Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Moisture ingression on components

C.Long

#4438

Moisture ingression on components | 13 April, 2000

Anyone have any ideas as how to track the amount of air exposure to SRAMS etc as thay move from stores onto the production floor. i am looking for ideas as how to track the exposure time from the time they are taken out of ther packaging to the time thay enter the placement machine. the current process being used involves physical tickets attached to bundles of components but operators do not fill them out correctly thus our data is incorrect ............ any ideas???

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#4439

Re: Moisture ingression on components | 13 April, 2000

Hi: Use the whip on your operators.!!! Serious: The assembly should know how much time they have left to process those parts safely. Keep them as long as possible in the drybags, reclose the bags immediately after getting the needed parts out. In the production floor you can either use drybags as well or a dessiccant cabinet. With the drybags you have the problem how many go in one bag that a safe assembly is guaranteed. Train your people.

M2C

Wolfgang

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#4440

Re: Moisture ingression on components | 13 April, 2000

I agree with Wolfgang. If you don't control your processes, they will control you ... and they will put you out-of-business, if you let them. Ta. Dave F

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Rich Z

#4441

Re: Moisture ingression on components | 14 April, 2000

C.Long,

Have you thought of using a barcode reader system? Though costly, such a sytem would minimize the room for error and neglect by your operators. Yes, physical tickets would still need to be applied (barcodes labels) but there would be less effort required of mfg. floor personnel in the area of physical logging and tracking. I am in the middle of setting up our Moisture Sensitivity program and I concur with Wolfgang in that constant attention and supervision (cracking the whip) is needed. Due diligence will prevail. I wish you the best of luck. Go get 'em! Rich Ziebell

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clong

#4442

Re: Moisture ingression on components | 17 April, 2000

Where would i get more info on various barcode reader systems and are there cheaper alternatives to this

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