FR4 ثنائي الفينيل متعدد الكلور ذو الإصبع الذهبي

Golden finger feature:

① If the PCB board is made with gold plating + gold-plated fingers, the soldering of double-sided PCB boards will be excellent, the performance of the PCB board will be stable, the pads will be more secure, and there will be no contact issues or short circuits.

② If you choose to use spray tin + gold-plated fingers (the PCB board has gold fingers, and other surfaces are sprayed with tin), it requires that both sides of the double-sided PCB board and the pads can be accommodated.

③ Reducing production costs will not affect the use of double-sided PCB boards.