It seems to me...that if the jack itself is recognized, you should not need a CofC with regard to the plastic. UL should cover this at your jack suppliers facility FUS inspections. Flammability or other material issues should be covered at your initial product evaluation, taking the jack conditions of acceptability into account. From that point on, since UL takes care of it at your suppliers end, and they are not allowed any deviations in materials or construction without reevaluation, you should be covered.
If the jack is not recognized, however, you may need C of C's regarding materials and possibly construction. It seems to me that a recognized jack could be used, but C of C's would be critical here. My company is a component supplier. We sell both recognized and unrecognized components. Our customers often need (sometimes very detailed) C of C's for our unrecognized components. Seldom do they need one for a recognized component, and if they do, it is (as far as I know) due to some agency other than UL. Mel Pedersen Midcom, Inc. Homologations Engineer Phone: (605) 882-8535 [email protected] Fax: (605) 882-8633 ---------- From: Jon D Curtis[SMTP:[email protected]] Sent: Friday, August 28, 1998 4:03 AM To: [email protected] Subject: BOUNCE [email protected]: Non-member submission from [[email protected]] (fwd) From: [email protected] Subject: UL traceability I believe the expression "been there done that" is applicable for all of us whom have dealt with UL. What you are experiencing are requirements of UL follow up services. If I have correctly interpreted the situation, you have a component that is made of plastic (UL approved) that is formed into a stereo jack. When UL comes in for a quarterly inspection they wish to trace the approval of the plastic. In some case a C of C is sufficient and in other cases the resulting component needs to be approved itself. I have no experience with stereo jacks, but my guess would be if you have the parts manufacturer ship a C of C which clearly states the material used to form the stereo jack (including the manufacturer of the plastic), UL can then check the yellow book to ensure that the material used is approved and you should be all set. As for a specification to check to see all these requirements, I do not believe one exists. I could be wrong here, but I believe that UL will tell you to look in the section general of your manufacturing UL file and you will see the requirements. Hope that helps Cynthia Pleach
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