Using the B-E junction of a transistor as a diode

Status
Not open for further replies.

ChrisP58

Well-Known Member
Most Helpful Member
So, the Base-Emitter junction of a BJT is essentially a diode.

My interest is purely economic. I have a circuit that uses a PNP (2N3906) that is also connected to a diode (1N4148).

I can get a dual PNP in a SOT-363 package. By using half of it for the diode, there is only one part to buy and populate.

It simulates just fine in Ltspice. But are there any non obvious potential issues with using it as such?
 
I was just looking at that -slope portion of Vbe curve as current is increasing,
a potential oscillator in the making.....
 
Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…