eepty
Full Member level 2
I am working on a circuit which failed the EMC Surge Transient Immunity Test (2kV level). The working voltage is 240Vac.
Someone suggested to add two back to back diodes across the Live and Neutral wire as a transient suppressor.
The suggested diode has a part number "M4", which is a classified as a general purpose diode. As I know we should use a T.V.S or an Avalanche type diode, I read the specification of that M4 diode. It does show the characteristics: "Non-Repetitive Peak Reverse Avalanche" which is 5mJ.
Then I found another avalanche type diode, the part number is "BYG10G". The "Non-Repetitive Peak Reverse Avalanche" is 20mJ
I have two questions:
1. Are these two diodes suitable for a transient suppressor(at 2kV level)?
2. Both diodes has "Non-Repetitive Peak Reverse Avalanche" characteristics, while the "BYG10G" is not much better than the "M4". Why "BYG10G" is classified as avalanche diode but "M4" is a general purpose diode?
Attached the datasheet for both diodes.
Thank you very much.
Someone suggested to add two back to back diodes across the Live and Neutral wire as a transient suppressor.
The suggested diode has a part number "M4", which is a classified as a general purpose diode. As I know we should use a T.V.S or an Avalanche type diode, I read the specification of that M4 diode. It does show the characteristics: "Non-Repetitive Peak Reverse Avalanche" which is 5mJ.
Then I found another avalanche type diode, the part number is "BYG10G". The "Non-Repetitive Peak Reverse Avalanche" is 20mJ
I have two questions:
1. Are these two diodes suitable for a transient suppressor(at 2kV level)?
2. Both diodes has "Non-Repetitive Peak Reverse Avalanche" characteristics, while the "BYG10G" is not much better than the "M4". Why "BYG10G" is classified as avalanche diode but "M4" is a general purpose diode?
Attached the datasheet for both diodes.
Thank you very much.