PCB circuit board storage and shelf life

The PCB board passes the final finished product inspection, and then the vacuum packaging storage waits for delivery. So why do PCB boards vacuum packaging? How to store vacuum packaging? How long is its shelf life? The following circuit board plant will give you a brief introduction to the storage of PCB and its shelf life.

Why does PCB board vacuum packaging? This is a small problem, but it is a problem that many circuit board manufacturers attach great importance to. As the PCB board is not sealed properly, the surface of the sheet will be oxidized and the tin and solder parts will oxidize and affect the welding, which is not conducive to production.

So how do you store PCB? The circuit board is no more than other products, it can't contact with air and water. First PCB vacuum cannot be damaged, the need when using the circumference around the edge of the box on a layer of air bubble film, bubble film absorbent is better, so the moisture played a good role, of course, moistureproof beads also cannot little. Then classify the emissions to be labeled. The box must be kept in a dry and ventilated place after sealing the box, and avoid sunlight. Warehouse temperature control at 23 + / - 3 ℃, to the best of 55 + / - 10% RH, such conditions, heavy gold, gold, tin, silver, and other general surface treatment of the PCB can be stored for six months, setting silver, tin, OSP surface treatment such as PCB commonly can be stored for 3 months.