# HF49FD/005-1H11TF (Component) ## Description Hongfa Europe GMBH PCB Mount Power Relay, 5V dc Coil, 5A Switching Current, SPS The HF49FD/005-1H11TF is part of the Hongfa HF49FD series, which consists of compact, high-sensitivity power relays. It operates using a 5 V DC coil and provides electrical isolation between the control circuit and the load, allowing low-power signals (e.g., from a microcontroller) to switch higher voltages or currents. Key Characteristics Type: Electromagnetic relay (non-latching) Contact Configuration: SPST-NO (1 Form A, normally open) Coil Voltage: 5 V DC Switching Current: up to 5 A Switching Voltage: 250 VAC 30 VDC Mounting Type: Through-hole / PCB mount Size: ~20 × 5 × 12.5 mm (slim design) Coil Power Consumption: ~120 mW (low power) Dielectric Strength: up to 3 kV isolation Functional Overview Uses a coil + mechanical contacts: When 5 V is applied → coil energizes → contacts close When removed → contacts open Provides electrical isolation between: control side (low voltage) load side (higher voltage/current) #Relay ## Component Details - **Owner:** adrian95 - **Created:** 4/24/2026 - **Last Updated:** 4/24/2026 - **Visibility:** Public - **Part Type:** Relay - **Manufacturer Part Number:** HF49FD/005-1H11TF - **License:** https://creativecommons.org/licenses/by/4.0/ - **Mount:** PCB - **Manufacturer Name:** Hongfa - **Datasheet URL:** https://source.hongfa.com//pdf/web/viewer.html?file=/Uploads/Product/PDF/HF49FD_en.pdf?timestamp=1743412019 - **Part Type:** Electromechanical Components - **MPN:** HF49FD/005-1H11TF - **Mount Type:** PCB - **Package / Case Code:** TO - **Pin Count:** 4 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | COM | | | 2 | NO | | | 3 | COIL_1 | | | 4 | COIL_2 | | --- *Generated from [https://www.flux.ai/adrian95/hf49fd005-1h11tf](https://www.flux.ai/adrian95/hf49fd005-1h11tf)*