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ISO1042-Q1: ISO1042BQ1 vs ISO1042Q1

Part Number: ISO1042-Q1
Other Parts Discussed in Thread: ISO1042


What is the difference between ISO1042BQ1 and ISO1042Q1?

Can it be replace on an existing PCB without any HW change and any re-testing/re-validating of the HW?

Thanks in advance!


  • Hi Anber,

    Thank you for reaching out to us!

    ISO1042BQ1 and ISO1042Q1 are both automotive devices.

    The difference is ISO1042BQ1 meets the basic insulation requirements, and ISO1042Q1 meets the reinforced insulation requirement.

    This blog provides more information about basic insulation and reinforced insulation. You can also find the certifications

    for ISO1042BQ1 and ISO1042Q1 in the ISO1042 datasheet.


    ISO1042BQ1 and ISO1042Q1 have the same footprint, and they can be replaced on an existing PCB.