Printed Circuit Board SMT Stencil Laser Cut Stainless Steel Shim
for CSP Package
1.1 General description
This is a type of SMT stencil (100% laser cut) built on 0.12mm
stainless steel foil with aluminum frame 420 mm x 520 mm x 20mm
dimension. It’s fabricated per IPC 7525A using supplied Gerber
data, squeegee area locating in the center. 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
The data file is used directly to produce and reduce the error
rate;
The opening position accuracy of SMT template is very high: the
whole process error is ≤ ±4 μ m;
The opening of SMT template has geometric figure, which is
advantageous to the printing and forming of tin paste;
Quick turnaround prototype;
Door to door shipment service;
Delivery on time: >98%
Customer complaint rate: <1%
Hassle-free, one-to-one after-sales service;
More than 15 years of experience;
1.3 Applications
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 | 0.05mm, 0.06mm, 0.08mm, 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm |
| Aperture configured | Laser cut |
| Appearance | Engraving and electro polishing |
| Fiducial mark | Through hole |
| Service area: | Worldwide |
| Quantity of open pads: | 1620 |
| 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 Holes Design for SMT 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 |
