New Equipment | Education/Training
IPC-7351B includes both the standard and an IPC-7351B land pattern calculator on CD-ROM for accessing component and land pattern dimensional data.The calculator includes the document’s mathematical algorithms so users can build a land pattern for a c
New Equipment | Rework & Repair Services
STI has qualified technicians trained in IPC 7711/7721, as well as in custom design solutions, to address your electronic rework and repair needs. STI’s services encompass both mainstream assembly technologies (surface mount and through-hole) as well
Electronics Forum | Thu Oct 30 22:29:58 EDT 2008 | davef
For most applications, a nice square [or rectangle] pad works just fine. Assemblers ship boat loads of boards with these every day. It's reasonable for tight decoupling capacitor requirement applications to use round or radiused pads for components
Electronics Forum | Thu Oct 30 15:07:40 EDT 2008 | jemills
Hello I have a new 0402 pad design on a recent board were building in future. On closer look i thought the pad was a thru hole mount , but upon closer inspection the round pads are for 0402 comps. I had a discussion with the engineer and he said
Used SMT Equipment | Board Cleaners
Speedline Technologies AquaJet Stencil Batch Cleaner and Resys ClosedLoop System For Sale The wash needs a control board. (Part Description: BL1700 CNTRL 16IN 16OUT) The Part Number to Purchase this board is 20-101-0214. Estimated cost is $349. We h
Industry News | 2011-09-06 15:20:36.0
SMTA China announced the Best Paper/Presentation and Best Exhibit Awards at its annual awards presentation held in conjunction with SMTA China and Hong Kong Chapter Breakfast Reception, which took place August 31, 2011 at the Ritz-Carlton Hotel in Shenzhen.
Industry News | 2013-06-11 19:23:26.0
The SMTA is pleased to announce that the program for SMTA International is finalized and available on-line at www.smta.org/smtai and registration is open.
Parts & Supplies | Pick and Place/Feeders
Samsung Label feeder Features: • Simple to use. • Automatically places labels using existing pick-and-place machine, Labels are simply treated like any other component. • Not only pastes labels(2D Code ,Barcode, se
Parts & Supplies | Pick and Place/Feeders
FUJI Label feeder Features: • Simple to use. • Automatically places labels using existing pick-and-place machine, Labels are simply treated like any other component. • Not only pastes labels(2D Code ,Barcode, seria
Technical Library | 2023-05-02 19:06:43.0
As 0402 has become a common package for printed circuit board (PCB) assembly, research and development on mounting 0201 components is emerging as an important topic in the field of surface mount technology for PWB miniaturization. In this study, a test vehicle for 0201 packages was designed to investigate board design and assembly issues. Design of Experiment (DOE) was utilized, using the test vehicle, to explore the influence of key parameters in pad design, printing, pick-andplace, and reflow on the assembly process. These key parameters include printing parameters, mounting height or placement pressure, reflow ramping rate, soak time and peak temperature. The pad designs consist of rectangular pad shape, round pad shape and home-based pad shape. For each pad design, several different aperture openings on the stencil were included. The performance parameters from this experiment include solder paste height, solder paste volume and the number of post-reflow defects. By analyzing the DOE results, optimized pad designs and assembly process parameters were determined.
Technical Library | 2015-06-11 21:20:29.0
The use of bottom terminated components (BTC) has become widespread, specifically the use of Quad Flat No-lead (QFN) packages. The small outline and low height of this package type, improved electrical and thermal performance relative to older packaging technology, and low cost make the QFN/BTC attractive for many applications.Over the past 15 years, the implementation of the QFN/BTC package has garnered a great amount of attention due to the assembly and inspection process challenges associated with the package. The difference in solder application parameters between the center pad and the perimeter pads complicates stencil design, and must be given special attention to balance the dissimilar requirements
LISA SPIDER robot pick and place machine 2D/3D vision components copanarity check Tape & reel for tape OUT process Tray stacker for Tray IN proce/OUT process Tape IN feeder Anyfeeder for loose component sorting More under www.aatec.ch
BEST Inc master instructor Norman Mier demonstrates how to replate gold fingers using the BEST gold contact replating kit. In this video he demonstrates how to repair, prepare and replate the finger using a gold replating solution. If you want to lea
Events Calendar | Thu Oct 03 00:00:00 EDT 2019 - Thu Oct 03 00:00:00 EDT 2019 | ,
IPC Tech Ed Webinar Series: Ball Grid Array (BGA) and Bottom Termination Component (BTC) Design and Assembly Challenges: Reflow Profiling to Achieve Low Defect Rates and Successful Assembly! – Part 2
Events Calendar | Wed May 31 00:00:00 EDT 2023 - Wed May 31 00:00:00 EDT 2023 | Holtsville, New York USA
Long Island Chapter Meeting: Fine Feature Paste Printing, Stencil Design and Solder Technology
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/ipc7351-and-smd-pad-shapes_topic2590.html
IPC-7351 and SMD Pad Shapes - PCB Libraries Forum Forum Home > Libraries > Footprints / Land Patterns New Posts FAQ Search Events Register Login IPC-7351 and SMD Pad Shapes
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