2SA DESCRIPTION. ·With TOF package. ·Complement to type 2SC ·High transition frequency. APPLICATIONS. ·Power amplifier applications. Characteristics of the 2SA bipolar transistor. Type – p-n-p; Collector-Emitter Voltage: V; Collector-Base Voltage: V; Emitter-Base Voltage: 5 V. 2SA, 2SA transistor, 2SA PNP Power Transistor, buy 2SA Package Type, TO Technical Data, 2SA Datasheet.

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Discussion in ‘ DIY ‘ started by slimecityNov 9, Log in or Sign up. Looks like these are getting scarce. Anyone know a good source for these?

2SA1837 Datasheet, Equivalent, Cross Reference Search

They are rated at Mhz. Mouser seems to carry the but not the arrgghh. Unless anyone else knows of any other decent possible sub at the same specs?

dqtasheet You are right to be looking carefully at the replacements for these transistors, the mechanical and electronic chracteristics of the originals are difficult to match. Especially now that the above mentioned replacements availability has fallen off the edge of a cliff.

HyperionNov 9, You could try bdent – Here http: Good ole Ceitron in the US also has em in stock: Thanks peeps – I think I need to stock up on these to potentially replace those Bdent seems to have plenty in stock and Im pretty sure I can trust that the parts will be genuine. AlanNov 9, Illinois, close to St. My Japanese Data manuals stop at 2SA!


Toshiba – 2SA – Bipolar Transistors – BJT PNP – V -1A 20W

And stops at 2SA That means the transistors were fabricated with JIS numbers issued just after the edition was printed.

I use this site to find transistors: AlanNov 11, I got these from Bdent. They look OK but. Very shiny legs – to the point where Im a bit suspicious. Stamped under all the “2SA’s” and 2SC is “5: The weird thing is that in my little component dafasheet I am getting a pretty uniform hFe on the 2SC, but a much lower 9and also fairly consistent hFe on the 2SA’s.

I thought the hFe’s would be a bit closer From 2ss1837, hfe is minimum Yours are on the high side.

I measure the Vbe at about 10mA, Vbe is between 0. I choose this transistor for the low Vbe. I bought it from Bdent also. This transistor is just got datashret, it is cheap, I just don’t think there is incentive to make fake one for this cheap price. If you are interested, read my thread that I bought the AlanNov 30, That’s why I failed to see the need of getting them in pairs.

I picked 2SA mainly by the Vbe. Looks like you have the same lot I have, the 5: You saw I did write I compare in detail with the one I bought from Digikey 3 years ago and they are identical except the lot number 5: That’s normal, they build by the lots, you don’t expect the ones bought 3 year ago are from the same lot.


I even have pictures of the two for you to see.

2SA(F,M) – Toshiba – PCB Footprint & Symbol Download

You can see in very detail the look of the lot 4: Q from digikey, the package are identical in every single datasgeet. I doubt anyone can fake it this good. Fake components are being made, regardless of price. I’ve come across dozens of fake TO transistors, and these are worthless! There are certainly tons of fakes of these being made. These parts are relatively expensive, making them a very attractive target for fakers.

ChitsDec 2, This is from Bdent, not any ebay stuffs. They seems to be a big outfit. People here order from them also.

Search Results for 2SA1837 : 1 documents found

Bdent might have bough large quantity and still have old stock. I did measure the Vbe, it is in agreement with the ones I bought from Digikey 3 years ago.

I picked this by the low Vbe, most of the TO transistor have higher Vbe than 0. AlanDec 2, You must log in or sign up to reply here.

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