2SA968 DATASHEET PDF

December 23, 2019   |   by admin

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It’s rare to find any Sankens that are NOT counterfeit parts these days. Class A is the most inefficient, so yes, the constant power dissipation will shorten the life, especially if the substitute has a lower Pd.

Shorted outputs, shorted drivers and pre drivers. Most Active Forum Topics this week The output transistors appear to be original Sanken RETs. Obviously, certain critical parameters have to be met, but even then, operating something close the edge could still lead to early failures.

(PDF) 2SA968 Datasheet download

Every rebuild of this magnitude comes with a mandatory recap. My biggest concern is having the amplifier come back a month later because datasheet parts didn’t last. So it is up to the characteristics being audio-friendly. Parts Express has the NTE parts. Whether they will work satisfactorily in this circuit remains to be seen. Something in the back of my mind tells me I should have firmly turned down this job.

2SA Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

In audio applications, the fT won’t make a difference. I think the op simply wants the exact same components. Anonb to shdesigns Anon Jun-7 3: Anon6f72b Anon Jun-8 3: Went to an MJ, and they lasted a tad over 10 years.

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The O and Y are grades, as another person mentioned above. The pre drivers, 2SC and 2SA are proving to be even more elusive than the drivers! I told him it’s not worth more than a grand in non-working condition, but he was unable to negotiate cheaper and badly wants this receiver. That was troublesome even 30 years ago!

Yeah, I’ve seen the 6. Replacing them with 10V caps solved the issues. Anonb Anon Jun-8 Anonb Anon Jun-6 9: Some of the alternatives are not that great lower SOA, current rating, etc. Anon6f72b to Anonb Anon Jun-7 1: I think it ran right at the limit of current. There are people that argue that matching isn’t critical if emitter resistors are employed.

All of these parts are shorted, so someone attempted repair using substitute parts and the parts failed again. The fT is lower than original, but that should not present a problem. I’m not comfortable with this situation, but he’s a regular customer and I don’t want any bad blood for refusing to work with him on this one.

Repairing a Sansui G Some circuits were very specific on the characteristics of the part.

2SA 데이터시트(PDF) – List of Unclassifed Manufacturers

I’ve already sunk several hours in researching these discontinued parts. They really 2sz968 made of unobtainium! A little too close for comfort on the spec. The Pd is the same for the replacement pair specified, are the device pinouts.

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I can’t even find a datasheet for 2SC on the web. Remember when they used to be ECG. The substitute parts have a higher Ic, as well. Anonb Anon Jun-7 The other option is to go with all NTE parts, at the risk of investing parts and labor, only to have it sound bad, or worse, blow up again.

None of which give me a whole lot of peace of mind though. Octopart says no datasheet found and they ask to submit a quote request. Dear Comcast, I won’t use your email service The originals are 25W dissipation, while the substitutes are 20W dissipation.

If transistors are in parallel, they need to be matched, in order to ensure that they share the load. Were the replacements matched?

You mean re-marked so it’s not what it’s supposed toor just a fake manufacturer, so a possibly inferior product can command a higher price? Then again, this was around 10 years ago and earlier.

I purchased transistors from Mouser and spend an hour grading and marking them all. Anonb Anon Jun-7 5: There is evidence that the Darlington pairs had been replaced with substitutes fresh solder, part numbers differ from schema. Of course transistors have many more crucial parameters than caps, and sometimes one has to compromise when the original part is made of unobtainium.