HF3FA-003-ZSTF (136) Sugar Cube Relay 3VDC SPDT 10A Sealed PCB Relay

The HF3FA-003-ZSTF(136) relay from Hongfa is a compact high-power sub-miniature "Sugar Cube" sealed relay designed for reliable PCB switching applications requiring efficient control and high load capability. Featuring a Form 1C (SPDT) contact configuration, this relay provides flexible switching for both normally open and normally closed circuit operation in industrial, commercial, and consumer electronic systems.

Operating on a 3VDC coil with a low 25 coil resistance, the HF3FA-003-ZSTF offers fast and efficient switching performance for low-voltage control circuits, embedded systems, smart devices, appliance controls, and automation electronics. Its compact subminiature footprint makes it ideal for densely populated PCB designs where space-saving installation is important.

The relay supports switching loads up to 10A at 250VAC, 5A at 125VAC, and a maximum switching voltage of 277VAC or 28VDC, making it suitable for controlling lighting systems, motors, power supplies, home appliances, HVAC systems, and industrial control circuits. The sealed construction protects internal contacts from contamination, improving long-term reliability and operational stability.

Built with UL94 V-0 flammability-rated materials and Class F insulation, the HF3FA-003-ZSTF is designed for enhanced electrical safety and thermal durability. The relay is also available in configurations compliant with IEC 60335-1 requirements, making it suitable for appliance-related applications.

Features

High-power sub-mini "Sugar Cube" sealed relay

Form 1C (SPDT) contact configuration

Compact subminiature PCB relay design

3VDC operating coil with 25 resistance

10A switching capacity at 250VAC

5A switching capability at 125VAC

Maximum switching voltage: 277VAC / 28VDC

Sealed construction for improved reliability

Standard PCB layout for easy integration

UL94 V-0 flammability-rated housing

CTI 250 material performance available

Class F insulation system

IEC 60335-1 compatible design availability

Suitable for industrial and appliance applications

Specifications

Model: HF3FA-003-ZSTF(136)

Brand: Hongfa

Device Type: High Power Sub-Mini Sugar Cube Sealed Relay

Contact Form: Form 1C (SPDT)

Coil Rated Voltage: 3VDC

Coil Resistance: 25

Maximum Switching Current: 10A

Electrical Rating: 10A at 250VAC / 5A at 125VAC

Maximum Switching Voltage: 277VAC / 28VDC

Insulation Class: Class F

Flammability Rating: UL94 V-0

Mounting Type: PCB Through-Hole

Construction Type: Sealed

Ideal for appliance controls, smart home devices, HVAC systems, automation equipment, power management circuits, lighting controls, embedded electronics, and compact PCB applications requiring dependable SPDT relay switching with high load capability.

What's in the box
1 x HF3FA-003-ZSTF (136) Sugar Cube Relay 3VDC SPDT 10A Sealed PCB Relay