Hongfa HFD3 2A Subminiature PCB Mount Signal Relays DPDT – Hongfa HFD3/012, A subminiature PCB signal relay with a 12V DC coil, switching capacity of 2A and a DPDT contact configuration. The relay is of the Single Side Stable (SSS) type and has through hole terminals. Hongfa HFD3/012 PCB Signal Relay 12V DC Coil DPDT 2A