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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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I can’t see the faces of actual parts well enough to read. The reference is from both the parts list and schematic of Kenwood KR What does the A suffix mean? Then I heard another brief cut-out. 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. It is always purely related to higher voltage, not to higher current rating.

Thanks again to all Discussion in ‘ Solid State ‘ started by roger2Aug 1, But I 2sa33 take some live readings, they were pretty close to what the schematic shows.

I appreciate the time you put into researching this. I have seen the term “cascoded” many times, just never seemed to have time to look it up. Good to know about the existence of those Japanese transistor data books too.

Now I know what it means, and the parts choices made by Kenwood make more sense based on your description. Here is L channel, R is almost the same: Do you already dayasheet an account? It does show Q and P as being hfe ranges. But it has most things that are not too obscure. Share This Page Tweet. They both had “halo” cracks in their solder joints. Inquiring minds want to know things. When Datasheft say in series I mean that the collector of the 2saA connects directly to the emitter of the 2sa JURBAug 2, But I don’t see it on any of the A spec sheets.


I was looking all over the web for 2saA with no luck: You must log in or sign up to reply here. 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.

Your name or email address: JURB – Thanks for the detailed explanation of transistor designations. They are also in series? I have had a look around datashet this, trying to find references to the 2SAA as distinct from the 2SA and can’t find anything worthy of note.

Turns out there was a 2scA, at least briefly. They Kenwood did the same thing in the kr manual. I checked DC voltages and found a fairly close match to what is shown on the schematic, slightly higher but everything in correct relative proportions. On the face it says: The red voltage markings on the schema are by Kenwood. I poked around for a few hours, and could find no reference to the meaning of the A suffix. In any case, a mystery is solved, and I have learned a few things here.


Just replace with ksa and call it datashee day.

Datasheet «2SA733»

Actually I found that one OK, just couldn’t find anything for the A version. I’m sure it is not as good as those professional trade manuals that you have. After the reflow it straightened up almost completely ZOOMAug 2, Is this transistor in a high gain position? HyperionAug 2, I am hesitant to remove them because I have already reflowed once.

Datsaheet downloaded the 2SA data sheet but it does not mention the A. In several previous repair jobs, I failed to find the datasheets of such A version though. One channel was intermittent. I actually had the datasheet for it on my PC.

2SA Datasheet(PDF) – Tiger Electronic Co.,Ltd

Yes, my password is: The “A” suffix usually designates a higher voltage rating. Here is the left channel of KR It is written just like in my OP.

Where did you come up with a 2SAA? No, create an account now.