CAT# RLY-650
$2.50 each
Panasonic (NAIS) ACT512.
Ultra-small automotive relay with two separate coils and sets of SPDT contacts. Rated 20 Amps. 17.4 x 14 x 13.5mm. 10 terminals. PC leads.
Average Customer Review:  (2 Reviews) Write A Review

Customer Comments

Average Customer Review:  (2 Reviews) Write A Review

A customer from SF Bay, CA
Nice little relay for H-bridges, and very quiet. Coils can be low-end driven with 2N3904 so it's easy to interface to Arduino. Datasheet here: https://www.panasonic-electric-works.com/pew/eu/downloads/ds_61205_en_ct.pdf

A customer from Camarillo, CA
Nice relay but...
However good or bad the relay is, the casual hobbyist will never get 20 amperes carrying capacity from a printed-circuit-mount relay. That's just because of the trace thickness required. Even if you have a board vendor who does six oz/ft2 copper thickness you're still at about a 120 mil wide trace for that current (and most vendors don't go above 2)! Even if you were inclined to try to get 20 amperes continuous current from a quick-connect terminal it would have to be the largest (.250) in the series. I'm not criticizing the relay itself but if you really needed 20 amps I'd be looking for something in a different package that's all. Used for a lower current it's probably fine and looks to be quite compact and cost-effective.