I have found that little 1N914 and 1N4148 diodes match (voltage and effect of temperature) the base-emitter of little 2N3904 and BC547 transistors pretty well. Except the glass-cased diodes are sensitive to light.
This off-topic talk got my mind wandering:
I have found that little 1N914 and 1N4148 diodes match (voltage and effect of temperature) the base-emitter of little 2N3904 and BC547 transistors pretty well. Except the glass-cased diodes are sensitive to light.
This off-topic talk got my mind wandering: