Ball Grid Array X-Ray Inspection Guide - 20 Colour Charts Includes X-Ray inspection guide of satisfactory BGA solder joints and process defects, x-ray images are black and white. The posters are provided as a pdf file and can be printed as A4 or A3
New Equipment | Soldering Robots
Highly Flexible In Insertion Angles. Vertical inline soldering robot, UNIX-700FV is an ideal for irregularly shaped works into which is hard to insert the tip. The vertical multi-joint is utilized to freely change the head angle and quick operation.
Industry Directory | Consultant / Service Provider / Events Organizer / Media / Publisher / Online Resource / Training Provider
On site and online Training and consultancy in electronics manufacture. Wide range of training products which are solder worldwide by IPC, SMTA, SMART Group and others
Technical Library | 2020-10-27 02:07:31.0
For companies that choose to take the Pb-free exemption under the European Union's RoHS Directive and continue to manufacture tin-lead (Sn-Pb) electronic products, there is a growing concern about the lack of Sn-Pb ball grid array (BGA) components. Many companies are compelled to use the Pb-free Sn-Ag-Cu (SAC) BGA components in a Sn-Pb process, for which the assembly process and solder joint reliability have not yet been fully characterized. A careful experimental investigation was undertaken to evaluate the reliability of solder joints of SAC BGA components formed using Sn-Pb solder paste. This evaluation specifically looked at the impact of package size, solder ball volume, printed circuit board (PCB) surface finish, time above liquidus and peak temperature on reliability. Four different BGA package sizes (ranging from 8 to 45 mm2) were selected with ball-to-ball pitch size ranging from 0.5mm to 1.27mm. Two different PCB finishes were used: electroless nickel immersion gold (ENIG) and organic solderability preservative (OSP) on copper. Four different profiles were developed with the maximum peak temperatures of 210oC and 215oC and time above liquidus ranging from 60 to 120 seconds using Sn-Pb paste. One profile was generated for a lead-free control. A total of 60 boards were assembled. Some of the boards were subjected to an as assembled analysis while others were subjected to an accelerated thermal cycling (ATC) test in the temperature range of -40oC to 125oC for a maximum of 3500 cycles in accordance with IPC 9701A standard. Weibull plots were created and failure analysis performed. Analysis of as-assembled solder joints revealed that for a time above liquidus of 120 seconds and below, the degree of mixing between the BGA SAC ball alloy and the Sn-Pb solder paste was less than 100 percent for packages with a ball pitch of 0.8mm or greater. Depending on package size, the peak reflow temperature was observed to have a significant impact on the solder joint microstructural homogeneity. The influence of reflow process parameters on solder joint reliability was clearly manifested in the Weibull plots. This paper provides a discussion of the impact of various profiles' characteristics on the extent of mixing between SAC and Sn-Pb solder alloys and the associated thermal cyclic fatigue performance.
Industry News | 2019-06-02 18:40:27.0
SHENMAO America, Inc. introduces SMF-WC53 Water Soluble Ball-Attach Flux and Solder Sphere for use in ball-attach processes. With excellent solderability and high reliability, SHENMAO’s solder sphere can be used in a wide range of solder applications with various sizes from 50-760 μm.
Used SMT Equipment | AOI / Automated Optical Inspection
Yestech YTV-F1 AOI Model: YTV-F1 Vintage: 2008 Good Functional Condition Cameras: 6 (1 top view + 1 High mag. + 4 side cameras) [2 of side cameras are inactive] High Mag Camera Option Stadium Lighting (White+Red+Blue+Green LEDS) Software: YesV
Three solutions for virtually any application. BGA Socket Adapter Systems featuring eutectic solder balls and footprints which match BGA device are designed for high volume production applications. Pop-Top� Socket Adapter Systems features integral he
The AIP is a new Windows NT based Image Processor that surpasses all current industry standards. New functionality includes: * Automatically detects solder balls and voids. * Automatically corrects xray image distortion using dual calibration met
Technical Library | 2022-12-23 20:44:54.0
One of the upcoming reliability issues which is related to the lead-free solder introduction, are the headin-pillow solderability problems, mainly for BGA packages. These problems are due to excessive package warpage at reflow temperature. Both convex and concave warpage at reflow temperature can lead to the head-in-pillow problem where the solder paste and solder ball are in mechanical contact but not forming one uniform joint. With the thermo-Moiré profile measurements, this paper explains for two flex BGA packages the head-in-pillow. Both local and global height differences higher than 100 µm have been measured at solder reflow temperature. This can be sufficient to have no contact between the molten solder ball and solder paste. Finally, the impact of package drying is measured
Technical Library | 2021-08-25 16:34:37.0
As the traditional eutectic SnPb solder alloy has been outlawed, the electronic industry has almost completely transitioned to the lead-free solder alloys. The conventional SAC305 solder alloy used in lead-free electronic assembly has a high melting and processing temperature with a typical peak reflow temperature of 245ºC which is almost 30ºC higher than traditional eutectic SnPb reflow profile. Some of the drawbacks of this high melting and processing temperatures are yield loss due to component warpage which has an impact on solder joint formation like bridging, open defects, head on pillow.
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