Industry Directory | Manufacturer / Research Institute / Laboratory / School
Manufacturer of surface deposition and plasma surface cleaning and etching equipment offering reliable, repeatable cleaning and etching of PCBs and other materials.
SMT256EP solderable adhesive is self-leveling and self-soldering adhesives, which has been designed for high temperature Pb-free application. By comparison with conductive adhesives (Ag), SMT256EP solderable adhesive has higher stable electrical and
New Equipment | Test Equipment - Bond Testers
Many bond strength tests require a means to grip the part so that the strength of its bond can be tested. In many of these applications the geometry and force of the grip must be precisely controlled to ensure sufficient load can be applied to the bo
Electronics Forum | Tue Oct 27 05:51:28 EST 1998 | jacqueline coia
Could you please tell what are the current avaliable standards, if any (BSI/IPC) for a measurement value on the mechanical pull strength on SMT IC leads after reflow. Thanks in advance, Jack.
Electronics Forum | Thu Nov 03 12:48:14 EST 2005 | Rosewood
We have some no sticks, but that is actually a good thing because we have NSD. During process control audits we found that pull strengths to the board dropped off. We build a military application that requires higher bond strenghts. Low pull streg
Industry News | 2017-06-05 15:45:06.0
YINCAE has developed a new innovative solder joint encapsulant paste. Designed to be used for mass production via dispensing or printing, SMT 256EP replaces traditional solder paste, flux, and underfill. SMT 256EP enhances solder joint strength by 5 to 10 times and has demonstrated high pull strength at both room and high temperatures (280°C).
Technical Library | 2023-08-04 15:27:30.0
A designed experiment evaluated the influence of several variables on appearance and strength of Pb-free solder joints. Components, with leads finished with nickel-palladium-gold (NiPdAu), were used from Texas Instruments (TI) and two other integrated circuit suppliers. Pb-free solder paste used was tin-silver-copper (SnAgCu) alloy. Variables were printed wiring board (PWB) pad size/stencil aperture (the pad finish was consistent; electrolysis Ni/immersion Au), reflow atmosphere, reflow temperature, Pd thickness in the NiPdAu finish, and thermal aging. Height of solder wetting to component lead sides was measured for both ceramic plate and PWB soldering. A third response was solder joint strength; a "lead pull" test determined the maximum force needed to pull the component lead from the PWB. This paper presents a statistical analysis of the designed experiment. Reflow atmosphere and pad size/stencil aperture have the greatest contribution to the height of lead side wetting. Reflow temperature, palladium thickness, and preconditioning had very little impact on side-wetting height. For lead pull, variance in the data was relatively small and the factors tested had little impact.
Technical Library | 2021-12-29 19:37:20.0
The purpose of this study was to compare the strength of the bond between resin and glass cloth for various composites (laminates) and its dependence on utilized soldering pad surface finishes. Moreover, the impact of surface finish application on the thermomechanical properties of the composites was evaluated. Three different laminates with various thermal endurances were included in the study. Soldering pads were covered with OSP and HASL surface finishes. The strength of the cohesion of the resin upper layer was examined utilizing a newly established method designed for pulling tests.
SMT256EP solderable adhesive is self-leveling and self-soldering adhesives, which has been designed for high temperature Pb-free application. By comparison with conductive adhesives (Ag), SMT256EP solderable adhesive has higher stable electrical and
SMTnet Express, February 19, 2015, Subscribers: 22,404, Members: Companies: 14,224, Users: 37,735 Numerical Study on New Pin Pull Test for Pad Cratering Of PCB Billy Hu, Jesus Tan - Flextronics Pad cratering is an important failure mode besides
| https://www.eptac.com/faqs/ask-helena-leo/ask/gold-wire-bond-failing-pull-test
? Does it have a Nickel underplate? How thick is the gold plating? I’ve checked Mil-Std-883F method 2011.7 Bond Strength (Destructive Bond Pull Test
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/proceedings_abstract.cfm?PROC_ID=5495
. Excellent Cu wire-bonding reliability was achieved under the optimized electroless Pd plating conditions. The pull strength of the Cu wire was insufficient when a corrosion layer was formed at the electroless Ni-P surface
