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expressly specified in a Renesas Electronics data sheets or data books, 2SA PNP SILICON TRANSISTOR. DATA SHEET. Document No. 2SA datasheet, 2SA pdf, 2SA data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, PNP General Purpose Amplifier. 2SA V, mA. PNP Plastic Encapsulated Transistor. Jan Rev. D. Page 1 of 2 Any changes of specification will.

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But they are only using it as a current limiter, and my opinion is that it doesn’t mean anything, and is just a glitch that got into their computer. Here is L channel, R is almost the same: In several previous repair jobs, I failed to find the datasheets of such A version though.

Inquiring minds want to know things. They are also in series?

2SA / A PNP Transistor | NightFire Electronics LLC

No, create an account now. Your name or email address: If you really need to replace it, just make sure that the voltage between C-B doesn’t exceed 60V, and between C-E doesn’t exceed 50V. It does show Datasyeet and P as being hfe ranges. After the reflow it straightened up almost completely OilmasterAug 2, The red voltage markings on the schema are by Kenwood.


JURB – thanks for taking the time to type in those specs for the non-A 2sa I actually had the datasheet for it on my PC. I poked datahseet for a few hours, and could find no reference to the meaning of the A suffix.

(PDF) 2SA733 Datasheet download

Just replace with ksa and call it a day. JURB – Thanks for the detailed explanation of transistor designations.

The reference is from both the parts list and schematic of Kenwood KR In any case, a mystery is solved, and I have learned a few things here.

They Kenwood did the same thing in the kr manual. But it has most things that are not too obscure. Good to know about the existence of those Japanese transistor data books too. When I say in series I mean that the collector of the 2saA connects directly to the emitter of the 2sa What does the A suffix mean?

The two transistors being discussed are Q15, the 2sa Aand Q17, the 2sa Discussion in ‘ Solid State ‘ started by roger2Aug 1, The “A” suffix usually designates a higher voltage rating. I am hesitant to remove them because I have already reflowed once.


Now I know what it means, and the parts choices made by Kenwood make more sense based on your description. I was looking all over the web for 2saA with no luck: I was able to get a look at one of them with a small lighted magnifier.

You must log in or sign up to reply here. Yes, my password is: It is always purely related to higher voltage, not to higher datzsheet rating. Working on a Kenwood KR receiver and suspect one of these of being bad.

I can’t see the faces of actual parts well enough to read. Highly unlikely to be of much relevance. ZOOM, I am asking what the “A” suffix for 2sa means because I want to know what type of part the designers had in mind for this position in the amp.

Datasheet «2SA733»

The “A” suffix means new and improved. As you pointed out, 2sc is the complement to 2sa, so I would assume that the “A” version of 2sa has similarly increased temperature ratings.

HyperionAug 2,