Technical Library | 2018-05-23 12:12:43.0
Driven by miniaturization, cost reduction and tighter requirements for electrical and thermal performance, the use of lead-frame based bottom-termination components (LF-BTC) as small-outline no-leads (SON), quad-flat no leads (QFN) packages etc., is increasing. However, a major distractor for the use of such packages in high-reliability applications has been the lack of a visible solder (toe) fillet on the edge surface of the pins: because the post-package assembly singulation process typically leaves bare copper leadframe at the singulation edge, which is not protected against oxidation and thus does not easily solder-wet, a solder fillet (toe fillet) does not generally develop.
Used SMT Equipment | AOI / Automated Optical Inspection
Description: Hello and thank you for your interest in our MVP AOI Machines For Sale.We have a total of (2)Ultra 18-20 MVP Automated Optical Inspection Machines,(1)CentOS based server. They were taken off line due to new machine installation would
Career Center | Oakville, Ontario Canada | Production
Technicians / Technologists To help us continue setting the pace in a rapidly changing manufacturing environment, we need people to operate state of the art manufacturing equipment, perform failure analysis and quality inspection on a wide variety o
New Equipment | Solder Materials
A rich and line-up of solders possessed of various characteristics and properties. NSH63V forms a strong join and displays excellent resistance to heat cycle stress, thus prolonging the working life of various electrical devices. This solder has
Career Center | Oakville, Ontario Canada | Engineering,Production,Quality Control
Technicians / Technologists To help us continue setting the pace in a rapidly changing manufacturing environment, we need people to operate state of the art manufacturing equipment, perform failure analysis and quality inspection on a wide variety
Technical Library | 2023-08-04 15:38:36.0
The MicroLeadFrame® (MLF®)/Quad Flat No-Lead (QFN) packaging solution is extremely popular in the semiconductor industry. It is used in applications ranging from consumer electronics and communications to those requiring high reliability performance, such as the automotive industry. The wide acceptance of this packaging design is primarily due to its flexible form factors, size, scalability and thermal dissipation capabilities. The adaptation and acceptance of MLF/QFN packages in automotive high reliability applications has led to the development of materials and processes that have extended its capabilities to meet the performance and quality requirements. One of process developments that is enabling the success of the MLF/QFN within the automotive industry has been the innovation of side wettable flanks that provide the capability to inspect the package lead to printed circuit board (PCB) interfaces for reliable solder joints. Traditionally, through-board X-ray was the accepted method for detecting reliable solder joints for leadless packages. However, as PBC layer counts and routing complexities have increased, this method to detect well-formed solder fillets has proven ineffective and incapable of meeting the inspection requirements. To support increased reliability and more accurate inspection of the leadless package solder joints, processes to form side-wettable flanks have been developed. These processes enable the formation of solder fillets that are detectable using state-of-the-art automated optical inspection (AOI) equipment, providing increased throughput for the surface mount technology (SMT) processes and improved quality as well.
Used SMT Equipment | AOI / Automated Optical Inspection
SAKY BF-PLANET-X With a superior resolution of 10μm and scanning line color CCD camera, both AOI system provide accurate and stable inspection results. Solder fillets on components as small as the high density mounted 01005(0402) chip, as well a
Technical Library | 2023-02-13 18:56:42.0
This paper describes the results of an intensive whisker formation study on Pb-free assemblies with different levels of cleanliness. Thirteen types of as-received surface-mount and pin-through-hole components were cleaned and intentionally contaminated with solutions containing chloride, sulfate, bromide, and nitrate. Then the parts were assembled on double-sided boards that were also cleaned or intentionally contaminated with three fluxes having different halide contents. The assemblies were subjected to high-temperature/high-humidity testing (85_C/85% RH). Periodic examination found that contamination triggered whisker formation on both exposed tin and solder fillets. Whisker occurrence and parameters depending on the type and level of contamination are discussed. Cross-sections were used to assess the metallurgical aspects of whisker formation and the microstructural changes occurring during corrosion.
Industry News | 2017-01-18 05:21:35.0
This photo CD ROM provides the process or quality engineer with a source of PIHR photographs of the assembly process, components and process defects which may be used in company inspection document or training presentations. They may be simply pasted into any document for in house company use. Now over 250 photographs are provided in either jpg or tif file format for use in PowerPoint, Word inspection standards or online publications royalty free http://www.bobwillis.co.uk/product-category/photo-cd-rom/
Used SMT Equipment | AOI / Automated Optical Inspection
Offered systems: 2 x Configurations, consisted from: M22XDL460 AOI ,Power Mac G5 PC, Monitor 17” Vantage: 2006 Condition: good. Marantz Aoi Systems •Automatic Optical Inspection of PCB’s •Inspects: SMT & THT Components (presence, type, polari
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