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UC1843-SP: SEL Sensitivity

Part Number: UC1843-SP
Other Parts Discussed in Thread: LM139AQML-SP

Hi Team,

We're almost certain but we need to confirm if the parts UC1843-SP and LM139AQML-SP are non SEL (Single Event Latch-up) sensitive due to their bipolar process. I've also seen some references such as the Single-Event Effects Test Report of the UC1843B-SP (we assumed the same for UC1843-SP as they are on the same device family); and this E2E post saying that the LM139AQML-SP is indeed unexpected. But to be 100% sure, can you confirm this so we could confirm it to our customer as well? Can you also advise if these devices are non thyristor structure?

Thanks in advance!

Kind Regards,