Electronics Forum | Fri Jun 08 15:37:41 EDT 2007 | ck_the_flip
Jim: I have limited knowledge, but here's what I know: 1. Yes, it's a standard process. In today's SMTNet, it's rarely mentioned, and few people reply to postings. 2. Nope. It's a "specialty" piece of equipment for most CEM's. Depending on you
Electronics Forum | Wed Nov 12 06:23:09 EST 2008 | griffin
One thing to consider regarding the capacitor, The leads are not 100% straight beneath the plastic bottom part. And if you align with regards to the two leads, the leads will be aligned to the pads of your board, but the body of the capacitor is look
Industry News | 2011-01-18 13:46:21.0
Time and again, a major challenge lies in attaching integrated circuits (ICs) to highly integrated circuit board substrates in a space-saving manner. Würth Elektronik took this challenge on and found an ideal solution with the ESC (encapsulated solder connection) process. The chips are soldered and at the same time glued 'face-down" in their exact position.
Industry News | 2016-08-23 16:30:00.0
SHENMAO BGA Solder Spheres for PBGA, CBGA, TBGA, MBGA, CSP and Flip Chip Assemblies are made by UMT (Ultra Micron Technology) from highly pure metals produced to various exact Alloy compositions using Piezoelectric Droplet Jet Technology in high volumes to accurate diameter uniformity, bright shiny surface finishes and high quality sphericity. Various diameters (0.76, 0.6, 0.5, 0.45, 0.3, 0.25, 0.1, 0.08, 0.07, 0.06 and 0.05 mm Dia.) are available at affordable low cost from 11 worldwide SHENMAO Technology locations.
Technical Library | 2013-04-11 15:43:17.0
With the explosion of growth in handheld electronics devices, manufacturers have been forced to look for ways to reinforce their assemblies against the inevitable bumps and drops that their products experience in the field. One method of reinforcement has been the utilization of underfills to "glue" certain SMDs to the PCB. Bumped SMDs attached to the PCB with a no-clean soldering process offer the unavoidable scenario of the underfill coming in contact with a flux residue. This may or may not create a reliability issue... First published in the 2012 IPC APEX EXPO technical conference proceedings
Technical Library | 2018-01-17 22:47:02.0
Fine pitch copper (Cu) Pillar bump has been growing adoption in high performance and low-cost flip chip packages. Higher input/output (I/O) density and very fine pitch requirements are driving very small feature sizes such as small bump on a narrow pad or bond-on-lead (BOL) interconnection, while higher performance requirements are driving increased current densities, thus assembling such packages using a standard mass reflow (MR) process and maintaining its performance is a real and serious challenge. (...) In this study a comprehensive finding on the assembly challenges, package design, and reliability data will be published. Originally published in the SMTA International 2016
Events Calendar | Wed Aug 16 00:00:00 EDT 2017 - Sat Aug 19 00:00:00 EDT 2017 | Harbin, China
ICEPT 2017, The 18th International Conference on Electronic Packaging Technology
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/06/Vacuum-Fluxless-Reflow-Technology-for-Fine-Pitch.pdf
. The formic acid vapor reduces tin oxides on the surfaces of the bumps to its elemental state. Thus, the formic acid vapor takes the place of conventional fluxes
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/proceedings_abstract.cfm?PROC_ID=4722
), the Ag3Sn precipitate morphology and on the mechanical properties of micro Cu pillar bumps were examined. The shear strength performance of micro Cu pillars with three different bump diameters (30µm, 50µm, and 100µm) was also evaluated
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