of EP0561527 Solder is applied to a circuit board 7 by dipping the board into a bath 1 of molten solder 3, the molten solder having a layer of oil 5 on top. The solder is dipped into the bath by rotating it along a path that is substantially coplanar with the circuit board. This ...
Acold jointoccurs when solder fails to melt completely which leads to a rough or lumpy surface. A good number of PCB manufacturers experience this problem; hence, it is a major concern for them. Cold joints can cause further issues in a circuit board as they are unreliable. ...
Then hold the PCB component with tweezers in your left hand and place it in the mounting position and lightly hold it against the circuit board. Use the soldering iron in your right hand to close the tinned pad and melt the solder to solder the pins. After soldering a pad, the component...
PROBLEM TO BE SOLVED: To provide a lead-free solder for circuit boards having better soldering wettability with an Ni-plated surface and a circuit board with an excellent radiation feature produced by using it.;SOLUTION: In the lead-free solder for circuit boards, the wetting angle of a semi...
Method for soldering a printed-circuit board which is fitted with SMD components on both sides, and a board which is soldered in accordance with this methodMethod for soldering a printed-circuit board which is fitted with SMD components on both sides, and a board which is soldered in accorda...
Board-mounted electrical connector with balanced s 优质文献 相似文献 参考文献 引证文献Board to board electrical connectors ofA low profile hermaphroditic electrical connector (10) is provided for mounting on the surface of a first printed circuit board (12) and is adapted to mate with an identical...
A solder bonding metal layer which is formed on a circuit board comprises a metal layer having a mixture of first metal which is easily wetted with metals constituting the solder and which easily forms alloy or intermetallic compounds and of second metal which is not wetted easily with the abov...
PCB( Printed Circuit Board)中文名称为印制电路板,又称印刷线路板,是重要的电子部件,是电子元器件的支撑体,是电子元器件电气连接的载体。由于它是采用电子印刷术制作的,故被称为“印刷”电路板。本文首先介绍了PCB的作用及特点,其次阐述了P...
a按需 According to needs[translate] aLead in solder used in electronic circuit board applications - 8a) 主角在用于电子线路板应用的焊剂- 8a)[translate]
The method involves spreading a solder paste on a side (18) of a printed circuit board (15), and reversing the board. The head (3) of a through-hole mount component e.g. relay, is installed and fixed on top on the board, and the board is then reversed. The board is passed in ...