标题: 关于接点的机械固定 [打印本页] 作者: Liu 时间: 2011-10-9 16:50 标题: 关于接点的机械固定 刚才看UL1727的关于焊接的要求是：8 T9 O7 X$ U9 t5 d8 M# A
18.3.3 With reference to 18.3.2, a lead is considered mechanically secure when one or more of the( Z( }) C/ Z; S( a5 m
following conditions are met: $ A5 g* R9 m& f5 i; k7 W9 Ha) The lead has at least one full wrap around a terminal.+ {! D3 [7 X" y [% U5 A7 |
b) The lead has at least one right-angle bend when the lead is passed through an eyelet or+ n# }8 p) g8 F7 M* t" b2 `5 O
opening.* W# N( b, @/ ]% T" S/ O! E6 ~$ b
Exception: On a printed-wiring board that is soldered by a machine process in which the- |" `1 e$ I' k
soldering time and solder temperature are automatically controlled, bending over of a lead after it ( }; R0 F& |" u* y/ i; F+ |, Fhas been passed through a hole in the board is not required.8 |5 y9 {% `7 f/ U# X L
c) The lead is twisted with one or more conductors. W7 ^) L+ J. A4 M. i- i2 K% Q2 C) ld) The lead is strapped in place, or the equivalent, adjacent to the soldered connection to hold % r/ y. d( F2 [3 i8 U' ]- Xthe lead end in place. 6 [7 B& D: a/ U. r. j" d. A & I2 t0 ]4 ?( i6 j欧洲的要求是类似的吗？