The through-hole 2n3904 uses a silicon die that is identical to the surfacemount MMBT3904.
The through hole package can dissipate more power,
but I believe the failure mode is excessive voltage punching through a junction.
So yes, still need diode protection.
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On Wed, Oct 10, 2018 at 01:32 PM, <craigmclean@...> wrote:
If I have replaced Q13 with a larger through hole version of the transistor, is the diode protection mod still required to protect that transistor?
