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How to storage your PCBs correctly?

2016-11-25   Reada PCB

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Condition of storage :  Temperature : 10-40   Hummidity : < 50%

 

Quality gurantee date :

HAL Board : One year

Immersion Gold board : 6Months

OSP boards : 3Months

Immersion Silver Board : 3Months

Immersion Tin Board : 3Months

 

 

Flex-rigid PCBs storage conditions:  

Temperature : 10-20  Humidity:< 40%

 

Aluminum foil bag vacuum packing (Put moisture Beads), save the best period of 1month, no more than 3months. To bake the boards at 120degree, 4-8hours before SMT, and perform first article confirmed.  


A. For PCBs  of  HASL  surface  treatment:

1) Storage conditions before and after vacuum-packing: temperature <25 ℃, relative humidity <60% .

2) The shelf-time is one year after the vacuum packaging. When storage time is beyond 6 months, once opened, usually the PCB should be arranged assembly , and in order to avoid the PCB popcorn caused by storage of moisture, the PCB should be baked to remove moisture. The baking condition is 120 ℃, baking time is 1 hour, and maximum time should not exceed 1.5 hours.


B.    For  PCBs  of  ENIG  surface  treatment:

1) Storage conditions before and after vacuum-packing: temperature <30℃, relative humidity <60% .

2) The shelf-time is half of a year after the vacuum packaging. When storage time is beyond 6 months, once opened, usually the PCB should be arranged assembly , and in order to avoid the PCB popcorn caused by storage of moisture, the PCB should be baked to remove moisture. The baking condition is 120 ℃, baking time is 1 hour, and maximum time should not exceed 2 hours.


C.    For  PCBs  of  Immersion  Tin  surface  treatment:

1)Storage conditions before and after vacuum-packing: temperature <25℃, relative humidity <65% .

2)The shelf-time is one year after the vacuum packaging.

3) Finished products should not be baking, and finished using within 2 days after being unpacked.




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