Career Center | Philadelphia, New Jersey USA | Sales/Marketing
LOCATION BASE SALARY USA - NJ - Central USA - NJ - Southern USA - PA - Philadelphia $67000 - 73000 Another $50K to $70K in commissions based on plan COMPANY BRIEF My client is a leading supplier of automated broadband communications assembly e
Ball grid array placement and soldering The Etneo "easy re=place" is a system for the easy placement and soldering of any SMT components. The system has an exclusive and unique solution to easy and quickly determine the correct soldering profile
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Technical Library | 2020-09-23 21:37:25.0
The need to minimise thermal damage to components and laminates, to reduce warpage-induced defects to BGA packages, and to save energy, is driving the electronics industry towards lower process temperatures. For soldering processes the only way that temperatures can be substantially reduced is by using solders with lower melting points. Because of constraints of toxicity, cost and performance, the number of alloys that can be used for electronics assembly is limited and the best prospects appear to be those based around the eutectic in the Bi-Sn system, which has a melting point of about 139°C. Experience so far indicates that such Bi-Sn alloys do not have the mechanical properties and microstructural stability necessary to deliver the reliability required for the mounting of BGA packages. Options for improving mechanical properties with alloying additions that do not also push the process temperature back over 200°C are limited. An alternative approach that maintains a low process temperature is to form a hybrid joint with a conventional solder ball reflowed with a Bi-Sn alloy paste. During reflow there is mixing of the ball and paste alloys but it has been found that to achieve the best reliability a proportion of the ball alloy has to be retained in the joint, particular in the part of the joint that is subjected to maximum shear stress in service, which is usually the area near the component side. The challenge is then to find a reproducible method for controlling the fraction of the joint thickness that remains as the original solder ball alloy. Empirical evidence indicates that for a particular combination of ball and paste alloys and reflow temperature the extent to which the ball alloy is consumed by mixing with the paste alloy is dependent on the volume of paste deposited on the pad. If this promising method of achieving lower process temperatures is to be implemented in mass production without compromising reliability it would be necessary to have a method of ensuring the optimum proportion of ball alloy left in the joint after reflow can be consistently maintained. In this paper the author explains how the volume of low melting point alloy paste that delivers the optimum proportion of retained ball alloy for a particular reflow temperature can be determined by reference to the phase diagrams of the ball and paste alloys. The example presented is based on the equilibrium phase diagram of the binary Bi-Sn system but the method could be applied to any combination of ball and paste alloys for which at least a partial phase diagram is available or could be easily determined.
World's First Solder Joint Encapsulant Perfect solution for customers looking to eliminate underfilling processes. The SMT 256 Individual Solder Joint Encapsulation Adhesive is the world’s first combined flux gel/individual solder joint encapsulati
During use solder builds up in the cavity in cold bump pull (CBP) jaws. This reduces their grip efficiency and affects the quality of your measurements. Cleaning the cavities is very difficult and small ball cavities can be damaged easily. XYZTEC ha
Technical Library | 2012-10-04 18:52:43.0
First published in the 2012 IPC APEX EXPO technical conference proceedings... Due to the obsolescence of SnPb BGA components, electronics manufacturers that use SnPb solder paste either have to use lead-free BGAs and adjust the reflow process or re-ball t
Used SMT Equipment | Semiconductor & Solar
Bondtester by DAGE, in good condition. DAGE Series 4000 Bondtester product information. The 4000 bondtester is multipurpose, capable of performing all pull and shear applications. The 4000 bondtester can be configured as a simple bond wire pull
Industry News | 2017-02-05 09:21:06.0
Solder balls and solder beading have been a process issue for many years and they may not cause product failure or quality problems but they are not desirable. Solder balls are caused by a variety of factors in different processes and should be resolved to eliminate a poorly defined process or a process and materials which are out of control With over 40 years in industry and 30 solving process problems for industry Bob Willis explains the causes and curses for solder balls. Bob’s webinar features many unique process video clips on testing and failures and make his sessions come alive providing a much better understanding of the root cause of failure and corrective action. For further details go to http://www.bobwillis.co.uk/event/solder-ball-elimination-in-wave-selective-reflow/
Do you repair thick multilayer printed circuit boards that are connected to metal ground planes? Avionics modules that are designed to dissipate heat? Heat-sinking pcb's utilizing lead-free alloys that seem to require a blow-torch to solder effective
