New Equipment | Assembly Services
One-stop PCB and Assembly Manufacturers Specialized in one-stop PCB and Assembly manufacturing, Heros Electronics is committed to providing quick-turn high quality custom PCB and smt assembly to our customers all over the world with affordable pri
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New Equipment | Assembly Services
One-stop PCB and Assembly Manufacturers Specialized in one-stop PCB and Assembly manufacturing, Heros Electronics is committed to providing quick-turn high quality custom PCB and smt assembly to our customers all over the world with affordable pri
New Equipment | Assembly Services
Supplier: Shenzhen Grande Electronics Layers: 4 PCB：FR-4/1.6mm, 1oz finished copper Project: Parking Equipment and Systems PCB Assembly Process | Introduction To PCBA | PCBA Grande Surface Treatment: ENIG PCBA Lead time:2-3 weeks Packing: Anti-stati
New Equipment | Assembly Services
Supplier: Shenzhen Grande Electronics Layers:2 Application: Level Transmitter PCB Assembly - Electronic Contract Manufacturing - Grande Electronics PCB: FR4/1.0mm, 1oz finished copper Min Via: 0.2mm Surface Treatment: HASL PCBA Lead time: 2-3 weeks
New Equipment | Assembly Services
Supplier: Shenzhen Grande Electronic Layers: 4 Application: Weighing Scales PCB Assembly - Fast Electronic Prototype PCB:FR-4/1.6mm, 2oz finished copper Specialty: Large current, High heat, heavy components Surface Treatment: HASL PCBA Lead time: 3-
New Equipment | Assembly Services
China Double Sided Circuit Boards Fabricaiton and Assembly PCBA Turnkey Manufacturer 2 Layers circuit boards PCB FR4 1.6mm PCB fabrication and assembly 1oz PCB copper thickness Shenzhen PCB and PCBA manufacturer China turnkey contract electroni
Industry Directory | Manufacturer
Vexos China offers full turnkey electronics manufacturing solutions from printed circuit board assembly to final mechanical assembly, test, box build, and shipping of finished products to Local and Global OEMs in multiple markets.
Industry News | 2009-02-11 23:22:16.0
ndium8.9HF Solder Paste is a halogen-free Pb-free solder paste with unsurpassed print transfer efficiency and response-to-pause printing. The advanced rheology of Indium8.9HF is ideally suited for today's advanced 0.4mm pitch and 0201 technologies.
Industry News | 2014-05-13 17:01:55.0
Indium Corporation's Graham Wilson, applications engineer, will present at Brasage in Brest, France on Friday, May 23. Wilson's presentation, Elimination of Head-in-Pillow in PoP Assembly: A Flux Approach, discusses eliminating head-in-pillow defects in the package-on-package (PoP) assembly process by engineering unique attributes of the flux chemistries of dipping fluxes and pastes.
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.
