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黄卡里没有这个厚度你认为是UL通过了认证满足UL 796要求吗?
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按照UL8750:# X: S7 X: h$ E+ T6 c
7.7.1 Printed wiring boards shall meet the following criteria:
9 K6 `2 V2 X5 t1 C+ Oa) Conductive traces shall be bonded to the substrate for the minimum conductor width and
+ j& j/ y% _6 |maximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796,
! G# D; a- H- a+ x& f* E; nException: Printed-wiring boards that are completely encased in potting compound are permitted/ g" a2 U0 H! ?5 K& d
to exceed their specified minimum conductor width or maximum unpierced area.
9 T' _' ?* d/ b( J, l) @b) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature1 ^: R1 a3 Q n4 u
rating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
" n7 z* |4 y+ K3 b9 {* U2 ~Term Property Evaluations, UL 746B, and
% i+ E, k( F6 @- ~& Nc) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the n+ \# {7 N) D
Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL
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Exception: A circuit supplied by a Class 2 or LVLE source need not comply.( Z- N; B: m% e# R
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可以看是否满足Exeption 要求。 |
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