Most individuals see that backyard shed as little greater than a spot to retailer some gardening instruments in, however should you’re like [Dr. Semiconductor], then what you see is a possible cleanroom for semiconductor manufacturing. As ridiculous as this may increasingly sound, the fundamental steps behind the totally different ranges of cleanrooms work simply as effectively for a multi-million greenback fab as they do for for a primary shed.
Key to all the things is HEPA filtration together with optimistic strain, to continually push clear air into the cleanroom, whereas stopping soiled air from flowing in. The shed was additionally cut up into two sections, the primary room when you enter it being the the gowning room. That is the place you modify into cleanroom gear earlier than you transition into the cleanroom.
Along with the flame-resistant drywalls, a water-based epoxy coating was utilized to the insides of the cleanroom partitions to make it easy and freed from particles. The HEPA filtration system continually filters the shed’s air together with some contemporary exterior air, whereas an airconditioning unit ensures that the temperature stays fixed.
The measured >0.5 µm particle contamination contained in the shed turned out to be sufficient for a FED STD 209E equal of Class 100, which is ISO 5 class with a most of three,520 particles/m3. For comparability, room air is ISO 9 with max 35,200,000 particles/m3. At ISO 5 it’s ok to do some semiconductor R&D laboratory issues, which is what [Dr. Semiconductor]’s channel is – shockingly – about.
Because of [Thayer] for the tip.
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