Quick question - would it be advisable to sub a NTE128P for a ZTX450? Looks like meets/exceeds ZTX450, but EBC instead of CBE...
Vcbo - 100v
Vceo 80V
Vebo 5V
Ic 1A
Pd 850mW
hfe 100 min
ft 50MHz Min
I have a few of the NTE128P left over, otherwise I would just buy the ZTX450...
Thanks
Vcbo - 100v
Vceo 80V
Vebo 5V
Ic 1A
Pd 850mW
hfe 100 min
ft 50MHz Min
I have a few of the NTE128P left over, otherwise I would just buy the ZTX450...
Thanks
Honestly, I don't trust NTE replacement parts. I've had some supposedly "same" parts that most definitely weren't. Worse yet, the NTE parts are frequently more expensive than better quality parts.
Grey
Grey
One story of many:
Once upon a time there was a parts store here in town that I would stop by on the way into work. They were more expensive than Mouser or Digikey, but I could pick up parts and try them that night or the next day instead of having to wait a week for things to come in.
Back when I was building my main tube amps, I pulled together a high voltage regulator. Did the PCB artwork and did a run of six or eight boards so I could regulate the various things in the amp. The prototype worked well enough--with an NTE part I'd bought downtown as the pass device--so I decided to grab a few more and keep all the regulators the same.
I'll keep it short by omitting all the intermediate steps as I tracked down the problem, but the upshot was that roughly two-thirds of the "same" NTE parts oscillated--the remaining one-third sat there calmly doing their job. I had lucked upon one of the non-oscillating parts for the prototype, but duplicating those results was just about impossible.
I have very little good to say about NTE.
Grey
Once upon a time there was a parts store here in town that I would stop by on the way into work. They were more expensive than Mouser or Digikey, but I could pick up parts and try them that night or the next day instead of having to wait a week for things to come in.
Back when I was building my main tube amps, I pulled together a high voltage regulator. Did the PCB artwork and did a run of six or eight boards so I could regulate the various things in the amp. The prototype worked well enough--with an NTE part I'd bought downtown as the pass device--so I decided to grab a few more and keep all the regulators the same.
I'll keep it short by omitting all the intermediate steps as I tracked down the problem, but the upshot was that roughly two-thirds of the "same" NTE parts oscillated--the remaining one-third sat there calmly doing their job. I had lucked upon one of the non-oscillating parts for the prototype, but duplicating those results was just about impossible.
I have very little good to say about NTE.
Grey
- Status
- Not open for further replies.