Hi Folks Just a few points to remember (and provided my memory serves me correctly!) for any one wanting UL Listing of the end-use product in which Printed Wiring Boards are used. [These will be familiar to people who haev UL/CSA experience, but may come as shock to those who do not!]
a) The tests and flame ratings may be the same between the UL/CSA and IEC standards, but the associated "production quality control" requirements are not - UL has a full Component Recognition programme which has to be met if you want to get UL Listing of the product in which the board is fitted. These requirements are aimed at the laminate manufacturer, and relate to the number and types of laminate layers and prepregs (etc). b) Additionally, if you want to use the board in primary or hazardous voltage circuits then there is a further Recognition program with separate sets of tests of additional tests for such things as quality and accuracy of of etching, and the peel strength of the complete manufactured boards. These requirements are aimed at the end-use board manufacturer who is using materials Recognised under a) above to ensure that he uses only the correct materials and processes them in the correct manner. c) For non-PWB "plastics" there are separate similar UL Recognition programmes for the base moulding materials and for the complete moulded/fabricated parts. d) All UL Recognition Programmes involve both product testing and initial and repetitive inspections of the materials and fabrication plants - and can cost a lot of time and effort! Tread warily, therefore, when equating apparently similar UL/CSA requirements and IEC requirements! Regards John Allen ----- Original Message ----- From: "Brian McAuliffe" <i...@mcac.ie> To: "Emc-Pstc Post" <emc-p...@majordomo.ieee.org> Sent: Wednesday, August 21, 2002 10:01 AM Subject: IEC 60707 v UL 94 flammability ratings > > Can UL 94 V-1, V-2 etc ratings be regarded as equivalent, more stringent or > less stringent than IEC 60707 FV-1, FV-2 etc. ? > > Brian McAuliffe > > MCA Compliance Solutions Ltd > Unit 2 Lissane Business Park|Clarecastle|Co.Clare|Ireland > > w: www.mcac.ie > e: i...@mcac.ie > t: +353 (0)65 6823452 > m: +353 (0)87 2352554 > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
