HFD4-I-12-LSR Signal Sealed SurfaceMount 1Coil Latching High-Load Relay 12V

The HFD4-I-12-LSR is a subminiature sealed surface-mount (SMD) high-load latching relay designed for compact, high-efficiency PCB applications where both load capability and space savings are critical. It features a Form 2C (DPDT / 2c/o) contact configuration, enabling control of two independent circuits within a minimal footprint.

This model uses a single-coil latching mechanism, allowing it to retain its switching state without continuous coil power, significantly reducing energy consumption. This makes it especially suitable for battery-powered systems, smart metering, and low-power automation designs.

Operating at a 12VDC coil voltage with a 1440 coil resistance, the relay supports a maximum switching current of 3A, with surge capability up to 3.5A, ensuring reliable performance even under demanding electrical conditions.

It is rated for 3A at 30VDC and 1A at 125VAC, with a maximum switching voltage of 250VAC / 220VDC, providing versatility across both AC and DC applications. The gold flash contacts ensure excellent conductivity, low contact resistance, and long-term switching stability.

The SMD sealed construction enhances environmental resistance while enabling automated assembly processes, making it ideal for high-volume manufacturing and compact modern electronics.

Features

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

Surface-mount (SMD) sealed construction

Single-coil latching operation (no continuous power required)

High-load switching up to 3A

Surge withstand current up to 3.5A

12VDC coil with 1440 resistance

Low power consumption design

Gold flash contacts for stable signal performance

IEC 60335-1 compliant design suitability

Specifications

Model: HFD4-I-12-LSR

Brand: Hongfa

Device Type: Subminiature Sealed SMD High-Load Latching Relay

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

Termination: SMD

Coil Rated Voltage: 12VDC

Coil Resistance: 1440

Operating Type: Single-Coil Latching

Maximum Switching Current: 3A

Surge Current: up to 3.5A

Electrical Rating:

3A at 30VDC

1A at 125VAC

250VAC / 220VDC max

Contact Material: Gold Flash Contacts

AC/DC Voltage: DC

Applications

High-density PCB control systems

Smart metering and energy systems

Industrial automation modules

Battery-powered switching circuits

Compact embedded control designs

The HFD4-I-12-LSR combines high-load capability, latching efficiency, and SMD space-saving design, making it a strong choice for modern low-power, high-density electronic systems requiring reliable switching performance.

What's in the box
1 x HFD4-I-12-LSR Signal Subminiature Sealed Surface-Mount (SMD) 1-Coil Latching High-Load Relay 12VDC DPDT