What does UL94V0 actually Apply to?

Question

Hi

Im doing a development right now where the components needs to be UL94V0 complaint.

However im finding it really difficult to get a clear picture of what the standard applies to or is relevant for.

I Have found some compliances with power connectors, PSUs and a couple of Relays. But the place

where it makes my head spin is when i move down to look at the ICs i need for the circuits, because not

a single one of these has the rating eventhough the case is made from some combination of molded plastics.

The majority of the datasheets doenst mention UL94v0 at all which makes it seem to be not relevant, however

i have managed two find a couple of ICs which has this rating with the same case style i.e. SOT23.

This just makes me question more about what UL94V0 actually applies, and i was hoping that someone in this

community could help me out and shed some light on the matter.

Regards

Jacob

niteowl12 · Accepted Answer

Jacob,

UL94 V-0 applies to plastics only. When it comes to IC's, the encapsulation material is where the rating would apply. What i would do if you need this specific rating is find out what type of encapsulation material the company uses. I think its typically an epoxy which would probably satisfy a V-0 rating. You can always contact the supplier of the IC and ask these questions if the datasheet doesnt make it known. I have had fairly good responses when I start calling and emailing suppliers. Hope this helps.

Edit:

Wikipedia actually has a decent explanation of the rating.

https://en.wikipedia.org/wiki/UL_94

-Jason