HONGFA HFD31/24

Mfr. Part

HFD31/24

Manufacturer

HONGFA

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Detailed Description

HFD31/24 is a HONGFA HFD31 series component with a 24 V coil option. It is commonly used as a compact, PCB-mounted signal/power relay in low-voltage control circuits. Many catalog systems list it under Specialized ICs, but it is an electromechanical relay series. Current stock availability is 4300 units with date code 2021+. Package and case reference is 607. For exact electrical ratings, pin layout, and mechanical dimensions, please confirm with the official datasheet on our website

Key Features

24 V DC coil option in the HFD31 series

Compact, PCB-mount form factor for dense layouts

Sealed plastic housing for protection against flux and dust in standard variants

Low coil power design suitable for battery-powered control and signal switching

Typical contact forms available in the series include SPDT or DPDT depending on sub-variant

RoHS-compliant construction in most current builds

Stable switching performance and long mechanical life when used within rated limits

Package code 607 for consistent footprint management

Key Advantages

Small size saves PCB space and simplifies layout

24 V coil voltage integrates easily into industrial control and automation systems

Sealed construction supports automated soldering and reduces contamination risk

Reliable brand support from HONGFA with broad ecosystem compatibility

Backed by Y-IC’s quality distribution, rapid fulfillment, and technical support

Packaging

Type: PCB-mount electromechanical relay from the HFD31 series

Material: Molded plastic case with metal lead terminals, internal coil and contact set

Size: Compact low-profile case; refer to HFD31 case drawing for length, width, and height

Pin configuration: Standard HFD31 footprint; typical layouts support SPDT or DPDT contact arrangements; verify pin numbering and coil pins in the datasheet

Thermal characteristics: Designed for operation across common industrial ambient ranges; derating applies near upper limits; exact operating temperature range to be verified in the datasheet

Electrical properties: 24 V DC coil; coil resistance, pull-in voltage, drop-out voltage, and contact ratings depend on exact HFD31 sub-variant; verify current, voltage, and load types in the datasheet

Package or case reference: 607

Shipping format: Common formats include tray or tube packs for PCB relays; bulk packaging may be available depending on lot; confirm on order

Lifecycle

Current status: No public end-of-life notice found for the HFD31 series based on general market knowledge; date code 2021+ indicates recent manufacture

Nearing discontinuation: Not known to be near discontinuation at this time

Equivalent or alternative models available: Depending on required contact form, coil voltage, footprint, and ratings, consider Omron G5V-2 or G6A series, Panasonic TQ/TQ2 series, TE Connectivity IM or Axicom signal relay series, and similar compact PCB signal relays from reputable brands. Always verify coil voltage, contact rating, pin layout, footprint, and approvals against your exact HFD31/24 requirements

If an exact equivalent is not identified here, please contact our sales team via our website for a tailored cross-reference and availability

Key Application Areas

Industrial control panels and PLC interface boards

Instrumentation and measurement equipment

Communication and networking hardware for signal routing

HVAC control, building automation, and safety interlocks

Consumer and office electronics requiring low-power switching

Automotive auxiliary modules and 24 V systems when ratings match and approvals are met

Datasheet

Our website hosts the most authoritative datasheet for HFD31/24. We recommend downloading the datasheet on this page to confirm exact electrical ratings, mechanical dimensions, pin configuration, and compliance information

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