Product profile
1.1 General description
This is a type of laser cut SMT stencil built on 0.12mm stainless steel foil with
420 mm x 520 mm x 20mm dimension. It’s fabricated per IPC 7525A using
supplied Gerber data, squeegee area locating in the center. 4 sides of fiducal
marks are through holes to suit for the SMT machine. It’s packed with KK carton
(hard card) and usually 2 stencils are packed for shipment.
1.2 Features and benifits
A. The data file is used directly to produce and reduce the error rate;
B. The opening position accuracy of SMT template is very high: the whole process
error is ≤ ±4 μ m;
C. The opening of SMT template has geometric figure, which is advantageous to
the printing and forming of tin paste;
D. ISO9000 certified manufacturing factory;
E. 12 hours quotation;
F. Quick Lead time: 1-2 days;
G. No MOQ, low cost for prototypes and small runs quantity;
1.3 Application
SMD package such as PLCC,QFP,0402,0201,BGA,Flip Chip
1.4 Parameter and data sheet
| Dimension: | 520 x 420 mm =1 PCS |
| Structure | Stencil foils with aluminum frame |
| Base material | Stainless steel shim |
| Foil Thickness | 0.12mm |
| Aperture configured | Laser cut |
| Appearance | Engraving and electro polishing |
| Fiducial mark | Through hole |
| Service area: | Worldwide |
| Quantity of open pads: | 761 |
| Advantages: | a) High precision dimension; b) Good shape on the window; c) Hole wall is smoother. |
| Application: | CSP, BGA, 0.5mm QFP etc. package |
1.5 Opening Hole Design for Stencil
| Component Type | Pitch | Soldering Width | Soldering Length | Opening Width | Opening Length | Shim Thickness |
| PLCC | 1.27mm | 0.65mm | 2.00mm | 0.60mm | 1.95mm | 0.15-0.25mm |
| QFP | 0.635mm | 0.35mm | 1.50mm | 0.32mm | 1.45mm | 0.15-0.18mm |
| QFP | 0.50mm | 0.254-0.33mm | 1.25mm | 0.22-0.25mm | 1.20mm | 0.12-0.15mm |
| QFP | 0.40mm | 0.25mm | 1.25mm | 0.20mm | 1.20mm | 0.10-0.12mm |
| QFP | 0.30mm | 0.20mm | 1.00mm | 0.15mm | 0.95mm | 0.07-0.12mm |
| 0402 | | 0.50mm | 0.65mm | 0.45mm | 0.60mm | 0.12-0.15mm |
| 0201 | | 0.25mm | 0.40mm | 0.23mm | 0.35mm | 0.07-0.12mm |
| BGA | 1.27mm | 0.80mm | | 0.75mm | 0.75mm | 0.15-0.20mm |
| BGA | 1.00mm | 0.38mm | | 0.35mm | 0.35mm | 0.10-0.12mm |
| BGA | 0.50mm | 0.30mm | | 0.28mm | 0.28mm | 0.07-0.12mm |
| Flip Chip | 0.25mm | 0.12mm | 0.12mm | 0.12mm | 0.12mm | 0.08-0.10mm |
| Flip Chip | 0.20mm | 0.10mm | 0.10mm | 0.10mm | 0.10mm | 0.05-0.10mm |
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Laser Stencil Built on 520 X 420mm Fame with 0.12mm Stainless Steel Foil Images
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