solder mask plays a vital role in pcb board n.
Skip this Video
Loading SlideShow in 5 Seconds..
Solder Mask Plays a Vital Role in PCB Board Assembly PowerPoint Presentation
Download Presentation
Solder Mask Plays a Vital Role in PCB Board Assembly

Solder Mask Plays a Vital Role in PCB Board Assembly

35 Vues Download Presentation
Télécharger la présentation

Solder Mask Plays a Vital Role in PCB Board Assembly

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Solder Mask Plays a Vital Role in PCB Board Solder Mask Plays a Vital Role in PCB Board Assembly Assembly Electronic industry in today’s era an increased packing density on PCB board assembly surface and device miniaturization. The combination results in the exposure of electronic equipment to a variety of climatic conditions. As a result, there are many humidity-related severe reliability issues because of the comprehensive user environment. The chemical — solder mask, layers on a desolate printed circuit board assembly with openings for the areas solder will cover and masking the rest. To protect the board from an environment and prevent solder from accidentally bridging neighboring pads or tracks during assembly is the primary objective of the chemical solder mask. As the latter protects an assembled board, the solder mask is not a conformal coating in spite of begin protective coatings. During assembly, the solder mask dams placed by the designers between surface mount pads prevents accidental solder bridging by reducing the amount of rework for removing shorts. However,

  2. it is not necessary that all SMD pads should have solder mask dams between them, as the spacing amid the pads for such components is very small, especially the fine-pitch components. Preventing solder starvation is one of the uses of the solder mask, and likewise, there are other uses too. In general, the component lead should be bind to its copper pad by solder. But molten solder can flow down the track if the solder mask does not cover the rail attached to the copper pad starving it of adequate solder, which in turn creates an unreliable joint. The molten wick solder also severed in the presence of an uncovered via that is close to a pad, again starving the pad of adequate solder. Thus this wicking is prevented by covering via with solder mask. About Solder Mask Depending on the customers’ preference, fabricators use material based on other colors such as black, white, yellow, blue, red, and green, but the solder mask material the most common color is green. If we take a look at the processes of solder mask done in the past, then applications were made through pattern printing. However, the adequate definition is not offered by the screen-printing technique of solder mask application, with PCB board assembly technology increasingly progressing components. towards fine-pitch PCC specializes in rapid PCB assembly and system manufacturing services. Right from low and medium volume, high mix products, to diverse customer markets across the world, PCC provides the best PCB assembly services. Moreover, for varied sizes and substrates types (FR4, Rogers, copper, duroid, ceramic, metal core aluminum, CEM 1, and CEM 3), our CCA, circuit card assembly lines are versatile.

  3. Apart from this, we also expertise in each aspect of Printed Circuit Board Assembly services right from multi-layered to flexible PCBs. In volume or prototype, PCC supports simple small boards to multiple HDI boards. and manufacturing Moreover, to deliver quick turnkey PCB assemblies and consignments we provide in-house, an end to end support services, right from Design of Manufacturing (DFM), material sourcing, to testing. However, PCC does understand that no single PCB fabrication house can fulfill all the requirements of the customers, and so, to meet diversified needs of our clients we have partnered with various local and offshore PCB fabrication houses. What is more, PCC is committed to delivering Manufacturing Services (EMS) and solutions, liberating our customers from the complexities of mechatronics, enabling them to focus on driving their business forward. quality Electronic