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Solder Stencils

Stencil

We offer of a large selection of stencils cut with laser, etching or mechanical means.  The stencils include SMT solder paste stencils, SMT BGA and rework stencils, SMT prototype stencils and other types of screens & stencils required for solder paste printing.  Our stencils are all made from stainless steel.

We support stencils with various thickness and in standard or customized size.  Both single-sided and double-sided paste can also be supported

ETAG Circuits is now offering stencils as part of PCBExpress, Full Feature and PCB123 orders. Simply place your PCB order as usual, and choose from a variety of stencil types and sizes, one to fit each of your stencil requirements. See the chart below for more details on the stencils available. Download the new whitepaper - Using Stencils to Simplify the Printed Circuit Board Assembly Process today!

Introduction to SMT Stencils:

The sole purpose of an SMT stencil is to transfer solder paste to a bare circuit board. A stainless steel foil is laser cut creating an opening for every surface mount device on the board. Once the stencil is properly aligned on top of the board, solder paste is applied over the openings (making a single pass, using a metal squeegee blade). When the stainless steel foil is separated from the board, solder paste will remain, ready for placement of the SMD. This process, as opposed to hand soldering methods, ensures consistency and saves time.

Stainless steel foil thickness and aperture opening size control the volume of paste deposited on the board. Too much solder paste causes solder balling, bridging, and tomb-stoning. A lack of solder paste creates insufficient solder joints. All of which compromise the electrical functionality of the board.

Proper foil thickness is chosen based on the types of devices being loaded on the board. Component packages such as 0603 capacitors or 0.020" pitch SOIC's, will require a thinner solder paste stencil than larger packages such as 1206 capacitors or 0.050" pitch SOIC's. Solder paste stencil thickness ranges from 0.001" to 0.030". The typical foil thickness used on the majority of boards is anywhere from 0.004" to 0.007".

Learn how to you use prototype stencils or read PCB stencil FAQ for more information.

How to Use Prototype Stencils

Follow these quick and easy instructions to start using your new prototype stencil. If you still have questions about our SMT stencil products, please contact us at 800-228-8198. ETAG Circuits is committed to providing the best customer support in the printed circuit board industry. We're here 24/7/365.

More Prototype Stencil Information:

 

1. Example of the prototype stencil as you will receive it.

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2. Place the large L-shaped board fixture on a flat surface and tape it down to prevent movement.

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3. Place the PCB into the L-shaped fixture.

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4. Place the small L-shaped board fixture in the opposite corner and tape down to prevent movement.

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5. Align the stencil over the SMT pads and tape the flat edge to the L-shaped bracket.

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6. Apply a bead of solder paste along one edge of the prototype stencil.

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7. Using squeegee, make a single pass over the apertures to deposit paste.

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8. Remove board from fixture.

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9. Using the vacuum pick & place tool, place components in the paste.

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10. Place temperature marker on the board. Using preferred method, (toaster oven, hot plate, heat gun, etc.) heat board to the paste manufactures recommendations for re-flow solder. The temp marker will indicate temp by changing color.

PCB Stencils Frequently Asked Questions (FAQs)

Why would I need a PCB stencil?

The PCB stencil thickness is determined by the smallest component land pattern. Stencils replace hand soldering of surface mount devices, and the inconsistencies created by hand soldering.

How do I choose my stencil thickness?

The stencil thickness is determined by the smallest component land pattern. If you are not sure, our design staff can choose the optimum thickness based on the data you supply.

What are home base apertures and why would I need them?

Home base apertures are used to control solder balling and tomb-stoning of chip components.

What are Trapezoidal Apertures and why would I need them?

Trapezoidal Apertures are created by distorting the beam on the laser, creating a draft in the aperture wall. Trapezoidal Apertures are effective if you plan on a long dwell time between printing of solder paste and placement of components. The taper in the aperture wall causes the paste to sit on top of itself, rather than sliding out the sides.

What are fiducials? Do I need them on my PCB stencil?

Fiducials are alignment marks. If your screen printer is equipped with a vision system, fiducials half cut in the stencil to allow for the printer to automatically align the board with the stencil. If you are manually aligning the stencil with the board, you could either full cut the fiducials or just use the surface mount pads.

Solder Stencil types and sizes

Avoid the time consuming task of hand soldering your surface mount components, when you choose one of our SMT stencils below, for your printed circuit board.

Prototype SMT Stencil Prototype SMT Stencil (up to 10" x 12"), squeegee, and board holder
Oversized Prototype Stencil Prototype SMT Stencil (exceeding 10" x 12"), squeegee, and board holder.
Prototype Stencil Kit- Leaded Prototype SMT Stencil (up to 10" x 12"), leaded solder paste, pick & place tool, temperature marker (331° thru 379°), 1 pair of gloves, and 2 alcohol wipes.
Oversized Prototype Stencil Kit-Leaded Prototype SMT Stencil (exceeding 10" x 12"), leaded solder paste, pick & place tool, temperature marker (331° thru 379°), 1 pair of gloves, and 2 alcohol wipes.
Prototype Stencil Kit- Lead Free Prototype SMT Stencil (up to 10" x 12"), lead free solder paste, pick & place tool, temperature marker (390° thru 450°), 1 pair of gloves, and 2 alcohol wipes.
Oversized Prototype Stencil Kit-Lead Free Prototype SMT Stencil (exceeding 10" x 12"), lead free solder paste, pick & place tool, temperature marker (390° thru 450°), 1 pair of gloves, and 2 alcohol wipes.
Hand Stencil Single component rework stencil, bent up on two sides for handling
Metal Charge Solder paste stencil thickness less that 0.004" and over 0.008"
Frameless Stencil for use in a Universal Frame Frameless stencil to fit an interchangeable plate system. Includes SMT, PRO 2, QTS, SPR
Surface Finishes Tin/Lead, Silver, Gold fingers, ENIG, OSP, Hard Gold, Soft Gold
29 x 29 Low Profile Framed Solder Stencil Low Profile (1/2" thick frame) 29 x 29 framed stencil
8 x 10 Framed Stencil ast Aluminum 8 x 10 framed solder stencil - maximum squeegee area 5"x7"
12 x 12 Framed Stencil Cast Aluminum 12 x 12 framed solder stencil- maximum squeegee area 9"x9"
12 x 17 Framed Stencil Cast Aluminum 12 x 17 framed solder stencil - maximum squeegee area 9"x14"
15 x 15 Framed Stencil Cast Aluminum 15 x 15 framed solder stencil - maximum squeegee area 12"x12"
20 x 20 Framed Stencil Cast or Extruded 20 x 20 framed solder stencil - maximum squeegee area 17"x17"
29x29 Framed Stencil Extruded Aluminum 29 x 29 framed solder stencil - maximum squeegee area 22"x22"

SMT Solderpaste Stencils

Call Us at 88349389 or e-mail us at This email address is being protected from spambots. You need JavaScript enabled to view it. for Details!

SMT Stencils

All of our SMT Stencils stencils are 100% laser-cut type 304 full-hard stainless steel, ensuring the finest quality finish on the market today. We use a .001" laser beam with 98% overlap creating an extremely smooth hole that provides the best paste release. Most stencil fabricators use a .003" laser leaving mouse bites on the aperture edge. You can choose a prototype stencil, a frameless foil stencil, or a rigid permanently mounted stencil. Both the frameless and framed stencils come in various sizes to accommodate your printer and stencil requirements.

SMT Solderpaste Stencil Types Available:

a. Prototype (Low-volume manual printing. Ideal for prototypes)
NEW Low Price...Now Only $99 w/$30 discount!
When prototyping dictates fast action with minimal cost, our prototype stencils are the best solution.  Prototype Stencils gives you a quality stencil and framework so you can handle assembly from the convenience of your own desk.

b. New Assembly Pro - Prototype Stencil - Innovative Product
A companion to the Prototype stencil, the AssemblyPro helps speed up hand assembly of double-sided boards requiring surface mount.  It features a nested area to hold the board with cut outs to accommodate the components that have been placed on the bottom side.   Each AssemblyPro Fixture is custom designed to fit your board.  No more cutting or expensive bills from a contract manufacturer.

c. NEW Prototype Stencil Kit (with leaded or lead/free solderpaste)
Includes Prototype Stencil (10" x 12" and under), one board holder, leaded or lead-free solder paste (must specify), temperature marker, squeegee, ESK-safe gloves and alcohol wipe. 

d. NEW Pick and Place Tool - Handy and convenient forlow quantity prototype assembly using the Prototype Stencils.  Re-usable, includes vacuum bulb and vacuum cips with diameters of 3/8", 1/4", and 1/8".

e. Framed (Also called "Glue-in" or Mounted Stencils)
Framed stencils are laser-cut stencils designed for high volume screen-printing. With a framed stencil, your stencil is securely mounted to either a cast or extruded aluminum stencil frame a stencil frame using a mesh border, allowing for complete control.

f. Frameless - Foil/Plate Only (for universal frames)
Foil or Plate Only stencils are designed to work within interchangeable plate or "universal" systems. Also referred to as "reusable", these stencils do not need to be permanently glued into a frame.

g. Frameless - Foil/Plate Only (for hand printing)
For times when you need precise control for smaller production runs, our Foil or Plate Only stencils are ideal. These frameless stencils allow you to handprint with precision just the amount you need and can be stored conveniently.

h. Pro-Frame™ Universal Frame with Foil
Our Pro-Frame™ Universal Frame has been a leader in universal frame design. Pro-Frame™ stencils are produced without a frame for use in the ProFrame II ™. They offer convenient shipping and provide money-saving storage - all while still delivering superior quality and performance.

To Order a Stencil, Call Us 88349390

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Design by: Electronic Trade of Arsh Gostar Co. (ETAG) Multimedia Studio :: amir abdi :: 2016