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刚才看UL1727的关于焊接的要求是：5 `& l7 m/ u) a# |
18.3.3 With reference to 18.3.2, a lead is considered mechanically secure when one or more of the
) u7 ]4 {+ U" @) w0 n6 q5 Zfollowing conditions are met:
# f' B: S4 L C$ q" w* la) The lead has at least one full wrap around a terminal.+ u0 M5 Y: n- z7 F d6 @
b) The lead has at least one right-angle bend when the lead is passed through an eyelet or
3 k' k( f4 @5 o" O9 m0 }/ Oopening.
; R* |/ y( _/ z6 s6 x8 QException: On a printed-wiring board that is soldered by a machine process in which the! D# h1 g% W, \/ P: H
soldering time and solder temperature are automatically controlled, bending over of a lead after it- x6 K+ y; B' x5 ^, a+ q
has been passed through a hole in the board is not required.( [- L% X4 w9 ~
c) The lead is twisted with one or more conductors.
$ d! h% ?* u% m' n$ ~( ed) The lead is strapped in place, or the equivalent, adjacent to the soldered connection to hold$ o3 w8 s* E% e) f6 a! z) Q
the lead end in place.
% M# f. D0 d, p6 T: G4 y7 W: A8 g, U4 b$ {8 X' s; a
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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