The HF49FD/005-1H12(257) is a miniature automotive relay manufactured by HongFa, designed for use in automotive applications where reliability and environmental resistance are critical. The '(257)' suffix likely denotes a manufacturing date code or specific production batch.

Applications

• Automotive Lighting: Used for switching headlights, taillights, and other exterior lighting systems.
• Automotive Power Distribution: Employed in power distribution modules for switching power to various circuits.
• Automotive Motor Control: Utilized for controlling motors such as those for power windows, power door locks, and windshield wipers.
• Automotive Fuel Systems: Used for controlling fuel pumps and other fuel system components.
• Automotive HVAC Systems: Employed in automotive heating, ventilation, and air conditioning systems for controlling compressors and fans.

Features

• Miniature Size: Compact design allows for integration into automotive electronic control units (ECUs).
• High Switching Capacity: Capable of switching automotive loads.
• Low Coil Power Consumption: Reduces power consumption in automotive electrical systems.
• Contact Form: 1H12 designates a specific contact configuration and material, which will be detailed in the datasheet.
• High Insulation Resistance: Provides electrical isolation between coil and contacts.
• Wide Operating Temperature Range: Designed to operate in the harsh temperature conditions found in automotive environments.
• Sealed Construction: Offers protection against dust and moisture.

Benefits

• Reliable Performance: Ensures consistent and dependable operation in demanding automotive applications.
• Compact Design: Allows for integration into space-constrained automotive ECUs.
• Environmental Resistance: Withstands harsh temperature and environmental conditions.
• Cost Effective: Provides a balance of performance and price for automotive applications.

Additional Details

This automotive relay operates with a 5VDC coil (005). For complete technical specifications, including contact ratings (both current and voltage AC/DC), coil resistance, operate and release times, insulation resistance, and applicable automotive certifications, it is essential to consult the official HongFa HF49FD series datasheet. The 1H12 designation describes the contact characteristics of the relay, which must be considered for proper function with the intended load. Also check the datasheet for environmental operating conditions and mechanical dimensions.