What Are The Typical Completed PCB Storage Conditions

- Sep 01, 2018-

What are the typical completed PCB storage conditions?Is it defined in the ipc-a-600 specification?Which criteria are mentioned?In addition, how many storage conditions can PCB be stored for how long using the vacuum packaging method?What should be done before the next use of PCB under the condition that it cannot be used up in one time due to the production capacity after the use of vacuum packaging?Like baking?Baking conditions and time?


The IPC defines the test method for storage conditions, and how the finished product should be stored depends on manufacturing and user status.It should be safe as long as it is no worse than his test conditions.In addition to the IPC specifications, JDEC reliability tests also have reliability test standards, which are actually related to storage conditions.As for the JDEC test, the simulation test with long storage is to simulate the impact of storage conditions on the product, and this section can also be used as a reference.

The storage conditions and the impact of changes in the product, depending on the packaging, product category, storage environment, etc., are hard to come up with absolute standards, so there's no way to answer how long you can keep it, though you can make a rough decision based on JDEC's reference data.If you really can't use up all the circuit boards at once, just pack them in a clean plastic bag and leave them in a cool, dry environment.As long as do not suffer moisture commonly, most can store quite long.

Unless you use the circuit board, the final metal surface treatment is to use a less weather-resistant treatment, otherwise most will not have a problem.As for baking, humidity is too high if the circuit boards does in explosion risk, so can consider to use 110 ℃ before assembly again bake for about 40 minutes, so should be able to reduce the rate of blasting machine.