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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?( w( K# O; O$ e$ ^* i9 y6 [
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按照UL8750:
2 z0 y: h6 Z" L! O7.7.1 Printed wiring boards shall meet the following criteria:8 J4 z F6 @ {
a) Conductive traces shall be bonded to the substrate for the minimum conductor width and& i7 b: N4 ~& i8 b; E, A
maximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796,( R! |4 z i3 I% \3 U
Exception: Printed-wiring boards that are completely encased in potting compound are permitted
8 P x2 G$ w) T$ }, N( Z5 P0 V: g1 {( Tto exceed their specified minimum conductor width or maximum unpierced area.* w( ?. ^" I' h
b) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature. K/ }! y% o( }! I2 f" h; x
rating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
) j6 N* I9 V: o4 X/ lTerm Property Evaluations, UL 746B, and8 t) ~# o" T8 \6 D9 k$ _7 Z
c) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the8 O! a, ?* V5 x% I
Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL
2 X. r5 R6 L. {3 _7 a, N94.
" ^: e9 \" k6 e2 k" X l: RException: A circuit supplied by a Class 2 or LVLE source need not comply.
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可以看是否满足Exeption 要求。 |
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