thank you. Do you know it for sure?
I must to repair it. By myself.why don't you just send it back for repair instead of blowing 1000s of $?
I am fairly certain that is the part. The "FAH15" as I read it is the mfg date code and or lot code. The "NZ" is the actual part code. If you look throught the datasheet I linked to and find SMBJ100A in the chart you will see a column that shows the part code marking. The attached image is cut from the SMD code book that I have. I did not find anything in a 2 pin package with a code of "FAH" or "FAN".thank you. Do you know it for sure?
This VFD cost about $20K, and I already spent about 3K for parts.
the problem are FAH15NZ and FAH19NZ different. 15 have polarity, and 19 not. both have NZ at the end. On this picture whole board. 6 channels. Each have 1 pcs FAH19NZ (marked red) and 7 FAH15NZ (marked yellow).I am fairly certain that is the part. The "FAH15" as I read it is the mfg date code and or lot code. The "NZ" is the actual part code. If you look throught the datasheet I linked to and find SMBJ100A in the chart you will see a column that shows the part code marking. The attached image is cut from the SMD code book that I have. I did not find anything in a 2 pin package with a code of "FAH" or "FAN".
take a look one more time on this diodes, you think they are same?According to the datasheets that I have found for that "NZ" coded diode, they are unidirectional. Also noted on the datasheet that I posted in post #5, it states that bidirectional diodes do not have a polarity marking. As I was saying before, the "FAH15 / FAH19" is just the date code / mfg marking / posibly lot number. With that in mind I would test the ones you have that show no polarity out of circuit and/or replace all of them, they do not cost that much.
i agree with this. it is an easy thing to do and fastest way to confirm what they really are.... I would test the ones you have that show no polarity out of circuit
check them - they have porarityi agree with this. it is an easy thing to do and fastest way to confirm what they really are.
by Jake Hertz
by Jake Hertz
by Duane Benson
by Duane Benson