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刚才看UL1727的关于焊接的要求是:
" L1 l1 G! _7 j, y( q! m18.3.3 With reference to 18.3.2, a lead is considered mechanically secure when one or more of the8 W8 A0 w: x8 `) B7 M- I7 r9 q8 z
following conditions are met:
% J1 u3 E0 j9 ]: w5 v1 y7 ta) The lead has at least one full wrap around a terminal.
0 J9 U5 f6 `: w+ B" zb) The lead has at least one right-angle bend when the lead is passed through an eyelet or' e& o: v- G) \6 s0 s7 T/ K
opening.6 M; E' [3 F3 u9 @* A
Exception: On a printed-wiring board that is soldered by a machine process in which the( D5 \. O, T% V
soldering time and solder temperature are automatically controlled, bending over of a lead after it
8 w! l9 q: h4 ~9 e7 ^has been passed through a hole in the board is not required., @9 j! ^: \& G
c) The lead is twisted with one or more conductors.9 P* Y* ^. @- R7 F
d) The lead is strapped in place, or the equivalent, adjacent to the soldered connection to hold* ^* G- d* p7 [- j
the lead end in place.
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8 E7 C8 @5 [4 A欧洲的要求是类似的吗? |
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