creepage and clearance distance of ISO7220M

You are correct. Creepage should be equal or greater than Clearance.

I'll fix the datasheet error.

Hello Saleem,

Thank you for your reply.

What's the rating of creepage for ISO7220M after fix the datasheet error?

Is it 4.8mm just like clearance distance?

I found same datasheet error at the below devices.

• ISO721
• ISO7220A-Q1
• ISO7242C-Q1
• ISO7421A-Q1

Are these also the datasheet error?

Best Regards,

Hidetoshi Matsunami

Hello

I'd like to ask you additional question.

I understood about Clearance and Creepage distance after the board mounting as the following but is this correct?

Is it possible that creepage distance of ISO7220M is shorter than clearance if my understanding is correct?

Best Regards,

Hidetoshi Matsunami

Matsunami-san,

In your example, Clearance distance will be equal to the lower Creepage distance because there is air just above the surface of the PCB.

Clearance is either equal or less than Creepage; always.

Hello Saleem,

I understood it.

I appreciate your support.

Best Regards,

Hidetoshi Matsunami