Hongfa HFD5 Miniature 5th Generation Signal Relay

SKU: HFD5 Categories: , ,

Product specs

Coil Voltage

1.5Vdc, 2.4Vdc, 3Vdc, 5Vdc, 4.5Vdc, 6Vdc, 9Vdc, 12Vdc

Contact Arrangement

DPDT (2CO) -2 Form C

Coil Type

Non Latching, 1 Coil Latching

Contact Rating (Amps)



Fully Sealed

Contact Material

AgNi+Au Plated

Coil Resistance (Ohm)

115.2Ω, 1620Ω, 500Ω, 45Ω, 180Ω, 405Ω, 720Ω, 2880Ω




Signal Relay

Product Description

  • The world’s first 5th generation signal relay
  • Low coil power at 50mW. Coil (5V) operating current ≤10mA. Can be directly driven by a microprocessor.
  • Bifurcated contacts
  • Products compliant with IEC 60079 are available
  • Products compliant with IEC 60335-1 are available
  • Both DIP & SMT types are available
  • Single side stable and latching type available
  • Smallest size in signal relay industry: 9.0(L)×4.8(W)×4.9(H) mm

HONGFA release the world’s first 5th Generation Signal Relay.

Available in DIP or SMT packages, this device with overall dimensions of 9.0(L) x 3.8(W) x 3.9(H)mm is tiny, and perfect for innovative applications in the fields of medical technology, testing, measurement, and inspection equipment.

Compared to the 4th Generation, the HFD5 has a footprint reduction of 34%, and a total weight of ≤ 0.5g reduced by 37%.

  • Low coil power of 50 mW
  • Bifurcated contacts for high contact reliability
  • High mechanical endurance: >100 million ops; >200 million ops version available
  • Smaller moving parts generate less operation noise
  • Monostable and latching coil system
  • THT and SMT versions

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