UL94 V0 and UL 1581 VW-1
UL94 V0 and UL 1581 VW-1
(OP)
I have a box with a PC board inside; I can obtain the UL94 V0 for the PC box, but not for the cable inside.
My supplier advised me that for the cable I can only obtain the UL1581 VW-1. is it comparable to UL94 V0?
I mean, the final system can be declared UL94 V0 compliant at all?
thanks
Mark
My supplier advised me that for the cable I can only obtain the UL1581 VW-1. is it comparable to UL94 V0?
I mean, the final system can be declared UL94 V0 compliant at all?
thanks
Mark






RE: UL94 V0 and UL 1581 VW-1
VTM-0 CLASS, VTM-1 CLASS and VTM-2 CLASS MATERIALS are considered to be equivalent to V-0 CLASS, V-1 CLASS and V-2 CLASS MATERIALS,
respectively, but only for their flammability properties. Their electrical and mechanical properties are not necessarily equivalent.
RE: UL94 V0 and UL 1581 VW-1
If your customer is requiring you to conform to certain specs (I doubt its only that parts must be UL94V0) you better get your hands on that spec and know it front to back. Nothing worse than thinking all you need to do is have V0 parts because they told you that then something else comes up and you need to go back to the drawing board.
It is not unreasonable at all to ask what specs their final product must conform to. Like UL60950 or UL1077 or whatever
RE: UL94 V0 and UL 1581 VW-1
I will take these informations into the account.
And, what about UL1581 VW-1? is it assimilable to UL94?
thanks
RE: UL94 V0 and UL 1581 VW-1
VW-1 is equivalent to V-1 (as far as flammability goes)
So again technically you do not meet the specs as they were provided to you since they required all parts to be V0.
You need to either let them know so they can read their spec and see if V-1 is acceptable or not. But as it stands they told you "ALL MUST BE V0" and with the current info provided you do not meet that spec.
But there is probably a note in the spec allowing VW-1 for certain components/conditions..or not
For my products which are tested to UL60950 I also must follow the V0 requirement..But am allowed to use VM-1 wire inside the unit provided the enclosure meets the requirements of a fire enclosure..
RE: UL94 V0 and UL 1581 VW-1