The HFD31/12(257) is a signal relay manufactured by HongFa. It is designed for applications requiring reliable switching of low-level signals with a compact form factor.

Applications

• Telecommunications equipment: Used in telephone exchanges, data communication systems, and other telecom equipment for signal routing and switching.
• Instrumentation: Employed in test and measurement equipment, such as oscilloscopes and multimeters, for signal selection and control.
• Control systems: Integrated into industrial control systems and automation equipment for signal switching.
• Security systems: Used in alarm systems, access control systems, and other security equipment for signal switching and control.
• Medical equipment: Found in medical devices for signal routing and control.

Features

• Miniature size: Compact design allows for high-density mounting on printed circuit boards (PCBs).
• High sensitivity: Requires minimal coil power for activation.
• Low coil power consumption: Energy-efficient design suitable for battery-powered applications.
• High insulation resistance: Ensures electrical isolation between the coil and contacts.
• Long life expectancy: Designed for reliable performance over a long operational lifespan.
• Sealed construction: Protects the relay from dust, moisture, and other contaminants.
• RoHS compliant: Complies with the Restriction of Hazardous Substances (RoHS) directive.

Benefits

• Reliable signal switching: Provides consistent and dependable switching performance for low-level signals.
• Space-saving design: Miniature size allows for efficient use of PCB space.
• Low power consumption: Suitable for battery-powered applications.
• Easy integration: Designed for easy installation and connection in electronic circuits.
• Versatile: Suitable for a wide range of signal switching applications.

Additional Details

The coil voltage for this specific relay is 12VDC. The '257' portion of the part number likely refers to specific internal configurations or manufacturing codes. Refer to the HongFa datasheet for the HFD31 series for detailed specifications, including contact ratings, coil resistance, operating temperature range, and safety certifications.