Need help on replacement transistors

[Bimphert]

Hello all, I'm looking for some suggestions on possible/suitable replacements for RCA 40409 / 40410 complimentary drivers. The only data I have on them is .7(Ic)/90V - TO-39 case.

They came "welded" to square heatsinks. I can probably re-use the old sinks but am looking for the transistor replacements (same case and same pin-out).

Any help/assistance is appreciated!


Thanks;


B-

 

[century tek]

Have you tried googling them?

 

[elnaldo]

HI,

Try this site: It's an on-line transistor and replacements finder.

The site is in spanish: you need to search for your transistor (Busca un transistor:), then choose from the found items (Resultados de su búsqueda >> Ver ficha), and the suggested replacements appear at the bottom (Equivalencias). Then you can go to www.alldatasheet.com , compare specs, and choose the better match.

(http://www.reparacionlcd.com/transtandar.php)

The site suggest**BD 139, BD 230, BD 529, BD 829.

(No affiliation)

 

[PacificStereo]

See your PM.

 

[SolderIron]

You can replace them with the plastic to-220 case transistors. Just put a small heat sink on them.

 

[Bimphert]

Have you tried googling them?

Ummm, Yeah! That was the first thing I did! Problem is, I found about 15 different "answers" from people/sites I don't know or trust (to be perfectly honest).


I figured that if I asked here, I could at least trust the advice/suggestions.

HI,Try this site: It's an on-line transistor and replacements finder.The site is in spanishhttp://www.reparacionlcd.com/transtandar.php)

The site suggest**BD 139, BD 230, BD 529, BD 829.

Yeah, thanks elnaldo.... I've actually used that site before.... it looks extremely helpful.... if I only knew how to read/speak Spanish!!! :yes:




Thanks;


B-

 

[BinaryMike]

I have used 2N3440 and 2N5415 as replacements, but that was several years ago and I don't recall equipment brands/models. These transistor types are still available, if you wanna give 'em a try, but it's a pain to attach heatsinks unless you get the right hardware. I see that Mouser has some stock.

 

[sregor]

Second the 2n3440 and 2n5415. Used in almost all the Hafler amplifiers. Equal or better specs - 1A 200 Volt. Same case and pin out. Just need the heat sink, which is what you wanted to do in the first place.

 

[Bimphert]

I have used 2N3440 and 2N5415 as replacements, but that was several years ago and I don't recall equipment brands/models. These transistor types are still available, if you wanna give 'em a try, but it's a pain to attach heatsinks unless you get the right hardware. I see that Mouser has some stock.

Second the 2n3440 and 2n5415. Used in almost all the Hafler amplifiers. Equal or better specs - 1A 200 Volt. Same case and pin out. Just need the heat sink, which is what you wanted to do in the first place.

Thanks for the suggestions.... I will give them a try. I managed to get some original RCA's but will purchase the one's you suggested for back-up!

Thanks; :thmbsp:


B-



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