On 15/05/2021 01:02, Paul wrote:
Is it possible the diode is actually made of diodes in series ?

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CL01-12 Diode Microwave Oven High Voltage 12kV 350MA

12kV repetitive peak reverse
350mA average output forward
30AÂ*Â* surge, 8.3msec, forward
Vf 12V max at 350mAÂ*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* --- about 12 diodes in series or so
Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* at roughly 1V drop on each, cannot be
Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* checked on "diode" range of multimeter
2 to 50ua reverse leakage

You would need to make up a little test circuit
to verify the forward characteristic.


No idea. It's a CL04-12 if that makes a difference. I don't know what a
test circuit would be.