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Shenzhen Wisdomshow Technology Co,Ltd.

Industry Directory | Manufacturer

BGA repair machine Factory,bga reballing station,bga repair tools ,bga rework station,iphone repair machine

Minimizing Voiding In QFN Packages Using Solder Preforms

Technical Library | 2012-07-27 11:18:29.0

First published in the 2012 IPC APEX EXPO technical conference proceedings. The focus of this paper will quantify the preform requirements and process adjustments needed to use preforms in a standard SMT process. In addition, experimental data showing vo

Indium Corporation

JOT Optical BGA Rework Station FG-

JOT Optical BGA Rework Station FG-

Parts & Supplies | Repair/Rework

Three independent heaters control systems. FG-P6000 is available heating portion of the PCB board by hot-air circulate both from top and bottom at the same time. With large IR bottom heating, it can completely avoid PCB deformation during reworking

Goodluck Electronic Equipment Co.,Ltd

FLEXTRON CIRCUIT ASSEMBLY

Industry Directory | Manufacturer

50K+ sq ft ESD safe plant, O'Hare area,PCB assembly, AeroSpace AS9100, Medical ISO 13485 and ISO 9001 certified, 01005, 0201, uBGA, PoP, QFN, DFN, CSP, QFP, TQFP placements. State-of-the-art equipment. Aluminum PCBA, Large Boards

AGILITY mfg

Industry Directory | Consultant / Service Provider / Manufacturer

A Contract Manufacturing company specializing in Printed Circuit Board Assembly, Quick Turn Prototype Services, and Direct Fulfillment.

Packaging Engineer

Career Center | Sherman, Texas USA | Engineering,Production,Research and Development,Technical Support

SMT Packaging Engineer: Location: Texas - Sherman , TX Group: HVAL Degree Requirements: BS ME/ChemE/Materials The person in this position will have the ability to make very significant financial contributions to TI because this is a very critic

Texas Instruments

Pad Design and Process for Voiding Control at QFN Assembly

Technical Library | 2024-07-24 01:04:35.0

Quad Flat No Leads (QFN) package designs receive more and more attention in electronic industry recently. This package offers a number of benefits including (1) small size, such as a near die size footprint, thin profile, and light weight; (2) easy PCB trace routing due to the use of perimeter I/O pads; (3) reduced lead inductance; and (4) good thermal and electrical performance due to the adoption of exposed copper die-pad technology. These features make the QFN an ideal choice for many new applications where size, weight, electrical, and thermal properties are important. However, adoption of QFN often runs into voiding issue at SMT assembly. Upon reflow, outgassing of solder paste flux at the large thermal pad has difficulty escaping and inevitably results in voiding. It is well known that the presence of voids will affect the mechanical properties of joints and deteriorate the strength, ductility, creep, and fatigue life. In addition, voids could also produce spot overheating, lessening the reliability of the joints.

Indium Corporation

Rework of Leadless Devices Course

Training Courses | | | PCB Rework and Hand Soldering Courses

The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.

BEST IPC Training

Common Process Defect Identification of QFN Packages

Technical Library | 2019-07-23 22:33:47.0

The Quad Flat Pack No Leads (QFN) style of leadless packaging [also known as a Land Grid Array (LGA)] is rapidly increasing in us e for wireless, automotive, telecom and many other areas becaus e of its low cost, low stand-off height and excellent thermal and electri cal properties. With the implementation of any new package type, there is always a learning curve for its use in design and processing as well as for the Process and Quality Engineers who have to get to grips with the challenges that these packages bring. Therefore, this paper will provide examples of the common process defects that can be seen with QFNs /LGAs when using optical and x-ray inspection as part of manufacturing quality control. Results of trials conducted on four PCB finishes and using vapour phase and convection reflow will be discussed.

Nordson DAGE

Body of Knowledge (BOK) for Leadless Quad Flat No-Lead/Bottom Termination Components (QFN/BTC) Package Trends and Reliability

Technical Library | 2023-09-18 14:10:01.0

As with many advancements in the electronics industry, consumer electronics is driving the trends for electronic packaging technologies toward reducing size and increasing functionality. Microelectronics meeting the technology needs for higher performance, reduced power consumption and size, and off the- shelf availability. Due to the breadth of work being performed in the area of microelectronics packaging/components, this report limits it presentation to board design, manufacturing, and processing parameters on assembly reliability for leadless (e.g., quad flat no-lead (QFN) or a generic term of bottom termination component (BTC)) packages. This style of package was selected for investigation because of its significant growth, lower cost, and improved functionality, especially for use in an RF application.

NASA Office Of Safety And Mission Assurance


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