more EE constants

[sleepingsquirrel]

in reply to Re: Constants you cannot help but remember
in thread Constants you cannot help but remember

And those with an affinifity for BJT IC design

25ohms (re @ 1mA Ic)
-2mV/C (Vbe tempco)
1.21V (band-gap voltage)
25mV (thermal voltage)
0.35 (converting BW to rise time and back)
99.7% (3 sigma)