GESP TECH -TRUSTWORTHY ONE-STOP PCB SERVICES PCB ASSEMBLY REWORD
Introduction
PCB assembly rework will always be a part of our life. It manifests itself as engineering change orders. product upgrades and revisions, general automated process errors, and so on. Rework is one of the most unexpected and variable phases of the PCB assembly process. In fact, no other function in the manufacturing process. that has a greater negative impact on profitability than rework.
BENEFITS OF PCB ASSEMBLY REWORK
In today, complicated packages, rework has taken on an entirely new significance. The requisite equipment, training, and engineering support are costing electronic assemblers millions. not to mention the resulting damage/waste. Besides, the “Time To Market” element is costly since it prevents a large number of circuit boards . from reaching end markets while they are undergoing rework. This is particularly true in the communications, computer. and telecommunications industries, where product life cycles are short. Successful businesses are coming to realize. that outsourcing a part of their rework duties can reduce the high cost of rework.
EXAMPLES OF REWORK SERVICES
- Plated Thru-Hole
- BGA Reballing
- SMT (QFP, PLCC, Chip Style, LCC, SOP)
- SMT Fine Pitch, Ultra Fine Pitch
- PBGA, CBGA, Micro BGA
- Flip Chip
- Pin Grid Arrays
- Connectors
PCB ASSEMBLY REWORK PROCESS
The technique for lead-based and lead-free PCB assemblies is similar. with the exception that lead-free PCB assemblies require higher temperatures and more precision. Before rework or component removal. need to to clean PCBs. The steps involved in PCB assembly rework are as follows:
Profiling temp:
This need to determine the actual component temperatures. and the soldering method required for a certain PCB assembly.
Damaged component removal:
Depending on the component, safe and specialized instruments. such as forked tips, wooden sticks, and tweezers used to remove damaged components. that need various heating techniques. As soon as possible, each component must be eliminated. Glued components require special attention. and it may be necessary to apply more heat to a tip until the glue is entirely removed. On both ends of the component, that applied liquid flux , and then the forked tip placed on top. As soon as the solder melted, the component falls away from the site and removed from the board.
Clean the board:
Both before and after soldering and component removal. the site must be thoroughly cleaned. Liquids, oils, and greases that on a surface must be completely removed. since they might lead to adhesion problems and contamination.
Soldering leaves flux residues, such as ionic impurities. that depending on their charge. affect the conductivity of the cleaning solution. This may lead to leakage and corrosion difficulties. So, removing these residues is essential.
A new soldered component is installed in its place:
Replacing a component is a necessary task. that is much more challenging than removing a component. This necessitates the use of highly trained professionals and modernized tools. When replacing surface mount pads or circuits, liquid epoxy is typically employed. But, it is not ideal for components with a fine pitch. Certain pads include adhesives and are thermally attached to the surface of the board.
Testing and inspection:
Once the PCB assembly fixed, it need to tested, operated. and inspected from all angles, including required functions. component quality, contamination or other flaws, etc.
WHY CHOOSE US FOR PCB ASSEMBLY REWORK
Our Rework Division provide skilled rework, repair, and ECO adjustments to your PCBs, as well as prototype tests. Our cutting-edge equipment and IPC-certified operators ensure that the work on your PCBs is done quickly, correctly, and consistently. 100% guaranteed. GESP promises that 100% of your boards will be returned to you without damage. We have saved our customers millions of dollars by assisting them with the rework process and offering rapid, dependable service. Because of our specialized methods in rework and repair, our operators’ output per person greatly exceeds that of in-house operators. When you compare your completely burdened overhead rate of rework to our per board price, you’ll be shocked.