Serving the Semiconductor Industry since 1999
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Universal Microsystems
High precision, restrictive flow orifices for gas flow control
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Phone: 408-727-1313
E-mail Us
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Orifice Restrictor vs Sintered Media Restrictor
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> Better flow repeatability +/- 1percent per lot > Better Stability, no clogging > Lower back pressure effect > Less dry down time > Accurate surrogate gas calibration
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Orifice Restrictor vs. Gasket
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> Doesn't wear out
- reassemble any number of times
> Readable label
- out of package gaskets have no ID
> Visible component of gas line
- can't be forgotten
> Completely stable flow
-over tightening gaskets can change flow considerably
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Replace an expensive MFC with a pressure regulator,
a valve and a precision flow orifice.
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> Stability & Repeatability 0.1percent vs. 0.2 percent > Less seat leakage, 10-8 vs. 10-4 atm cc/sec > Accurate surrogate gas calibration > Multi-gas compatibility for each unit > Lower cost, fewer system components > Field interchangeable
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