Cnc machining

PCB assembly fixtures (also referred to as PCB assembly tooling) are used to support and protect the printed circuit boards and electronic components during the PCB assembly process. Our SMT carriers and wave solder pallets are made with Durostone®, a heavy-duty (Electro-Static Discharge) ESD composite material. This material exhibits good machinability and is able to withstand the high temperatures and the chemicals associated with soldering applications.

Our technical team uses state-of-the-art CNC machines to fabricate our PCB assembly fixtures.

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The Prototype SMT Stencil Fixture was cleverly designed to provide the following benefits:
  • Adjustable board support
  • Designed for double sided PCBs
  • Enhanced registration resulting in better printing
  • Stencil tension resulting in better printing
  • Vertical lift preventing paste smear when removing the stencil
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Surface Mount Carriers

Surface mount carriers are extremely versatile. They can be used to support, protect and transport PCBs of different shapes and sizes including flex and rigid-flex PCBs through the SMT process. Surface mount carriers can significantly decrease setup time and improve handling.
Stainless steel fixtures should not be used during the reflow process.

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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.

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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.

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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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Custom Fixtures

Stencils Unlimited offers cost effective design and manufacturing tooling services. Whether you just need a simple surface mount carrier or a complex custom fixture, we will create the right tool for your project. Simply give us a call or send us an email. We are here to help.
(800) 348-9250

Data Requirements

The data needed to complete a tooling project varies but in general we are going to need the following:

  • Gerber files – Standard or Extended Gerber (RS-274-D or RS-274-X)
  • Fabrication and assembly drawings
  • Bill of Material (BOM) in Excel format