One way to tell an FET from anything else is to see if most of the pads are tied together. On Wed, Mar 6, 2013 at 10:22 AM, John Coppens wrote: > On Tue, 5 Mar 2013 23:21:43 -0000 > lee@baudalign.com wrote: > > > The SMD chip in question has six legs (3 a side), and appears to be > marked > > as "52C45", but I turn up absolutely nothing in my searches. Haven't > been > > able to get a photo yet as my phone's macro wasn't up to the challenge; > > could try with my "proper" camera at a later stage if required. Packag= e > > is probably SOT-26, but mainly trying to determine what the chip is, wh= at > > it does, and whether replacing it could fix the board. > > There are a series of PWM modulator chips which have very similar names. > They > contain the complete PWM modulator with a mosfet output stage. Check the > Micrel.com website. > > John > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=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 .