SIPAD Solid Solder Deposit (ssd) is a Siemens patented process that pre loads the pc board surface mount pads with solder in a solid form. Boards are printed, reflowed without components producing a predictable repeatable meniscus. SIPAD boards a
New Equipment | Solder Materials
Alpha® offers a full line of technologically advanced solder pastes developed to provide high throughput and yield, and lowest cost of ownership for a wide range of applications. Our offering includes leading lead-free, no-clean, halogen-free solder
Electronics Forum | Wed Apr 05 11:55:28 EDT 2006 | Cristina Oanca
I am working on a Substrate attach process. The package is gold plated, the preform is AuSn and the backing on the substrate is PdAg. I am using a Sikama reflow furnace. The profile has a 50 sec dwell time. I am over 280 degees C for a little over 1
Electronics Forum | Tue Jan 23 16:22:01 EST 2007 | asir
I'm looking for a PbF solder paste with similar characteristic as the 63/37Pb alloy. What alloy composition would you recommend?
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The requirement to reconsider traditional soldering methods is becoming more relevant as the demand for bottom terminated components (QFN/BTC) increases. Thermal pads under said components are designed to enhance the thermal and electrical performance of the component and ultimately allow the component to run more efficiently. Additionally, low voiding is important in decreasing the current path of the circuit to maximize high speed and RF performances. The demand to develop smaller, more reliable, packages has seen voiding requirements decrease below 15 percent and in some instances, below 10 percent.Earlier work has demonstrated the use of micro-fluxed solder preforms as a mechanism to reduce voiding. The current work builds upon these results to focus on developing an engineered approach to void reduction in leadless components (QFN) through increasing understanding of how processing parameters and a use of custom designed micro-fluxed preforms interact. Leveraging the use of a micro-fluxed solder preform in conjunction with low voiding solder paste, stencil design, and application knowhow are critical factors in determining voiding in QFN packages. The study presented seeks to understand the vectors that can contribute to voiding such as PCB pad finish, reflow profile, reflow atmosphere, via configuration, and ultimately solder design.A collaboration between three companies consisting of solder materials supplier, a power semiconductor supplier, and an electronic assembly manufacturer worked together for an in-depth study into the effectiveness of solder preforms at reducing voiding under some of the most prevalent bottom terminated components packages. The effects of factors such as thermal pad size, finish on PCB, preform types, stencil design, reflow profile and atmosphere, have been evaluated using lead-free SAC305 low voiding solder paste and micro-fluxed preforms. Design and manufacturing rules developed from this work will be discussed.
ALPHA® Preforms with solder paste adds solder volume.
SIPAD Systems Incorporated (SSi) is the Exclusive Supplier of SIPAD solid solder deposit in North America and the only SIPAD Solid Solder Deposit (SSD) coating service bureau in the world. SIPAD Systems Inc. supplies SIPAD solid solder coating servi
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� Heading daily morning meeting with all program managers, materials manager, test engineering manager, process engineering manager, quality control manager, planning manager, stock room manager, shipping department head. Discussion about incoming or
Surface Mount Technology Association (SMTA) | https://www.smta.org/news/smta_calendar/calendar.cfm
. Export to Calendar Outlook iCal Google June 24 Europe Chapter: Solder Preform World - Not New Technology but a Very Interesting Option
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