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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?+ k: [7 C. U% \7 W: G
! T6 i8 _' c% \2 n按照UL8750:, ~2 u/ x0 \* a, N7 K n
7.7.1 Printed wiring boards shall meet the following criteria:, w( @ P' H2 g% ~
a) Conductive traces shall be bonded to the substrate for the minimum conductor width and9 G8 ^5 f& x3 M' ?9 H
maximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796,8 i5 q: Y, m. Z* _7 M
Exception: Printed-wiring boards that are completely encased in potting compound are permitted
- J, T4 Z' Q7 dto exceed their specified minimum conductor width or maximum unpierced area.0 I2 e% T- g3 r$ {
b) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature
U8 y1 U- T% U) C0 E8 Nrating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
! W" Y/ D9 j8 ~, `' L bTerm Property Evaluations, UL 746B, and* U$ u+ V1 k! u. Z
c) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the4 a2 m" c0 ~- X
Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL6 @2 N" U0 G; ]! k0 b5 D
94.9 s: X* e- H/ ^6 C- G
Exception: A circuit supplied by a Class 2 or LVLE source need not comply.
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8 L) ]2 o Y& t8 b7 H可以看是否满足Exeption 要求。 |
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