sales@ipcb.com
In PCBA processing through rate has been an important parameter. Straight through rate is the product from the first process to the end of the last process, the main quota of production quality, work quality, testing quality. Straight through rate and the company's technological capabilities is a positive correlation between the ratio, if a PCBA processing plant's straight through rate is very high, but also indirectly proves the company's quality and technological strength. This is also the reason why we have been stressing internally to pay attention to the straight through rate.
PCBA Processing
PCBA through rate
In fact, PCBA pass-through rate is more important for a company's profitability and customer satisfaction of direct攷. Today, Audemars Piguet will combine the relevant processes in PCBA processing to share about PCBA pass-through rate.
For example,when PCBA is soldered or reworked, there are two important change processes, one or two collapses and deformation. Knowing and understanding these two processes is crucial to the success of soldering or rework of PCBA.
PCBA rework of the heating belongs to the local heating, different from the general use of reflow soldering furnace for a welding.
(1) The melting process of the solder joint: two collapses.
(2) The deformation process of the package: the first part of the heart of the bow and then the edge of the warpage.
PCBA rework workstation heating and cooling, and reflow soldering furnace is somewhat different.
(1) Rework equipment, due to heating the use of hot air for the jet wind, different parts of the flow rate is different, the wind temperature is also different, the general heart of the temperature is lower (available paper test), and cooling is just the opposite, which is the opposite of the requirements of the welding process.
(2) rework heating or cooling, are local heating, unlike reflow soldering heating is a balanced heating, whether it is PCB or components, deformation than the reflow soldering furnace to be larger.
The above differences make the PCBA rework often appear edge or heart bridge phenomenon.
PCBA welding is already a very difficult thing, but also to go through the rework, then invisible new PCBA production process, but also added the possibility of abnormal quality.
In addition, once there is a quality problem in the PCBA processing, delivery and customer satisfaction will be greatly reduced in the future development of the company to produce very serious consequences.