Searching for transistors on Mouser
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PTL-Pioneer
Super Member
Ksc1815 for the 536. From searching the forum, no idea if it is truly suitable as I hear it is fully dependent on multiple other factors I don't really understand.
It is best to say what they are used on and where they are located, ie. assembly number and reference designators
You can not expect Mouser to support/sub Japanese transistors from the 1970's those numbers are very old,
Although did you even ask Mouser support, they are very helpful, may be of some help.
it is best to get the data sheets if you can for those devices, match up form,fit,function, knowing the Vce max, Ic max, package, ft, Pd(power dissipation) etc
You can not expect Mouser to support/sub Japanese transistors from the 1970's those numbers are very old,
Although did you even ask Mouser support, they are very helpful, may be of some help.
it is best to get the data sheets if you can for those devices, match up form,fit,function, knowing the Vce max, Ic max, package, ft, Pd(power dissipation) etc
2SA545 → KSA1013
2SC853 → BD139
2SC536 → KSC945
Mouser will laugh you off the phone. It's not their job to cross-reference 40 to 50 year old transistors.
2SC853 → BD139
2SC536 → KSC945
Mouser will laugh you off the phone. It's not their job to cross-reference 40 to 50 year old transistors.
Ylli
Super Member
There is always https://alltransistors.com. Gives you some place to start anyway.
You bet.
I have a personal cross reference sheet that I've compiled.
Many times what I do is Google said transistor and Audiokarma - e.g. 2SC536 audiokarma. Then I go thread digging and reading.
beware, check for lead config, you want ksc945c for center collector lead pinning version to match the specs I just looked up.
Oldsansui441
Super Member
Where are these being used? I think 2SC853 and 2SA545 are a complementary pair.
Oops yes sorry. Good catch.
Oldsansui441
Super Member
Hi, l assume a DCX-2300. If you are talking about the driver transistors at TR405-TR408 they should be a complementary pair.
Yes, sorry, the DCX-2300.
I have found that one of the 2SC853 is bad.
So should get a set of BD139 and KSA1013 ?
petehall347
the brandy coffee man
bd139 bd140 go together .
Oldsansui441
Super Member
As the other guys have said, you can use BD139/140 pairs, KSA1013/KSC2383 pairs or KSA1220A/KSC2690A pairs. If using the TO-126's you may have to enlarge holes in original traces carefully with a 1mm drill bit.
