max base current of PN2222A?

[Walter Harley]

Anybody know the maximum base current for a PN2222A (jellybean NPN
small-signal transistor, TO92 case)?

I can't seem to find it in any of the datasheets I have.

In general, is max base current determined by Pd, or is there another
breakdown mechanism at work?

 

[James Beck]

In article <Ve-dne-hc8_x_MXeRVn-pw@speakeasy.net>,
walterh@cafewalterNOSPAM.com says...

Anybody know the maximum base current for a PN2222A (jellybean NPN
small-signal transistor, TO92 case)?

I can't seem to find it in any of the datasheets I have.

In general, is max base current determined by Pd, or is there another
breakdown mechanism at work?



I would hope that it could take the worse case amount.

My datasheet listed a min gain of 35 and a max collector current of
800mA. That would give you ~23mA through the BE junction at DC.
Although, my datasheet is also lacking in any manufacturer rated data.

Jim

 

[Spehro Pefhany]

On Thu, 20 Oct 2005 20:33:35 -0700, the renowned "Walter Harley"
<walterh@cafewalterNOSPAM.com> wrote:

Anybody know the maximum base current for a PN2222A (jellybean NPN
small-signal transistor, TO92 case)?

I can't seem to find it in any of the datasheets I have.

Philips has Ibm (peak base current) rated at 200mA max on their SMT
version. The typical Vbe curves on most data sheets run up to
25mA @ 125°C, with pulsed base current of 50mA for Vce tests (Ic =
500mA, beta = 10).

In general, is max base current determined by Pd, or is there another
breakdown mechanism at work?

Best regards,
Spehro Pefhany
--
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