9 Apr
2012
9 Apr
'12
10:52 a.m.
I hope I haven't made a mistake here. Rather than
go to Farnell where I need
a minimum order amount, I looked on Ebay and found someone with some TIP125s
there.
I had assumed they were all the same and just chose this one:
http://www.ebay.co.uk/itm/TIP125-Transistor-/290672643190?pt=LH_DefaultDomai
n_3&hash=item43ad708c76.
From what I can see, those are the right parts.
In gneral, if diffenrent manufacturers use the same part numberm the
devices meet the same publsihed specs. A TIP125 from TI is the same as
oen from SGS-Thomson. In a few cases, if you go outside the pnblished
specs, the devices will behave differently, this can be a problem in
things like line output stages (CRT horizotnal output stages), but I don;t
think this will be a problem with a motor driver
The '8702' number is almost certainly a date code. It doesn't matter.
Sometimes you'll find suffix letters on transistor numbers. These either
indicate the approximate current gain (for example the BC109C). or the
maximum voltage it'll withstate (TIP41C) or perhaps soemthing else.
That's when you need to look up the whole number in a databook to find
out just what the versions are. But I don;t think that's a problem here
either.
-tony