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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:
: ^) c0 Q/ I/ x9 l: w1 D$ p7.7.1 Printed wiring boards shall meet the following criteria:. q* q: A7 Y1 J0 j
a) Conductive traces shall be bonded to the substrate for the minimum conductor width and! x3 Y( B: b- G- s/ K4 j3 N( d, m# i% U
maximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796,3 O' X& o5 j m" Y _& |( X# A
Exception: Printed-wiring boards that are completely encased in potting compound are permitted6 D0 _: T7 }9 S3 d$ C7 Q
to exceed their specified minimum conductor width or maximum unpierced area.
! t5 m/ U i1 c) y5 G( ^- Y H* Jb) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature/ ]& r3 k/ C5 U/ E
rating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
2 K, G% B$ D( a) ITerm Property Evaluations, UL 746B, and
* a$ U6 y- @9 t. D9 ~8 q8 j, Ic) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the# [ j9 A. X, ~1 y W# k
Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL
% I$ g7 w4 N: ^$ f94.
% y5 I4 M. G! l g$ @) t! Q" jException: 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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