low VBE PNP transistor?

[Spehro Pefhany]

On Tue, 19 Feb 2008 21:54:33 -0600, the renowned "Mook Johnson"
<mook@mook.net> wrote:

I have a appliction that needs something like a 2n2907 pnp but could use a
lower VBE on than the 2907. Anyonw know of a transistor that has low VBE
when collector currents in the 500mA range (saturated)?

thnaks

2N4403 is quite a bit better at Ic/Ib = 10, 8050 is better again, but
you should also consider a p-channel MOSFET.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
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[Mook Johnson]

I have a appliction that needs something like a 2n2907 pnp but could use a
lower VBE on than the 2907. Anyonw know of a transistor that has low VBE
when collector currents in the 500mA range (saturated)?

thnaks

 

[Ray King]

Would a germanium pnp like a 2N404 work? These have Vbe 1/2 of the silicon
ones.

Ray


"Mook Johnson" <mook@mook.net> wrote in message
news:M6idnQHT0qwMOSbanZ2dnUVZ_t6onZ2d@comcast.com...

I have a appliction that needs something like a 2n2907 pnp but could use a
lower VBE on than the 2907. Anyonw know of a transistor that has low VBE
when collector currents in the 500mA range (saturated)?

thnaks