Electronic – what is the name of this yellow tape around high frequency transformer

high frequencyidentificationswitch-mode-power-supplytransformer

[high frequency transformer[1]

what is the name of that tape? , what it is the purpose of it?, can I buy it?
And if not, what is the alternative?

Best Answer

It's an insulating, flame retardent polyester tape normally used within the layers of transformers to enhance the breakdown voltage capability between primary and secondary.

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3M describe it as: -

Yellow polyester film tape with an acrylic adhesive. This tape is suited to coil wrapping, wire harnesses, fractional horsepower motors any many more uses. Flame retardant to UL 510.

3M link

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