 1-Coil Latching Relay 3VDC DPDT