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Process Specialties is located just off highway 580 in the airport industrial area in Tracy California. We are in a 25,000 sq. ft. facility, a stones throw from the Tracy Municipal Airport, 15 minutes from Lawrence Livermore / Sandia National Labs, and a short 45-60 minute all-freeway drive from the greater Silicon Valley.
Bulk Nitrogen and Oxygen pad Process Specialties building rear

Clean Room One


Clean Room One is a 3,000 square foot Class 100 / ISO 5 facility. It is well maintained and consistently over the years we have been able to achieve particle counts below class 100. Most visitors to our facility are impressed with how new the fab looks. Over the years we have modified and upgraded both the facility and its equipment to meet our clients changing processing needs. In the 30 years since it's completion this clean room and the Engineers and Technicians that work in it, have successfully processed millions of 75mm- 200mm wafers. Above is a view into the gowning area.




One of the Photolithography areas in Clean Room One

In this area we are doing larger geometry ≥ 5um lithography work on 100mm through 300mm wafers.




In an adjoining bay is a second Photolithography area with 150 - 200mm capabilities

East window Fab One



All wafers are tracked and logged through every step in the process using bar code scanners and a computerized logging system.

Furnace load station




One of the 200mm diffusion furnace load stations

Note all the diffusion furnaces at Process Specialties are cantilever load and auto push pull. This means low particle thin films and no warped wafers.

.35um Stepping Services




Here in the Clean Room Two Photolithography area we see one of our 200mm I-Line Steppers and a 200mm spin tool.





The unloading of 300mm wafers after oxidation

 We commonly see uniformities of 1% or less across the wafers (furnace prime), as well as no detectable flatness changes or diffusion related slip has been found on our 300mm Oxidized wafers.




Currently in our 300mm diffusion tools we are running multiple Thermal Oxide, Polysilicon and LPCVD Nitride systems for 300mm wafers. This means we can out produce any of our competitors on these key thin films. This translates into faster 300mm turn times for our customers.



Accuracy in metrology is never an issue

At Process Specialties. We use advanced robotic laser ellipsometers and other calibrated tools for precision thin film, resistivity, CD and step height measurement.

In 2005 with the introduction of our Calibration Standards product line PSI Standards, our thin films truly are the industry standard.

In this clean room we have an additional 2,500 square feet of Class 10 / ISO 3 Clean room space dedicated to 300mm processing.

This clean room area increased our 300mm & 200mm processing capabilities including more PVD Metalization, 300mm Wet processing and 300mm stepped Photolithography, all in a Class 10 environment. In 2022 Process Specialties continues to have more "in-house" 300mm processing capacity than nearly all of its competitors. This translates into Faster Turn Times for our customers custom processing orders.


Views of the Clean Room Three Lithography area

In this area we have a 300mm I-Line stepper, 300mm resist track, and a 300mm wafer inspection system





Two of our 300mm metal tools in the Clean room 3 PVD area. These tools are also capable of processing 150mm and 200mm wafers.





Last a view of the rear facilities area of Clean Room Three. Here you can see the waste water treatment system, DI water system and other support equipment for the Clean room.

Remember, to get a complete tour of this facility you must visit Process Specialties in person. This public tour just shows some of the highlights of our Fab areas, just enough to make our remote customers who don't have a chance to visit, feel comfortable in knowing their wafers are being processed in a cleanFirst Class facility.

To arrange a tour of Process Specialties, call PSI customer service @ 1.800.533.8820 Toll Free in USA

Note: To visit us, your company must be a current customer of Process Specialties, Inc.


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