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When we say SMT stencils, it refers to the mold that used for PCB assembly or SMT. There are SMT stencils or glue-in stencils which are laser-cut solder paste stencils permanently mounted in a stencil frame using a mesh border to tightly stretch the stencil foil taut in the frame.
Classification of stencils
1.Non electro-polished Laser cut stencils.
This stencil is the most common used in PCB assembly industry. This kind of stencil can be in high precision and cost will be not expensive. If there’s non BGA or QFP package, this one can be used for most PCB boards.
2.Electro-polished laser cut stencils.
Electro-polished stencil, also know as electrochemical deburring stencil is used for fine pitch.
If there is BGA or QFP package, it is better to use this one instead of laser cut stencils. Using electropolishing elicits a significant improvement in printing, particularly for very small pad apertures, as solder paste is distributed better thanks to the smoothed walls.
3.Step SMT stencils
Step-up and step-down stencils have been used in PCB industry for more than a decade. This is really helpful for integrating mixed components with different paste requirements onto a single PCB. Linked Electronics can make a step-up and step-down stencils with many different thickness onto one stencil, that is 0.08mm 0.1mm 0.12mm 0.15mm 0.2mm 0.25mm 0.3mm.
4.Nano coating stencil
Electronics devices is getting much smaller and more dedicated and many new package are now appear, BGA COB, which has the pin space less than 0.4mm. This is really a big challenge for the PCB assembly.And the traditional technique cannot meet the requirement. Thanks to the nano coating stencils made by Linked Electronics
It increases paste transfer efficiency. NanoSlic Gold is applied using a proprietary application process, thermally cured and bonded to the stencil surface and aperture walls. For nano coating stencils, less clean job required and greatly reduce the quality issue for the PCB assembly work.
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Product Details:
Payment & Shipping Terms:
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| Product Name: | Bottom Side SMT Stencil | Size: | 370*470mm |
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| Thickness: | 0.12mm | Frame: | Yes |
| Model Number: | Surface Mount SMT Stencil | Lead Time: | 2 Working Hours |
| Material: | Aluminum Framed Stencil | Application: | PCB SMT/Assembly |
| Special: | Electro-Polished Stencil | ||
| High Light: | GBP Bottom Side SMT Stencil,GBP Pcb Solder Stencil |
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If you want to surface mount components onto a PCB prototype board(printed circuit board), what is the easilest way to solder that? Outsourcing that to an PCB assembly factory in China, could be expensive. By using a soldering iron could be a hard job for you and you will have no access to pads underneath some components. The solution is to use a stencil could be a idea choice. And Linked Electronics could supply customized PCB SMT stencil with different sizes this will be much cheaper and convenient compared with framed stencil.
Solder paste is applied using the stencil onto the board, the stencil is then removed and components are positioned. By applying heat to the entire board, the solder paste flows around the component pins.
This stencils could be used many times, but please make sure it is cleaned after you use it.
Files need to be provided in standard PCB gerber files, PCB file or CAD DXF format which can be generated by most PCB design software. Please ensure the file(s) submitted contain all the paste that you need.
How to Order: At the moment, we don't have file upload functionality on our website so you will need to email Linked Electronics, the PCB supplier in China at sales@linked-elec.com
Be careful when you take out the PCB SMT stencil, because of no frame, the stencil is quite sharp.
Return and cancellation policy for SMT stencils
Because SMT stencils designs customized products, finished stencils or returned stencils have little or no value to anyone else. Therefore, we do not accept returned stencils. If you cancel an stencil order prior to manufacturing, 5USD set-up fee will be charged. If you cancel after approving the preview file but before the stencil ships, only shipping fee will be refunded.
SMT Stencil Size at Linked Electronics
| Stencil Size(unit mm) | Actual Area( unit mm) | Weight(KG) |
| 370×470 | 190×290 | 1.5KG |
| 300×400 | 140×240 | 1KG |
| 420×520 | 240×340 | 2KG |
| 450×550 | 270×370 | 2KG |
| 584×584 | 380×380 | 3.5KG |
| 550×650 | 350×450 | 3.5KG |
| 736×736 | 500×500 | 5.5KG |
| 400×600 | 220×400 | 2.5KG |
| 400×800 | 220×600 | 3.5KG |
| 400×1000 | 220×760 | 4KG |
| 400×1200 | 220×1000 | 6KG |
| 400×1400 | 220×1200 | 7KG |
| 500×700 | 320×500 | 3.5KG |
| 500×800 | 320×600 | 3.5KG |
| 500×1200 | 320×1000 | 7KG |
| 500×1400 | 320×1200 | 7.5KG |
| 500×1500 | 320×1300 | 8KG |
| 280*380 Framelss Stencil | As per your request | 1KG |
Contact Person: Mr. Jonathan
Tel: +86 755 2553 8256
Fax: 86-755-61658416
