HFD42-4.5-3 Signal Subminiature Mini Sealed Relay 4.5VDC DPDT

The HFD42-4.5-3 is a compact subminiature sealed signal relay engineered for dependable switching performance in space-sensitive electronic applications. Featuring a Form 2C (DPDT / 2c/o) contact configuration, this relay enables reliable control of dual circuits while maintaining a small PCB footprint.

Designed with a 4.5VDC coil and a 145 coil resistance, the relay offers stable operation and efficient switching performance for low-voltage electronic systems. Its gold flash contacts provide excellent conductivity, low contact resistance, and improved durability, ensuring consistent signal integrity and long operational life.

The relay is rated for 1A at 30VDC and 0.5A at 125VAC (250VAC max), making it suitable for both AC and DC signal switching applications. Its sealed construction protects the internal mechanism from dust and environmental contamination, improving reliability in industrial, communication, and embedded electronic environments.

Features

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

Compact subminiature sealed construction

4.5VDC coil operation for low-voltage systems

145 coil resistance for efficient switching

Gold flash contacts for stable conductivity and reliability

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

Sealed housing for enhanced durability and protection

Specifications

Model: HFD42-4.5-3

Brand: Hongfa

Device Type: Subminiature Sealed Relay

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

Coil Rated Voltage: 4.5VDC

Coil Resistance: 145

Electrical Rating:

1A at 30VDC

0.5A at 125VAC

250VAC Max

Contact Material: Gold Flash Contacts

AC/DC Voltage: DC

Applications

Industrial control and automation systems

Communication and telecom equipment

Embedded electronics and PCB switching

Signal routing and low-power control circuits

Compact electronic devices requiring reliable relay switching

The HFD42-4.5-3 delivers compact size, dependable sealed construction, and reliable low-voltage switching performance, making it an ideal solution for modern electronic control applications.

What's in the box
1 x HFD42-4.5-3 Signal Subminiature Mini Sealed Relay 4.5VDC DPDT