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Small Signal Relays - Alternatives

The RedRoo amplifier uses two signal-relays to switch between the two RCA inputs and the Bluetooth input. This avoids having to hand wire a conventional input selector switch, and terminate a lot of hand wired shielded cable. 

Compared to larger power relays, signal relays offer superior contact reliability with a small signals, due to the structure of the relay and the switching contact material.

The relay specified is: KEMET EC2-12NU  The Digikey part number is 399-11029-5-ND

We chose the particular small signal relay mainly because the pin footprint does not allow it it to be soldered-in backwards.

A slightly more expensive alternative is : TE Connectivity V23079A1003B301   Digikey part PB289-ND



 

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