The HF49FD/005-1H11B(257) is a latching relay manufactured by HongFa. This relay is designed to maintain its contact position even after the coil voltage is removed, making it suitable for applications requiring memory or low power consumption in the holding state. Its compact size and reliable operation make it a versatile component for various electronic systems.

Applications:

• Energy management systems
• Remote control systems
• Lighting control
• Battery-powered devices
• Metering equipment

Features:

• Latching relay (bi-stable)
• Contact form: DPDT (Double Pole Double Throw)
• Contact rating: 2A at 30VDC
• Coil voltage: 5VDC
• Low power consumption
• Compact size
• RoHS compliant

Benefits:

• Latching function reduces power consumption by eliminating the need for continuous coil energization.
• Compact size allows for high-density mounting in space-constrained applications.
• DPDT contact configuration provides flexible switching options for various circuit designs.
• Reliable switching performance ensures consistent operation of connected devices.
• RoHS compliance ensures environmental responsibility.

Additional Details:

The 'HF49FD' series relays are designed for latching applications. The '005' indicates a 5VDC coil voltage. '1H11B' likely refers to a specific coil sensitivity or terminal configuration. (257) may be a production batch number or date code. Latching relays are valuable where holding a state with minimal power usage is crucial. They are switched from one state to the other via a pulse of current, and remain in that state until another pulse changes it.

Technical Specifications:

Contact Resistance: 100 mOhm (max)
Operate Time: 8ms (max)
Release Time: 4ms (max)
Insulation Resistance: 1000 MOhm (min) at 500VDC
Dielectric Strength: 750VAC between contacts; 1000VAC between coil and contacts
Operating Temperature: -40°C to +85°C
Weight: Approximately 5g