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Manufacturer of materials for the electronics assembly marketplace. Our RoHS-compliant products include solder pastes, fluxes, solder powder, core wire and bar solder and process support products.
New Equipment | Solder Paste Stencils
Laser cut stainless steel stencil for solder paste printing on wafer. Wafer bumping stencils are characterized by a high number of apertures which lie close together in the size of 90µm x 110µm. A package density of up to 250000 openings is not unus
ProActiv is a breakthrough process technology that dramatically improves solder paste transfer efficiency with stencil printing. It redefines the boundaries of Area Ratio rules for stencil apertures, which dictate the smallest apertures that can be p
Electronics Forum | Thu May 10 16:17:59 EDT 2001 | davef
I am unaware of any industry standard for specifying apertures for SM stencils. I am aware of IPC-7525, Stencil Design Guidelines. You can obtain it from IPC [http://www.ipc.org]. Further, it seems like there is an article on stencil design ever
Electronics Forum | Thu May 26 08:52:42 EDT 2011 | davef
Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste � Not An Option Contributed by Phil Zarrow of ITM an Independent SMT consulting firm With soldering being the dominant source of assembly
Industry News | 2018-10-18 08:40:47.0
Stencil aperture considerations for QFN chips
Industry News | 2020-09-01 12:43:28.0
Seika Machinery, Inc. is pleased to introduce the Sawa SC-BM500E Automatic Ultrasonic Stencil and Screen Cleaner. The system is specifically designed for high-density SMT applications.
Technical Library | 2014-06-05 16:44:07.0
Stencil printing capability is becoming more important as the range of component sizes assembled on a single board increases. Coupled with increased component density, solder paste sticking to the aperture sidewalls and bottom of the stencil can cause insufficient solder paste deposits and solder bridging. Yield improvement requires increased focus on stencil technology, printer capability, solder paste functionality and understencil cleaning.(...) The purpose of this research is to study the wipe sequence, wipe frequency and wipe solvent(s) and how these factors interact to provide solder paste printing yield improvement.
Swiftmode's Hyperclean Under Stencil SMT Wiper Rolls are the only product in the market that has beed developed specifically for the application. Best vacuum performance, less IPA usage and No loose fibres making the solder paste printing process mor
Assemblies Vol. 1 & 2 Editor: William Macleod Ross
Qinyi Electronics Co.,Ltd | https://www.qy-smt.com/shop/nc32-a2-nozzle-cleaning-machine-153875?page=18&category=1154&order=list_price+asc
Previous Next In the field of the semiconductor industry today, with the development of SMT, small parts into small, high-density mounting and base for reality, and future development trends will be
Heller 公司 | http://hellerindustries.com.cn/Vacuum-Void-Reduction-Reflow.pdf
. Area array package test vehicles were assembled using conventional reflow processing and a solder paste that generated substantial void content in the solder joints
