Dioded on driver board

[RJohns777]

Anyone know a good part number for diode D6 on a Sundown SCV-7500 output driver board? The number on the diode is XH3 on top. 4NO3 on bottom. Thanks.

 

[Mark Tillotson]

Looks like its a bootstrap diode for a driver chip, needs to be fast or schottky and handle the full supply voltage - since schottkys aren't so good at high voltage I'd opt for ultrafast rectifier 1A rating or so. Or look up the datasheet for the particular driver ICs you have and see if it has information.

 

[davidsrsb]

This is the original part
https://www.semicon.sanken-ele.co.jp/sk_content/sjpx-h3_ds_en.pdf
A 300V 2A FRED diode
4N03 is the date code

 

[RJohns777]

Thanks Mark and David.