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Production PCB assembly fixtures (also known as SMT fixtures even though they can also be used for through hole applications) are the traditional fixtures made with Durostone®, a heavy-duty fiber glass material which offers extreme strength and excellent electrical and thermal properties. Durostone® comes in black, gray and blue. Black and gray are the most commonly used since they are ESD. Production fixtures last a long time, but they are expensive and could take several days to fabricate.

Prototype PCB assembly fixtures are a smart choice for prototype and short run PCB projects. They are made with Stainless Steel or FR4 material. FR4 is the fiber glass material that is used to fabricate printed circuit boards. The stainless steel SMT fixtures are laser cut with the same kind of infrared laser used to manufacture SMT stencils. FR4 and Durostone® fixtures are made with CNC machines.

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Surface Mount Carriers

Surface mount carriers are extremely useful. They can be used to support, protect and transport PCBs of different sizes and shapes including flex PCBs through the SMT process. Surface mount carriers can significantly decrease setup time and reduce handling.
Stainless steel fixtures should not be used for reflowing.

Printing Yes Yes Yes
Placing Yes Yes Yes
Reflowing No Yes Yes
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Surface mount carriers

Wave Solder Pallets

Wave soldering is still widely used in printed circuit board manufacturing for soldering through-hole components. Wave solder pallets are used during wave soldering to mask SMT components (ground planes, gold fingers and mounting holes) while exposing the circuit board to the wave only where solder is required. Our wave solder pallets are custom designed to meet your project requirements.
Stainless steel fixtures are not be used to fabricate wave solder pallets.

Printing Yes Yes
Pick & Place Yes Yes
Oven Yes Yes
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Wave solder pallets

Selective Solder Fixtures

Selective soldering is the preferred method of soldering through-hole components on a mixed technology assembly. Selective solder fixtures are used during selective soldering to protect SMT components and to shield thermally sensitive parts from the heat and solder.
Stainless steel fixtures are not be used to fabricate selective solder fixtures.

Printing Yes Yes
Pick & Place Yes Yes
Oven Yes Yes
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Selective solder fixtures

Press Fit Fixtures

Press Fit Fixtures are used to provide your printed circuit boards the necessary support during the insertion of connectors.
Press fit fixtures protect the PCBs and the connectors.

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Press fit fixtures

Custom Fixtures

Stencils Unlimited offers quick and cost-effective design and manufacturing services. Whether you need a simple SMT carrier or a complex custom fixture, our team can help you design and manufacture the right tool for your PCB project. Please email support@stencilsunlimited.com your project documentation in one of the following format. Our team will review your documents