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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Datasheet «2SA733»

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. Do you already have an account? Discussion in ‘ Solid State ‘ started by roger2Aug 1, I poked around for a few hours, and could find no reference to the meaning of the A suffix. Thanks again to all Xatasheet is L 2sa733, R is almost the same: My go to for older transistor or semi-conductor info is datasheetarchive.

Inquiring minds want to know things. HyperionAug 2, Also, there is no 2scA, just 2sc which is the normal complement of 2sa As you pointed out, 2sc is the complement to 2sa, so I would assume that the “A” version of 2sa has datasjeet increased temperature ratings. The reference is from both the parts list and schematic of Kenwood KR It is written just like in my OP. Just replace with ksa and call it a day. Where did you come up with a 2SAA?


Dwtasheet have seen the term “cascoded” many times, just never seemed to have time to look it up.

I was looking all over the web for 2saA datahseet no luck: I can’t see the faces of actual parts well enough to read. Then I heard another brief cut-out.

JURB – Thanks for the detailed explanation of transistor designations. I downloaded the 2SA data sheet but it does not mention the A.

If you really need to replace it, just make sure that the voltage between C-B datasbeet exceed 60V, and between C-E doesn’t exceed 50V. I have had a look around for this, trying to find references to the 2SAA as distinct from the 2SA and can’t find anything worthy of note.

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. I appreciate the datawheet you put into researching this.

JURBAug 2, Actually I found that one OK, just couldn’t find anything for the A version. The “A” suffix usually designates a higher voltage rating. When I say in series I mean that the collector of the 2saA connects directly to datasbeet emitter of the 2sa But I don’t see it on any of the A spec sheets.

They both had “halo” cracks in their solder joints. In any case, a mystery is solved, and I have learned a few things here.

what does (A) suffix mean in 2SA (A) (Q,P) ??? | Audiokarma Home Audio Stereo Discussion Forums

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. The red voltage markings on the schema are by Kenwood. On the face it says: It does show Q and P as being hfe ranges.


One channel was intermittent. Share This Page Tweet. After the reflow it straightened up almost completely Here is the left channel of KR What does the A suffix mean?

They Kenwood did the same thing in the kr manual. They are also in series? OilmasterAug 2, It is always purely related to higher datashee, not to higher current rating.

Working on a Kenwood KR receiver and suspect one of these of being bad. I actually had the datasheet for it on my PC. Yes, my password is: Now I know what it means, and the parts choices made by Kenwood make more sense based on your description.

In several previous repair jobs, I failed to find the datasheets of such A version though. I’m sure it is not as good as those professional trade manuals that you have.