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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?; v( m$ N- b* @/ D2 B: l5 R
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按照UL8750: D' g, Q# M- W
7.7.1 Printed wiring boards shall meet the following criteria:
/ U- J: ~7 H e( P+ |% va) Conductive traces shall be bonded to the substrate for the minimum conductor width and: W1 `; l2 r8 a: s" ?8 k& k
maximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796,# t' A( y9 |* ^+ ]/ s/ b
Exception: Printed-wiring boards that are completely encased in potting compound are permitted# _: q" W6 X% \/ G: d( f# ~+ x
to exceed their specified minimum conductor width or maximum unpierced area.( v4 Z; ^) W( i. U9 H! k
b) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature+ I8 N- u7 A7 D5 n& S& D
rating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
: w3 G$ B1 D' g) rTerm Property Evaluations, UL 746B, and
- M7 v! F! m) Xc) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the$ N" Z7 j; |, W* g
Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL o' I2 g0 c. e5 a9 _
94.
% Q, Q, ~% `, @* F" `Exception: A circuit supplied by a Class 2 or LVLE source need not comply.% ]" w/ ]! W6 y' l
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可以看是否满足Exeption 要求。 |
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