My customer want to use ISO7821DW in their product. The maximum working isolation voltage is 2000VDC<2121VDC, so the ISO7821DW could meet the spec.
And they need add the 4000VDC/1min between two sides. I find the withstanding isolation voltage is 5700V*1.414 from datesheet. The ISO7821DW could meet the spec. if only considering the voltage value, but the spec., t = 60 sec (qualification) and t = 1 sec (100% production), misunderstood me, could you tell me the difference between them? And Could the ISO7821DW meet the 4000VDC/1min test? Thanks!