New Equipment | Solder Materials
KappFreeA the acid cored convenient one-step, Lead-free, Cadmium-free, Potable Water Solder produces strong and ductile joints on Copper and Brass without requiring additional liquid or paste flux. The internal acid flux is released on heating to rem
Permabond structural acrylic adhesives are suitable for bonding a wide variety of materials. The rapid, room-temperature cure coupled with high strength and durability make these adhesives ideal for demanding applications where speed and ease of appl
Electronics Forum | Tue Mar 22 07:39:05 EST 2005 | davef
There is no standard. This is a relative test. If you wish to do tests of this kind, we suggest to pay attention to the following points: * Shear strength of soft solder depends on the deformation speed applied. The faster the material is deformed t
Electronics Forum | Thu Dec 30 21:22:12 EST 1999 | Jim
Mike, Thanks for the reply. It's not really a matter of slope. It is the long term thermomechanical fatigue that the solder joint undergoes as a result of repeated severe temperature swings, while the product is in use. Non-leaded parts are suscep
Used SMT Equipment | Depanelizers / Routers
Details: Cab Maestro 2M PCB Separator, Motorized Model: Maestro 2M MAESTRO 2M motorized Separates large numbers of PCBs without fatigue of the operator. The lower circular blade is driven by a motor. The PCB is fed between the circular blades whe
Industry News | 2018-08-16 20:05:44.0
Indium Corporation Research Chemist, Mary Ma, and Area Technical Manager for Eastern China, Wisdom Qu, will present their papers at the 2018 SMTA China South Technology Conference on Aug. 28 in Shenzhen, China. Their papers were voted by their peers as two of the top five “Best Papers” presented in recent years at SMTA South China and SMTA East China, earning them the opportunity to present them again at this year's show.
Industry News | 2017-02-07 15:46:59.0
The best technical conference paper of IPC APEX EXPO® 2017 has been selected. Voted on through a ballot process by members of the IPC APEX EXPO Technical Program Committee, the paper authors will receive their awards during the opening keynote session on Tuesday, February 14.
Technical Library | 2021-08-11 00:55:44.0
In this article, the influence of shrinkage tensile stress in potting materials on the anti-overload performance of a circuit board was studied. Firstly, the phenomenon of shrinkage tensile stress in common potting materials was analyzed, and it was found that the commonly used potting adhesives displayed large shrinkage characteristics. Secondly, a small experiment was set up to verify that the shrinkage tensile stress of potting adhesives would lead to printed circuit board (PCB) deformation, and the shrinkage stress was contrary to the acceleration direction of overload. Thirdly, the influence of potting adhesives on the overload resistance of the PCB was analyzed.
Technical Library | 2019-03-06 21:26:14.0
Electronic assemblies use a large variety of polymer materials with different mechanical and thermal properties to provide protection in harsh usage environments. However, variability in the mechanical properties such as the coefficient of thermal expansion and elastic modulus effects the material selection process by introducing uncertainty to the long term impacts on the reliability of the electronics. Typically, the main reliability issue is solder joint fatigue which accounts for a large amount of failures in electronic components. Therefore, it is necessary to understand the effect of polymer encapsulations (coatings, pottings and underfills) on the solder joints when predicting reliability.This paper presents the construction and validation of a thermo-mechanical tensile fatigue specimen. The thermal cycling range was matched with potting expansion properties in order to vary the magnitude of tensile stress imposed on solder joints
Model WDD, WDW，WDW-S, WDW-E, WDW-D Series Computer Control Electromechanical Universal Testing Machine Applications Computer Control Electromechanical Testing Machines are designed and manufactured according to ASTM, ISO, DIN, GB etc standards. I
SMTnet Express, March 7, 2019, Subscribers: 31,716, Companies: 10,725, Users: 25,814 Effect of Encapsulation Materials on Tensile Stress during Thermo-Mechanical Cycling of Pb-Free Solder Joints Credits: DfR Solutions Electronic assemblies use a
SMTnet Express, August 12, 2021, Subscribers: 26,820, Companies: 11,423, Users: 26,800 Analysis of the Influence of Shrinkage Tensile Stress in Potting Material on the Anti-Overload Performance of the Circuit Board In this article
ORION Industries | http://orionindustries.com/pdfs/nomex410.pdf
. Electrical properties The typical electrical property values for NOMEX® Type 410 paper are shown in Table I. The AC Rapid Rise dielectric strength data of Table I, representing voltage stress levels, withstood 10 to 20 seconds at a frequency of 60 Hz
