P
Pimpom
Guest
I often come across products in which the PCB has several unused
pads that look quite fresh and take solder readily after the
product had been in use for several years. The pads are plain
copper, not plated or tinned. I assume that such pads are covered
with a thin layer of OSP material but I thought these aren\'t
expected to last very long. How long are they supposed to last?
pads that look quite fresh and take solder readily after the
product had been in use for several years. The pads are plain
copper, not plated or tinned. I assume that such pads are covered
with a thin layer of OSP material but I thought these aren\'t
expected to last very long. How long are they supposed to last?