At 11:21 PM 8/8/2015, you wrote: >Hi all, > >I've got 12VDC geared motors here which a client wants to use in >his product I have my doubts about the ability of a DIL (typically contact rating is no= t more than 2A) relay to handle this job. Surge current on startup will be hi= gh. It's possible you could make it work by incorporating a small=20 MOSFET/catch diode to actually switch the juice and just use the relay to steer the current. Maybe put a bidirectional TVS across the motor for luck. But if the internal contact arrangement is too wimpy the heating from the s= urge in current may eventually kill the relay even though it is not=20 switching the motor. Frankly, I'd suggest finding the room for 5A-15A relays or going=20 H-bridge. Even carry current on DIL relays is not typically rated greater than 2A=20 and you'll see many times that with a 1.5A run current motor. If you use relays within their rating and a MOSFET you can likely get=20 close to the mechanical life out of the relays (more like 10^7 than 10^5 or fewer=20 operations). --sp --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .