OK, so my boss asked me to source some transistors that operate in the
100 volts plus, sub 100 micro amp range. Has he been drinking too much Pepsi, or do such things actually exist? (remove first h for email)
MMBTA42 (SMT) MPSA42 (TO-92)
Around a nickel US or less in moderate volume.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
The MPSA42 (NPN) and MPSA92 (PNP) are both capable of handling 300V and sub milliamp currents. They are available in quantities of 100 or so on Ebay.
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Unmount a CRT-screen/tv and look for the printcard mounted on the rear end of the CRT tube. On that card, you'll find three transistors that operates well for high voltage and low current.
the
much
end
operates
The threee transistors that drive the three colors are made to dissipate quite a bit of power, and are not low current. They have load resistors that are power resistors, and handle several watts.
I'll go with the audience, Meredith. Forwarded the data sheets on the MPSA42/92 to the man upstairs and got them rubber-stamped. Thanks, audience!!! Watson and Spehro saved me a lot of work!
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quite a bit of power Correct
I'm disagree. Read the specs for them. Mostly, they wont be able to draw more than 100 - 200 mA.
watts. That is right. You are dealing with power transistors: High voltage an not so high current.
The OP is looking for around 0.1 mA or less.
Mark
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