Industry News | 2012-05-04 09:21:15.0
As printed boards evolve and chip speeds increase, the use of microwave technology in commercial applications, such as cell phone towers and in military products, is expanding.
Industry News | 2013-02-27 15:04:56.0
February 2013 ― OK International will demonstrate the new Metcal MX-5200 Soldering, Desoldering and Rework Series in Booth E22 at the Enova Grand Ouest exhibition, scheduled to take place March 27-28, 2013 in Rennes, France.
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 | 2018-10-18 09:20:09.0
Product defects caused by the flux in the wave soldering process
Technical Library | 2021-09-29 13:35:21.0
In PCB circuit assemblies the trend is moving to more SMD components with finer pitch connections. The majority of the assemblies still have a small amount of through hole (THT) components. Some of them can't withstand high reflow temperatures, while others are there because of their mechanical robustness. In automotive applications these THT components are also present. Many products for cars, including steering units, radio and navigation, and air compressors also use THT technology to connect board-to-board, PCB's to metal shields or housings out of plastic or even aluminium. This is not a simple 2D plain soldering technology, as it requires handling, efficient thermal heating and handling of heavy (up to 10 kg) parts. Soldering technology becomes more 3D where connections have to be made on different levels. For this technology robots using solder wire fail because of the spattering of the flux in the wires and the long cycle time. In wave soldering using pallets the wave height is limited and pin in paste reflow is only a 2D application with space limitations. Selective soldering using dedicated plates with nozzles on the solder area is the preferred way to make these connections. All joints can be soldered in one dip resulting in short cycle times. Additional soldering on a small select nozzle can make the system even more flexible. The soldering can only be successful when there is enough thermal heat in the assembly before the solder touches the board. A forced convection preheat is a must for many applications to bring enough heat into the metal and board materials. The challenge in a dip soldering process is to get a sufficient hole fill without bridging and minimize the number of solder balls. A new cover was designed to improve the nitrogen environment. Reducing oxygen levels benefits the wetting, but increases the risk for solder balling. Previous investigations showed that solder balling can be minimized by selecting proper materials for solder resist and flux.
Technical Library | 2008-03-18 12:36:31.0
This paper examines the construction of a notebook mainboard with more than 2000 components and no wave soldering required. The board contains standard SMD, chipset BGAs, connectors, through hole components and odd forms placed using full automation and soldered after two reflow cycles under critical process parameters. However, state of the art technology does not help if the process parameters are not set carefully. Can all complex BGAs, THTs and even screws be soldered on a single stencil? What will help us overcome bridging, insufficient solder and thombstoning issues? This paper will demonstrate the placement of all odd shape components using pin-in-paste stencil design and full completion of the motherboard after two reflow cycles.
Industry News | 2018-10-18 11:28:37.0
Surface Mount (SMT) Assembly Cost in China
Industry News | 2018-10-18 10:23:07.0
Typical RoHS Issues in PCB Assembly
Industry News | 2020-07-14 16:04:39.0
Wednesday 8th July 2020 marked a significant milestone for Blakell Europlacer. 50 years to the day, the founding company, Blakell Systems Ltd, was registered and incorporated in Britain by Pat Kellard, who many seasoned industry professionals will remember.
