jameslee
Newbie level 4
:grin: Hi everyone, I'm kinda new to zener diode and wish to ask expert here for some guidance.
usually i only use zener as temporary overvoltage protection, but there are some occasion i use zener to bias a transistor for non critical power supply.
These are some of the things i dont understand much:
1) What is the difference between normal zener diode and silicon planar zener diode?
2) why zener diode rated by Zzk,resistance. In which occasion does zener resistance is important?
3) some zener breakdown voltage are more "resistance" towards Izk changes, as if even if Izk change, the breakdown voltage still remain more or less the same, but which parameter in datasheet specify this characteristic?because not all datasheet shoes I-V curve of zener at breakdown region.
sorry if i'm asking dump question, I dont have much understanding in zener diode application.
Thanks in advance for all of your help.
James
usually i only use zener as temporary overvoltage protection, but there are some occasion i use zener to bias a transistor for non critical power supply.
These are some of the things i dont understand much:
1) What is the difference between normal zener diode and silicon planar zener diode?
2) why zener diode rated by Zzk,resistance. In which occasion does zener resistance is important?
3) some zener breakdown voltage are more "resistance" towards Izk changes, as if even if Izk change, the breakdown voltage still remain more or less the same, but which parameter in datasheet specify this characteristic?because not all datasheet shoes I-V curve of zener at breakdown region.
sorry if i'm asking dump question, I dont have much understanding in zener diode application.
Thanks in advance for all of your help.
James