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Printed Circuit Board Production Engineering
Posted on 30/10/2015

Once the customer order and PCB design file is received the PCB Global production engineering team will process the manufacturing data which is required at every stage of PCB fabrication. This ensures that your Printed Circuit Boards are manufactured to your specifications. There are multiple combinations when it comes to PCB finishes and specifications. Listed below is an example of a typical 4-layer multi-layer data required on a job card to ensure that all customer manufacturing conformance is adhered to:

PART NUMBER– PCB GLOBAL 123456-A

LAYER – 4 layer

QUANTITY– 512pcs

PRODUCTION PANEL SIZE– 450 x 650 mm

PRODUCTION PANEL QUANTITY- 32

UNIT SIZE– 90 x 150 mm

PANEL SIZE– 300 x 200 mm

BOARDS PER PANEL– 4

MATERIAL– FR4 High TG=170 - S1170

PCB THICKNESS– 1.6mm

COPPER FOIL– 18um Copper

PRE-PREG– 7628HR RC: 47% 0.21mm

CORE – 1.0mm 35/35um Copper

SOLDER MASK COLOUR– Blue

COMPONENT LEGEND COLOUR–  Yellow

SURFACE FINISH– Immersion Gold – ENIG 2-3u”

PROFILING– Panel route with break tabs

This break-down ensures that the operators at each stage of fabrication will assume the precise finishes required on this part number as it flows through the production line. A typical workflow for a standard 4-layer through the PCB Global processes is demonstrated through many small processs.

Firstly the inner layer material is cut and the inner layer laminating and exposure is completed. Developing, etching and AOI inspection is the followed up by copper foil and pre-preg cut and multilayer lamination and pressing. Next the CNC drilling will take place in preparation for Desmear and Electrolysis Copper plating. Once this is complete, laminating and exposure is pattern plaited (Copper & Tin/Lead) and etched with a further AOI Inspection. LPI solder mask along with the component legend silkscreen is applied and then sent to bare board testing. Immersion gold is added with a further CNC routing. The boards are then clarified with deionised water before the final QA. The boards are then packed and dispatched to your requested delivery address.