Welded FPC Gold Pins Design Tips

There can be more than 100 circuits with thickness of 0.2mm in one fpc cable. Although it is more expensive than wire cables, it is widely used in compact smart hardware. Especially for mobile phones, smart watches and other scenes.Today’s topic is design skills of the welded FPC.

Double-sided gold finger + tin hole

We have to design double layer gold pins although they corresponds to only one layer of pad, .FPC is a non-metallic substrate with very slow heat transfer. If there is only one layer of gold pins, the heat transfer of the soldering iron can not be soldered when soldering by hand.Similarly, the tin holes on the pads are also designed to transfer heat and allow the molten solder to flow between the upper and lower layers.


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