Technical Library | 2021-04-21 19:28:30.0
Voids affect the thermal characteristics and mechanical properties of a solder joint, thereby affecting the reliability of the solder interconnect. The automotive sector in particular is requiring the mitigation of solder voids in various electronic control modules to the minimum possible level. Earlier research efforts performed to decrease voids involved varying the reflow profile, paste deposit, paste alloy composition, stencil aperture, and thickness.
NanoSlic™ Gold is our top of the line spray on coating applied to our UltraSlic™ solder paste stencil, which gives previously unseen performance benefits in transfer efficiency. The NanoSlic™ Gold coating also gives the benefits of improved under-ste
New Equipment | Solder Paste Stencils
Solder Paste Printing Stencils The industry standard to manufacture solder paste stencils is to use Yag lasers with the capability to cut to a tolerance of +/- .0002". Stentech, with 12 Yag lasers across North America, can provide you the quality an
New Equipment | Cleaning Equipment
Gensonic Ultr-Sanic hand-held stencil cleaning Kit Compact and portable 2-3 minute cleaning cycle Cleans all solder pastes
Technical Library | 2023-06-12 19:00:21.0
The SMT print process is now very mature and well understood. However as consumers continually push for new electronic products, with increased functionality and smaller form factor, the boundaries of the whole assembly process are continually being challenged. Miniaturisation raises a number of issues for the stencil printing process. How small can we print? What are the tightest pitches? Can we print small deposits next too large for high mix technology assemblies? How closely can we place components for high density products? ...And then on top of this, how can we satisfy some of the cost pressures through the whole supply chain and improve yield in the production process! Today we are operating close to the limits of the stencil printing process. The area ratio rule (the relationship between stencil aperture opening and aperture surface area) fundamentally dictates what can and cannot be achieved in a print process. For next generation components and assembly processes these established rules need to be broken! New stencil printing techniques are becoming available which address some of these challenges. Active squeegees have been shown to push area ratio limits to new boundaries, permitting printing for next generation 0.3CSP technology. Results also indicate there are potential yield benefits for today's leading edge components as well. Stencil coatings are also showing promise. In tests performed to date it is becoming apparent that certain coatings can provide higher yield processing by extending the number of prints that can be performed in-between stencil cleans during a print process. Preliminary test results relating to the stencil coating technology and how they impact miniaturisation and high yield processing will be presented.
Technical Library | 2021-11-17 18:53:50.0
The demand for product miniaturization, especially in the handheld device area, continues to challenge the board assembly industry. The desire to incorporate more functionality while making the product smaller continues to push board design to its limit. It is not uncommon to find boards with castle-like components right next to miniature components. This type of board poses a special challenge to the board assemblers as it requires a wide range of paste volume to satisfy both small and large components. One way to address the printing challenge is to use creative stencil design to meet the solder paste requirement for both large and small components. ... The most important attribute of a stencil is its release characteristic. In other words, how well the paste releases from the aperture. The paste release, in turn, depends on the surface characteristics of the aperture wall and stencil foil. The recent introduction of new technology, nano-coating for both stencil and squeegee blades, has drawn the attention of many researchers. As the name implies, nano-coated stencils and blades are made by a conventional method such as laser-cut or electroformed then coated with nano-functional material to alter the surface characteristics. This study will evaluate nano-coated stencils for passive component printing, including 01005.
Industry News | 2008-07-22 13:24:53.0
Starting at less than $8000...and it's a Smart Sonic!
Industry News | 2015-10-11 16:19:40.0
Photo Stencil announces that Susan Holmes, VP engineering and customer service for Photo Stencil, will present the paper Stencil Design for Wafer Level Ball Drop and Flip Chip Assembly at the IWLPC during Session 10 on Wednesday, October 14, 2015, at 5:00 PM. The 12th Annual International Wafer-Level Packaging Conference and Tabletop Exhibition is being held at the Doubletree San Jose Airport Hotel, San Jose, CA.
Industry News | 2019-05-22 11:33:05.0
While no material is entirely lint-free, there are materials that are virtually lint-free. This is an important attribute to look for in your stencil wiping roll. Contaminated PC boards are a common problem. While the contamination itself is often thought of as a mystery to the printer operator, the cause may come from the stencil wiping roll. This is largely due to the sticky solder paste and sharp edges of the stencil’s apertures.
