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Re: 7904 transistors


 

2N6308s are available from US Distributors, do a google search. I found at least three vendors, and the ubiquitous Chinese on Ebay.

--- In TekScopes@..., Christopher Hilton-Johnson <chj@...> wrote:

oops finger trouble: for 2N6300 read 2N6308 - apologies

On 30/06/2013 21:37, Christopher Hilton-Johnson wrote:

Tony
151-0368-00 are commonly used in the 'hi-efficiency' 7K series PSU.
This translates to the 2N6300, recently available from Ebay (china
source).
In some mainframes, where higher power is required, (eg 7844) Tek
'selected' the 2N6300 and called it a 151-0386-01. Sphere lists the
-01 version as MJ13015. There are 3 available on Ebay now for $19+ (&
same vendor has more from time to time).
In my experience the China parts are iffy, the MJ13015 works fine.

Chris HJ

On 30/06/2013 19:14, atonizzo wrote:

Hi:

I am fixing a 7904 that has a busted power supply.
Both inverter transistors (Q1234 and Q1241) are busted
due to a connection to 240V while setup for 115V.

The transistors are Motorola 151-03-6800 and I will be
looking around for a replacement of the same kind, but
I was also wondering if anybody has has any success
trying more modern replacements for these parts.

Any suggestion about similar parts would be appreciated.

Regards
Tony

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