vale
Advanced Member level 4

help on mosfet damage
Hi all,
I built a circuit to generate 2 manually adjustable voltages (~0.7V) and selectable by a 3.3V digital signal. I used 2N7000 MOSFET (with internal source-drain protection diode) to implement NOT gate and Switches. The circuit ran ok for some days. But today I found all MOSFET were damaged (may not at the same time). I wonder if they were destroyed by power switching pike or ESD. It is also said that MOSFET is likely be damaged in soldering. Could you give some suggestions to use them?
Thanks a lot!
Hi all,
I built a circuit to generate 2 manually adjustable voltages (~0.7V) and selectable by a 3.3V digital signal. I used 2N7000 MOSFET (with internal source-drain protection diode) to implement NOT gate and Switches. The circuit ran ok for some days. But today I found all MOSFET were damaged (may not at the same time). I wonder if they were destroyed by power switching pike or ESD. It is also said that MOSFET is likely be damaged in soldering. Could you give some suggestions to use them?
Thanks a lot!