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What is needed for UL ?

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#78622

What is needed for UL ? | 6 August, 2017

We have a client that wants to export modules to the USA, which they didn't do so far, and ask for UL status.

I am a bit unclear about that, so I wonder what is needed?

For the PCB it's clear, must be from a UL supplier. Does the UL number has to be on the PCB?

How about other components, do all parts, (R, C, IC, connectors etc) must be from a UL supplier? (I guess so)

Must cables/insulated wires have the UL logo? (I have some AWG28 cables on the board)

I hope somebody can help with some answers.

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#78630

What is needed for UL ? | 7 August, 2017

The only people that can answer what you need is UL.

At least once a year an inspector from UL stops by and makes sure the High-Pot tester is up to date on calibration and that we are following the BOM provided by the customer and approved by UL.

At at previous company the UL inspector showed up and informed us that we were putting the wrong parts on. They were the parts provided by the customer.

Specific requirements will depend on the product.

Who will be paying for the inspections, you or your client?

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#78633

What is needed for UL ? | 8 August, 2017

#78650

What is needed for UL ? | 10 August, 2017

> The only people that can answer what you need is UL.

I worked with VDE and I do not know any company that works like that. With VDE we prepare a module according to VDE standard and do an internal pre-approval - and present it.

To put something randomly together and send it to UL will extend the time and the cost.

Looks like some parts have no UL requirement, can't see any for 'normal' Yageo R and C.

So back to square one, do all parts need UL?

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#78652

What is needed for UL ? | 10 August, 2017

Do not put something randomly together. Go to the UL web site. Ask them your questions. Do not only ask us. Personally I think you would be smart to present the BOM to UL before buying anything. And parts being UL is not the only requirement.

Where did you get the VDE standards from?

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