Product Overview
KEC 2SA562-Y PNP Silicon Epitaxial Transistor - 1/2 W Audio Frequency Small Signal Workhorse
Condition
Condition is New - NOS. This is new old stock: never installed, never soldered, off the shelf and into the bag. The photos show a single loose transistor, shot once flat on antistatic bubble film and once in close-up against a pale soft background. The black molded plastic case is clean and the printing is crisp: the stylized K of the KEC maker's mark with the code 9B on the top line, A562 on the second line, and the gain-rank letter Y on the third. All three leads are full length, straight and uncut, with a plain gray finish and no solder, no clipping and no bend marks. Nothing here was tested electrically, so treat the photographs as the condition spec. Nineteen pieces are on hand.
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Product Overview
The 2SA562 is a PNP silicon epitaxial transistor made for audio frequency low power amplifier work: the small signal and driver positions in preamps, tone stages, tape deck electronics and consumer audio boards, where a 1/2 W dissipation rating is all the job asks for. This one was built by KEC, Korea Electronics Corporation, and the stylized K on the case is the KEC maker's mark. The JIS type numbering convention leaves the 2S prefix off the case, so the case itself reads A562, and the trailing Y is the factory gain rank rather than a different device - you will see the same part indexed as 2SA562Y, A562Y and A562-Y. The package is the familiar three-lead plastic TO-92 outline, flat on the marked face and rounded behind, small enough to disappear on a fingertip. Beyond PNP silicon epitaxial construction and the 1/2 W rating, no electrical numbers are confirmed here - check Vceo, collector current and the hFE window for the Y rank against the datasheet before you design it in.
Key Features
- Manufacturer: KEC, Korea Electronics Corporation
- Device: PNP silicon epitaxial transistor
- Power dissipation: 1/2 W
- Case marking: A562 with gain-rank letter Y, cataloged as 2SA562-Y
- Other markings visible in the photos: the stylized K of the KEC logo and a 9B code
- Package: three-lead plastic TO-92 style outline, leads full length and uncut
- Intended use: audio frequency low power amplifier applications
- Condition: New - NOS, never installed, not electrically tested
- Voltage, current and hFE ratings: not confirmed - verify against the datasheet before use
Applications
- An audio restorer rebuilding a 1970s receiver preamp who wants an unused A562 in the small signal position instead of a modern substitute
- A repair tech chasing a leaky PNP in a cassette deck head amplifier or a tone control board
- A hobbyist breadboarding a low power audio stage who needs full length uncut leads for a solderless board
- A bench stocker refilling a drawer of JIS numbered small signal PNP transistors sorted by gain rank
Frequently Asked Questions
What do the markings K, 9B, A562 and Y on the case mean?
The stylized K is the KEC maker's mark - KEC is Korea Electronics Corporation, the Korean semiconductor house that built this part. A562 is the device: JIS practice leaves the 2S prefix off the case, so this is the part catalogs call 2SA562. Y is the factory gain rank, a grouping by hFE rather than a separate device. 9B is a factory code. We are not going to guess at what 9B decodes to, and we do not read anything into it that the print does not say.
Has this transistor been tested?
No. These are unused new old stock rather than pulls, but nothing was powered, curve traced or beta checked here. The photographs are the whole of what we can tell you: legible markings, a clean case, and leads that are full length, straight and free of solder. Plan on checking gain and leakage on your own bench before it goes into anything you care about.
What are the voltage and current ratings?
Not confirmed. What this listing supports is PNP silicon epitaxial construction and a 1/2 W dissipation rating for audio frequency low power amplifier duty. Pull the 2SA562 datasheet and verify Vcbo, Vceo, collector current and the hFE window for the Y rank before use.
Will every piece carry the same Y rank and the same 9B code?
The Y gain rank is what this listing is for, so that travels with the part. The 9B code belongs to the piece in front of the camera, and lot codes can vary across the pieces on the shelf. If you need several units out of one matched lot, ask before ordering and we will look at what is actually in the bin.
I need three of these, not a bag of a hundred - can I buy just the count I need?
Yes. Nineteen pieces are on the shelf and they are counted out and priced one at a time, so three means three and nine means nine. The usual alternatives are a hundred-piece bag from overseas with a three week wait, or an auction tray where you buy the whole lot to get the three you were after. Every piece here is the same new old stock A562 in the Y gain rank you see in the photos, never installed, leads full length and uncut. Order what the board calls for, keep a spare or two in the drawer, and leave the rest on the shelf for the next person. Shipping is $8 flat rate and free once your order passes $28, and orders leave our Idaho warehouse the same or next business day.
Three lines of tiny print on a slab of plastic the size of a fingernail, marked in Korea and then set aside so long that the boards it was meant for wore out without it. The leads are still straight and the print is still sharp. Check its gain, drop it into the seat the original left empty, and let it start the quiet work it never got around to.
