Electronics Forum | Tue May 23 20:39:37 EDT 2000 | Dave F
Scott: Sounds like fun: � Solder joint strength in pull/shear varies with lead geometry, solder volume, lead metal/metallization, and the test method. � Among things, IPC-TM-650 talks to getting pads off-of boards. For instance: Method 2.4.8 is for
Electronics Forum | Wed Jan 17 03:35:07 EST 2001 | Arul
We have few failures similar to the discussion in this thread, on a 50 Mil pitch, 30 Mil mill Ball PBGA. Would like to understand the mechanism of the BGA reflow process bit more. Appreciate your response to the following. 1.We sheared few solder ba
Used SMT Equipment | THT Equipment
Spare parts for Universal Radial and Axial through-hole insertion machines Model specifications: (RAD5 6360D, RAD8 6380A, RAD8 XT 6380B, VCD5 6241D, VCD8 6241F, VCD Dual 6292A, SEQ 2596A, SEQ5, SEQ8). UIC Part Number / Part Description 15754 O
Used SMT Equipment | Pick and Place/Feeders
Spare parts for Universal Radial and Axial through-hole insertion machines (RAD5 6360D, RAD8 6380A, RAD8 XT 6380B, VCD5 6241D, VCD8 6241F, VCD Dual 6292A, SEQ 2596A, SEQ5, SEQ8). UIC Part Number / Part Description 15754 O'RING 15755 O'RING 15759
Industry News | 2011-03-31 11:54:23.0
Over the past few years, pad cratering has become a vexing problem in lead-free assemblies, largely attributed to problems with the resin used to make a printed board. To help industry eliminate the defect and, at the same time, cut costs, IPC — Association Connecting Electronics Industries® has released IPC-9708, Test Methods for Characterization of PCB Pad Cratering.
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Parts & Supplies | AOI / Automated Optical Inspection
UNIVERSAL 46806212 BLADE, SHEAR, 5MM RH 46806212 BLADE, SHEAR, 5MM RH The following is a list of some of our products: if you can't find the part number, you can contact becky@hysmt.cn No. Part Number Description 104 44241608 BLOCK, 5MM V
Parts & Supplies | Assembly Accessories
UNIVERSAL INSTRUMENTS 30997610 PUSHER Part number: 30997610 Part name:Pusher Brand:Universal Instruments 30997610 PUSHER is a spare parts for Universal instument Insertion Machine, our 30997610 PUSHER with original quality, excellent durabili
Technical Library | 2015-08-13 15:52:40.0
Pad cratering has become more prevalent with the switch to lead free solders and lead free compatible laminates. This mainly is due to the use of higher reflow temperature, stiffer Pb-free solder alloys, and the more brittle Pb-free compatible laminates. However, pad cratering is difficult to detect by monitoring electric resistance since pad cratering initiates before an electrical failure occurs. Several methods have been developed to evaluate laminate materials' resistance to pad cratering. Pad-solder level tests include ball shear, ball pull and pin pull. The detailed methods for ball shear, ball pull, and pin pull testing are documented in an industry standard IPC-9708. Bansal, et al. proposed to use acoustic emission (AE) sensors to detect pad cratering during four-point bend test. Currently there is an industry-working group working on test guidelines for acoustic emission measurement during mechanical testing.
Technical Library | 2008-04-08 17:42:27.0
Concern about the failure of lead-free BGA packages when portable devices such as cell phones are accidentally dropped and a general concern about the resistance of these packages under shock loading has prompted an interest in the impact strength of the soldered BGA connection. This paper reports the results of the measurement of the impact strength of lead-free 0.5±0.01mm diameter BGA spheres on 0.42mm solder mask defined pads on copper/OSP and ENIG substrates using recently developed equipment that can load individual BGA spheres at high strain rates in shear and tension.
SMTnet Express, August 13, 2015, Subscribers: 23,186, Members: Companies: 14,558 , Users: 38,745 Pad Cratering Susceptibility Testing with Acoustic Emission Wong Boon San, Julie Silk; Agilent Technologies | Richard Nordstrom, Ph.D.; Acoustic
| https://www.eptac.com/soldertips/defining-shear-forces-for-surface-mounted-components/
SolderTips: Defining Shear Forces for Surface Mounted Components | EPTAC Skip to content Scroll Toll Free: 800.643.7822 Toggle navigation Training All Classes
ORION Industries | http://orionindustries.com/pdfs/PDS_GPVOUS_0305E.pdf
• Thermal conductivity: 1.0 W/m-K • Highly conformable, low hardness • “Gel-like” modulus • Designed for low-stress applications • Puncture, shear and tear resistant Gap Pad VO Ultra Soft is recommended for applications that require a minimum amount of pressure on
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