[sdiy] selecting a semiconductor manufacturer

[Roy J. Tellason]

On Tuesday 17 May 2005 11:46 pm, harrybissell wrote:
> and adding that
>
> if a = b and a = c then b = c
>
> you can use the NTE crosses to replace one transistor
> with another  (non NTE part)
>
> sometimes...
>
> if you are careful...    ;^P
>
> H^) harry

Not always!

More often than not the replacement part listed will _exceed_ the specs on one 
or more of the parts that it replaces,  so it's really more likely to be a 
matter of a > b _and a > c and you can't count on b = c,  not at all...

> Paul Perry wrote:
> > Some NTE parts are exact matches for what they are supposed to
> > replace(in fact, they are the SAME component, relabelled & marked up
> > xxx%).Others are 'kind of close' spec wise. Remember they are intended
> > forrepair guys, and (one hopes) if a replacement transistor isn't
> > quite exact,maybe the repair guy can tweak something to get it
> > going.Working bacvkwards, you can see a whole bunch of 'non-identical
> > butclose' parts are crossed to the same NTE part. What IS invaluable,
> > is the NTE book that shows the pinouts! paul perry Melbourne Australia