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Manufacturing and test room cleanliness

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Ayelet

#46901

Manufacturing and test room cleanliness | 23 January, 2007

Hi,

I am lookinh for standards that define the cleanliness level of the assembly room and also for the test and packaging room. I understand that tehre are some defintions of tempertaure and humidity that shoudl be met. Are there any specs for particle level in the air?

Thanks.

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#46905

Manufacturing and test room cleanliness | 23 January, 2007

J-STD-001C just requires that the area not be so dirty as to contaminate your product, tools, workspace, etc.

If you start counting particles, you're into cleanroom territory. Do a search on ISO 14644-1 for specifics.

Actually Wikipedia does a nice layout of the classifications, although just like here, with Wiki you get what you pay for.

As a reference point, to reach a class 10,000 status with room to spare you'd need smocks, hairnets, booties, laminar flow HEPA work benches and a floor to ceiling filtration system as well. Anything below that and you'd probably need bunny suits at a minimum.

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JDB

#47169

Manufacturing and test room cleanliness | 2 February, 2007

is there a level above 100,000 that does not require the use of booties for general assembly work?

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#47200

Manufacturing and test room cleanliness | 5 February, 2007

The use of booties isn't required per se, just considered a standard step necessary to reach the 10,000 target. You also need to vacuum (central vac system, NOT exhausting into the room) daily, mop weekly, have a one piece floor, blah, blah, blah.....

Keep in mind that class 10k is used for (among other things) implantable medical devices, not circuit boards for consumer products or even medical electronics.

If you're just trying to keep the room as clean as possible w/o using clean room garb, I'd start by installing a tacky mat at each entrance. Positive pressure HVAC with good filtration is imperative, as is unwrapping parts/bare boards outside the room.

Of course all of this assumes you're starting with a fairly clean environment to begin with. If the room's dirty/dusty you need to clean it, otherwise your tacky mats will just keep you from tracking crud out of the room. :)

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ayelet

#47277

Manufacturing and test room cleanliness | 7 February, 2007

Thank you guys. So to summarize - no spec, just need to have decent cleaning...

Are you familiar with dust events that caused burning of test stations ?

Thanks Ayelet

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#54003

Manufacturing and test room cleanliness | 12 March, 2008

Hello Steve:

I work at Navico, a company that makes GPSs and Sonars among other products for recreational fishing. I want to know if our SMT, Thru-Hole and Final Assembly areas need to be in a cleanroom environment?

I've worked in another companies like Sony and Samsung and they don't have these areas in a cleanroom. So pretty sure we don't need to hace them in one either.

Another thing, do you know if there is an official specification for the environment that a company like ours should have in the areas mentioned before? and if so, what is the specification that regulates it.

Thanks in advance.

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