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Required Materials. Safety Glasses, Lab Coat and Nitrile Gloves. MG Chemicals Positive Presensitized Copper Clad. Printed Circuit Board (PCB). PCB Fabrication Chemicals
From PCs to CellPhones — From Cars to Planes. there is barely an aPPliCation in our daily liFe that doesn't involve a Printed CirCuit board. With 30 years oF exPerienCe in develoPing high-teCh. equiPment For ProduCing high-eFFiCienCy PCbs, We have earned an outstanding rePutation as a. Provider oF Wet ChemiCal
When creating a circuit for PCB production, a designer would also select specific components at this time. Commonly, the next step is to prototype and to test the circuit. It is also possible to use the schematic capture software along with related software to simulate the circuit without building it on a prototyping board.
Multilayer represent the most complex type of PCB. Their cost is very high owing to the complexity of the manufacturing process, the lower production yields and the difficulty in reworking most of the rejects. They find applications in professional electronics (computers, military equipment etc.) where the density of connections
G/F Plating. HASL. Packing. Shipping. M/L's I/L manufacture. HASL. Final Finish according to customer requirement. Drilling. Copper. Plating. Outer. Layer. Solder Mask. Silk Screen. E-Test. & FQC. OQC. Entek OSP. Immersion Ag. OQC. E-Test. & FQC. Routing. I/L Cutting. PCB Processes Flow Chart. 4. Routing. G/F Plating.
Plated Vias. •Layout file: Gerber RS-274x, 2.4. •Hole file dxf, 2.4, single layer. •Holes are filled on the layout file. •Three alignment holes of 66/120 mils dia with donuts outside of layout. •Aspect ratio for plated hole max 2:1. •Clearance of 10 mils. •Max PCB size 6" X 6". •Laser cutting area is limited to 3.75. X 3.75
What is a multilayer PCB? Introduction to multilayer PCB?s. • The green thing with holes in it. • The first item needed when building any electronic product, but often ordered last. • A platform for components. • Circuitry with pre-defined electrical function. • Three or more conductive layers of copper which have been bonded to
PCB (Printed Circuit Board), NYAK. PWB (Printed Wiring Board), NYHL. Wire network + mechanical support + base of assembly. Benefits: • Higher load, better dissipation, better surface/cross section ratio. • Automatic assembly, control, and rework. • Better reliability. 2
File Formats. • Professional manufacture of PCBs is typically done through the use of CAD- independent files: – Gerber Files – describe the copper foil layout. – Drill Files (often in the Excellon format) – describe the location and size of holes. • Both are meant for direct use with automated PCB production equipment.
This presentation is a work in progress. As methods and processes change it will be updated accordingly. It is intended only as an introduction to the production processes used in building a circuit board and as a training aid for employees, customers and friends of Advanced. Circuits. Many of the process descriptions used.
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