HFD4/5 Signal Relay – DPDT 2A/250V, 5V Coil, 3ms Switching DIP-8 Industrial Grade
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HFD4/5 Signal Relay | DPDT 2A/250V, 5V Coil, 3ms Switching DIP-8 Industrial Grade
The HFD4/5 is a high-speed DPDT signal relay built for industrial automation, instrumentation, and control circuits where reliable low-power switching matters. With 2A/250V switching capacity, an ultra-fast 3ms response time, and 2.5kV coil-contact isolation, this compact DIP-8 part delivers precise circuit control in space-constrained applications across PLCs, medical devices, and telecom modules.
The 5VDC coil draws only 140mW through its 178Ω winding, AgPd / Au contacts hold their characteristics across more than 100,000 switching cycles, and the closed construction resists dust ingress in workshop and field environments. The standard DIP-8 footprint slots into existing PCB layouts without rework.
3ms Response Time & 2.5kV Isolation — Reliable Switching for Sensitive Electronics
- DPDT (2 Form C) contacts — controls two independent circuits simultaneously.
- 5VDC coil (178Ω) — low 140mW power consumption for energy-efficient designs.
- AgPd/Au contacts — long lifespan (>100,000 cycles) in high-frequency switching.
- 2.5kV coil-contact isolation — prevents leakage in sensitive measurement circuits.
- -40°C to +85°C operation — reliable performance across harsh environments.
Why Engineers Specify This Relay
The 10×6.5mm DIP-8 footprint fits PLC I/O modules, test equipment, and HVAC controls where space is tight. The closed construction and AgPd contacts make the HFD4/5 medical- and industrial-ready — patient monitors, factory automation, CNC machine control panels, safety-interlock circuits in industrial robotics, mode-switching in medical diagnostic equipment, and power routing in telecom base station modules all use this part interchangeably.
HFD4/5 Signal Relay Specifications
| Parameter | Specification |
|---|---|
| Contact Configuration | DPDT (2 Form C) |
| Contact Rating | 2A @ 250VAC / 220VDC |
| Coil Voltage | 5VDC (178Ω) |
| Switching Time | 3ms (typical) |
| Isolation Voltage | 2.5kV (coil-contact) |
| Operating Temperature | -40°C to +85°C |
| Package | DIP-8 (10×6.5mm) |
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Need HFD4/5 relays in tray quantities for industrial production? Email contact@lys-sz.com for bulk pricing and lead times. Worldwide shipping from our Shenzhen warehouse.
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