|
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?6 P D+ O4 b0 G: M u
3 K6 F, y7 t& X按照UL8750:* Z3 L+ e$ K3 m$ `9 U
7.7.1 Printed wiring boards shall meet the following criteria:
0 t4 F$ X& j% X- la) Conductive traces shall be bonded to the substrate for the minimum conductor width and: N0 E0 Z8 O5 G v4 M& b7 o
maximum unpierced area as required by the Standard for Printed-Wiring Boards, UL 796,
: v) L0 I. V$ XException: Printed-wiring boards that are completely encased in potting compound are permitted" D" s, C% n) o
to exceed their specified minimum conductor width or maximum unpierced area.
# a/ I& R+ b. h0 ?* eb) Temperatures measured in the temperature test of 8.3 shall not exceed the temperature5 }3 r# W; {. g$ K) Y; E
rating (RTI) of the substrate as determined by the Standard for Polymeric Materials – Long
6 d' J; b' o6 s! m9 aTerm Property Evaluations, UL 746B, and
& H* s- A6 `. X. Y S9 gc) Printed wiring board substrate flammability shall be no less than V-1 in accordance with the
. |) |1 h- g. U! r0 p* MStandard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL
5 J/ X( z, b% a0 H4 t' @) d94.
; w- w: g, A/ |/ C0 @! J5 ]0 [Exception: A circuit supplied by a Class 2 or LVLE source need not comply.
" n* N0 M( V" a0 ?. T/ I' s& t6 |8 j1 r0 f$ I$ U
+ ?7 Z* c* c( l* Y
可以看是否满足Exeption 要求。 |
|