Industry Directory | Consultant / Service Provider / Manufacturer
A Contract Manufacturing company specializing in Printed Circuit Board Assembly, Quick Turn Prototype Services, and Direct Fulfillment.
New Equipment | Rework & Repair Services
On the cutting edge of technology, we offer a full line of high tech services to assist contract manufacturer's and product research and developers. Specializing in quick turn around times to help get your product to market on time. Training Serv
Customer demand for highly sophisticated and ever smaller devices has made semiconductor packaging a vital contributor to system performance. As integrated circuits have become faster and more complex, the cost and performance of the interconnect bet
Electronics Forum | Fri Jun 17 23:31:12 EDT 2005 | kenscj
Hi all, currently, we are seeing BGA problem like solder ball misalign, void, solder short (all under BGA, tested with 5DX), after reflow. We examine the solder ball (raw material of BGA), and see that the ball surface is not smooth, will that affe
Electronics Forum | Tue Jun 21 11:46:04 EDT 2005 | kenscj
Hi dave, Thanks for the comment. I have another issue. The board already pass Test and Burn-In processes, but after 2 months the BGA contact is found open (no contact on certain balls). How can that happen? Is it during build, the solder ball alrea
Industry News | 2013-01-02 16:01:34.0
A Convenienient and informative online tutorial about Design and Assembly Process Challenges for Bottom Terminations Components
Industry News | 2019-11-05 22:19:03.0
> News-Blog > Guideline for wire bonding Guideline for wire bonding Tuesday,Jun 12,2018 There are two wire bonding processes that are used, Thermosonic (T/S) Gold Ball Wire Bonding and Ultrasonic (U/S) Aluminum Wedge Wire Bonding. Approximately 90% of all IC Assembly in Semiconductor Packages is manufactured using Gold Ball Bonding process, while Aluminum Wedge Bonding is used to produce about 10% of other Wire Bonding requirements on Printed Circuit Boards (PCB), Printed Circuit Flex (PCF) and other Packages.
Parts & Supplies | Other Equipment
We support Samsung Smt Machine spare parts for CP30,CP33,CP45,CP45NEO,CP60,CP55,CP10,CP11, SM321,SM320,SM411,SM421,SM431,SM471 etc machines nozzle, Feeder, CPU Board, IO Board, Laser, Cable, Feeder cart, Motor, Driver ect thanks CP30
1.jpg)
Parts & Supplies | SMT Equipment
contact person:banny chen mail:zksale@hysmt.cn skype:miayuan8 best quality & lower price more than we can offer: 40001570 CPCI BOARD ASM 40001589 LIGHT CTRL BOARD PANEL 40001590 BASE FEEDER POWER BOARD PANEL ASM 40001591 SAFETY POWER BOA
Technical Library | 2021-12-16 01:45:05.0
In the 1990's, both BGA (Ball Grid Array) and CSP (Chip Size Package) are entering their end in the front-end packaging materials and process technology. Both BGA and CSP like SMD (Surface Mount Device) from the I 980's and THD (Through-Hole mount Device) from the 1970's are reaching its own impasse in terms of maximizing its electrical, mechanical, and thermal performances, size, weight, and reliability.
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.
This video describes the BEST BGA rework and BGA rework services capabilities. What is described in this movie are the people, processes and tools unique to BEST and how that impacts its customers. The advanced equipment set including multiple refl
Dinghua Technology-- the leading manufacturer of BGA rework station, Automatic screw locking machine, Automatic soldering station and non-standard equipment. For more details, please just contact John, WhatsApp/Wechat:+86 1576811 4827 , Skype: si
Training Courses | | | PCB Design Courses
The PCB design courses teach students the process, techniques and tools needed to design layout of printed circuit boards.
SMTnet Express, May 9, 2019, Subscribers: 31,902, Companies: 10,760, Users: 26,083 Cold Ball Pull Test Efficiency for the PCB Pad Cratering Validation with the Ultra Low Loss Dielectric Material Credits: iNEMI (International Electronics
Precision PCB Services, Inc | https://precision-pcb-services-inc.com/products/quick-turn-bga-rework-service
. Price listed is good for components with a maximum of 400 solder balls. Larger and more complex components may cost more. Price varies depending on chip size and quantity
| https://www.eptac.com/soldertips/soldertip-46-open-connections-found-on-bga-components/
: Open Connections Found on BGA Components Question : We have been stumped by occasional opens at the corner balls of some BGA components after reflow
.gif)
.png)
