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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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8 n! o7 @( S& e' p按照UL8750:
7 K; z8 U5 `( G4 i/ L, H7.7.1 Printed wiring boards shall meet the following criteria:+ d, N; X% h- M( @
a) Conductive traces shall be bonded to the substrate for the minimum conductor width and
4 c1 S: q! Z9 s; ^6 `. e4 rmaximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796, @3 K0 B r& P; N/ k' O
Exception: Printed-wiring boards that are completely encased in potting compound are permitted9 G; H3 _$ Q0 ?5 ~1 w
to exceed their specified minimum conductor width or maximum unpierced area.8 L, S, v# l) z0 Y9 C& k
b) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature2 B" I) G8 A8 y6 C F/ e. E
rating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
/ F9 M, C5 Z# o6 P) {Term Property Evaluations, UL 746B, and
3 X! n& ]. I$ o8 }# \: qc) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the# K9 ^; e4 L( o" X/ T2 m
Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL
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' Z# Z* c0 g3 p$ {! D4 [: KException: A circuit supplied by a Class 2 or LVLE source need not comply.1 @7 c2 a4 E, M! `4 ]- Y
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3 p9 o Z! G$ w) `9 E2 K: v可以看是否满足Exeption 要求。 |
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