i have a bunch of parts that look like power transistors but i'm not sure i look up using the #s online but yet to find some hswc 2scf4242 gft sec 604 c2335-r the priveus ones were on heatsinks so i'm thnking shockety or vreg not sure though another looks like an old metal case transistor. has A23, 380-3, 449 on it. a saw a pic of a traic that looked just like this too though. the lastic holder has a B and an E by 2 terminals. and it has a resistor between these then the E terminal has a ceramic cap and a part that apears to be a diode going to a screw holding it on. what do you think this is? i was guesing transitor but where's the colector? or is the case th colector. i pull these type parts alot and i'm getting tired of having to google every one. i try to use all data sheets but they only have about 60% of them. do the numbers mean anything. E.G. 111-444 mean it is a transistor. then 555-888 is a voltage vegulator. or do i just need to look them up?