HF5F-3-ZSTF Super-Mini Sugar Cube Sealed Relay 3VDC SPDT 6A PCB Relay

The HF5F-3-ZSTF relay from Hongfa is a compact medium-power super-mini "Sugar Cube" sealed relay designed for reliable switching in space-constrained electronic applications. Ideal for embedded systems, appliance controls, automation equipment, alarm systems, and compact PCB assemblies, this relay delivers dependable performance in a small footprint.

Featuring a Form 1C (SPDT / 1c/o) contact configuration, the HF5F-3-ZSTF supports flexible switching between normally open and normally closed circuits, making it suitable for both signal and load control applications. Its low-voltage 3VDC coil operation makes it particularly useful in battery-powered devices, low-voltage controllers, microcontroller circuits, and portable electronics.

The relay supports switching loads up to 6A/5A at 250VAC or 28VDC, with a maximum switching voltage of 277VAC/28VDC. This capability makes it suitable for lighting systems, appliance switching, low-power motors, industrial controls, and general-purpose electronic switching applications.

Its sealed construction protects internal contacts and components from dust, flux, and moisture contamination during PCB assembly and long-term operation. Designed with Class F insulation and rated for ambient temperatures up to 105 C, the relay offers strong thermal stability and reliable operation in demanding environments.

Features

Super-mini "Sugar Cube" sealed relay

Compact PCB relay for space-constrained applications

Form 1C (SPDT / 1c/o) contact configuration

Low-voltage 3VDC coil operation

20 coil resistance

6A/5A switching capability

Maximum switching voltage up to 277VAC / 28VDC

Sealed housing for environmental protection

Class F insulation system

Maximum ambient operating temperature of 105 C

Reliable switching performance for industrial and consumer electronics

Specifications

Model: HF5F-3-ZSTF

Brand: Hongfa

Device Type: Super-Mini Sugar Cube Sealed Relay

Contact Form: Form 1C (SPDT / 1c/o)

Termination Type: PCB Through-Hole

Coil Rated Voltage: 3VDC

AC/DC Voltage: DC

Electrical Rating: 6A/5A at 250VAC / 28VDC

Maximum Switching Voltage: 277VAC / 28VDC

Coil Resistance: 20

Insulation Class: Class F

Maximum Ambient Temperature: 105 C

Ideal for embedded electronics, automation modules, smart devices, appliance control systems, alarm equipment, timers, battery-powered systems, and compact PCB applications requiring reliable low-voltage SPDT relay switching in a durable sealed package.

What's in the box
1 x HF5F-3-ZSTF Super-Mini Sugar Cube Sealed Relay 3VDC SPDT 6A PCB Relay