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刚才看UL1727的关于焊接的要求是：
/ d6 L5 G3 Y' F18.3.3 With reference to 18.3.2, a lead is considered mechanically secure when one or more of the
- I8 o! n ?; r( { F5 ofollowing conditions are met:3 M5 [! J1 p8 R. d8 F1 }
a) The lead has at least one full wrap around a terminal.4 Z3 f3 y9 ^7 Z. ]
b) The lead has at least one right-angle bend when the lead is passed through an eyelet or
# @4 q: _/ d/ T5 q- ^opening.
. d8 O. v6 o5 v+ uException: On a printed-wiring board that is soldered by a machine process in which the1 ^. }2 P) Y! ~$ h5 q# G/ h
soldering time and solder temperature are automatically controlled, bending over of a lead after it
) @3 W. w( V" X) j6 u5 G' G6 @has been passed through a hole in the board is not required.
* P" u: T% {$ G6 Fc) The lead is twisted with one or more conductors.
* F* G! G0 {/ B0 _d) The lead is strapped in place, or the equivalent, adjacent to the soldered connection to hold
, l2 `) T& [0 B, w% R; M8 ethe lead end in place.% w8 b+ W5 [. b+ B) j2 ~
2 d, D8 a% _5 @ C
欧洲的要求是类似的吗？ |
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发表于 2011-10-9 16:50
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