Product profile
1.1 General description
This is a type of laser cut SMT stencil built on 0.12mm stainless steel foil with
520 mm x 420 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
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. Quick and on-time delivery;
E. Great customer service;
F. Diversified shipping method;
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: | 1254 |
| 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 |
