NPN Transistor Question

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Jim Thompson 11 years ago

Being in the I/C biz, I don't keep up very well with what is available in the discrete transistor world.

What I'm looking for is a _readily_available_ NPN, highest fT, VCE < 15V, IC < 10mA

Suggestions?

Thanks! ...Jim Thompson

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| 1962 | I love to cook with wine. Sometimes I even put it in the food.

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Phil Hobbs 11 years ago

BFP840--80 GHz, 5000 in stock at Digikey, about 30 cents.

Cheers

Phil Hobbs

Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net

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DecadentLinuxUserNumeroUno 11 years ago

On Fri, 05 Jun 2015 12:53:53 -0700, Jim Thompson Gave us:

Tough numbers to hit on...

close!

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DemonicTubes 11 years ago

Rohm 2SC4726TLN ? rohmfs.rohm.com/en/products/databook/datasheet/discrete/transistor/bipolar/2sc4726.pdf

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DecadentLinuxUserNumeroUno 11 years ago

On Fri, 05 Jun 2015 16:53:50 -0400, DecadentLinuxUserNumeroUno Gave us:

A little closer...

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Jim Thompson 11 years ago

Thanks, Phil! ...Jim Thompson

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Phil Hobbs 11 years ago

BFP640FESD has BVces > 13V. Only 65 GHz.

Cheers

Phil Hobbs

Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net

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John Larkin 11 years ago

That practically oscillates just laying on the table!

John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com

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Phil Hobbs 11 years ago

They're really amazing at low current, though. High Early voltage, good beta ar low current.

Cheers

Phil Hobbs

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John Larkin 11 years ago

If I had a PNP to match, I could make the world's fastest SCR.

John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com

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Phil Hobbs 11 years ago

Holy mobility, Batman!

Cheers

Phil Hobbs

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Winfield Hill 11 years ago

13V?? 4V 46GHz ??

Thanks, - Win

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Phil Hobbs 11 years ago

I said BVces, which by my datasheet is 13V. BVceo is much less. I quoted fT from memory, but was getting it mixed up with another device. Thanks for the corection!

Cheers

Phil Hobbs

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Robert Baer 11 years ago

What about the age-old standby, the 2N2222?

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DecadentLinuxUserNumeroUno 11 years ago

On Sun, 07 Jun 2015 23:15:18 -0700, Robert Baer Gave us:

You missed the same thing I did. Highest fT.

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tabbypurr 11 years ago

250MHz may fall a litle short

NT

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Spehro Pefhany 11 years ago

Why not suggest the OC71?

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ft 300kHz.

Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48

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Jim Thompson 11 years ago

;-) CK722 anyone ?>:-} ...Jim Thompson

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DecadentLinuxUserNumeroUno 11 years ago

On Mon, 08 Jun 2015 07:49:20 -0700, Jim Thompson Gave us:

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or this one...

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John Larkin 11 years ago

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Used to cost a week's allowance.

John Larkin Highland Technology, Inc picosecond timing laser drivers and controllers jlarkin att highlandtechnology dott com http://www.highlandtechnology.com

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NPN Transistor Question

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