Description, RF Power Transistor NPN Epitaxial Planar Type. Company, Mitsubishi Electronics America, Inc. Datasheet, Download 2SC datasheet. Quote. 2SC datasheet, 2SC pdf, 2SC data sheet, datasheet, data sheet, pdf, Mitsubishi Electric Corporation, NPN EPITAXIAL PLANAR TYPE(for RF. 2SC Datasheet PDF Download – NPN EPITAXIAL PLANAR TYPE(for RF power amplifiers on VHF band Mobile radio applications), 2SC data sheet.

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G4COEApr 27, These two kinds of charge carriers are characteristic of the two kinds of doped semiconductor material.

I suspect the low HFE may be causing poor linearity or poor slow RF switching, thus resulting in the distorted tx audio. The ones I have would not even fit in a TS their body being slightly bigger.

2SC1972 Datasheet

Lettering easily smudged as if wet. Thanks for all the suggestions.

Bias set up according to specs with no issues. They may have unusually high hfe.

NPN is one of the two types dagasheet bipolar transistors, consisting of a layer of P-doped semiconductor the “base” between two N-doped layers. There datashest tell tale signs, Writing easily smudged off, lead out thinner than usual, very shiny metal tabs that look different, the gains on the ones I have is 85 way on the high side I reckon.

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All 6 I received measure an HFE of 2. I am pretty sure a have a spare pair.

2SC+equivalent datasheet & applicatoin notes – Datasheet Archive

A known good “pull” 2SC I had lying around measures 45, which is close to the data sheet spec of “50 typical, 10 minimum”. Just like Cliff I used Eleflow before and without problems. Until I get this sorted I will never order from Eleflow again nor would I recommend them to anyone. KV6OMay 26, Calibration equipment Electrical calibration equipment Pressure calibration equipment Temperature calibration equipment.

I am guessing that he may not even be aware himself that this time around there is an issues with his supplier. Collector – Emitter Voltage Vceo.

That is just gotta be a logical answer Roger. However, on SSB I am hearing distortion on my transmitted signals.

2SC1972 Source?

I had a long chat with him on the phone before buying them. Especially when the power control or mic gain is run low. Sure would be interesting to hear their response.


I contacted Eleflow, I sent them pictures as requested datashet still waiting to hear from them ages ago, I Emailed several times! It is composed of semiconductor material with at least three terminals for connection to an external circuit.

Telecommunication measuring equipment Cable and pipe tracing Cooper networks IT networks Optical networks Spectrum analysers more A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. Next, I decided to datasheett an HFE gain test on the devices received. In contrast, unipolar transistors such as the field-effect transistors have only one kind of charge carrier.

I can’t get replacements that I can rely on.

2SC Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

Register for a free QRZ account. The last thing I can come up with is Eleflow. Something I never thought about is alternatives Hopefully at least ONE set will be genuine!

As I said my Eleflow devices these ‘have’ the hallmarks of fakes or very poor copies.