Repair of Printed Circuit Boards Carrying Surface Mount Components

Circuit World ◽  
1988 ◽  
Vol 14 (2) ◽  
pp. 11-15 ◽  
Author(s):  
M.M.F. Verguld ◽  
M.H.W. Leenaerts
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Surface Mount ◽  
Printed Circuit

A Solution Methodology for the Multiple Batch Surface Mount PCB Placement Sequence Problem

1994 ◽  
Vol 116 (4) ◽  
pp. 282-289 ◽  
Author(s):  
Yu-Wen Huang ◽  
K. Srihari ◽  
Jim Adriance ◽  
George Westby
Keyword(s):  
Printed Circuit Boards ◽  
Solution Method ◽  
Identification Problem ◽  
Circuit Boards ◽  
Surface Mount ◽  
Printed Circuit ◽  
Knowledge Based ◽  
Sequence Identification ◽  
Placement Machine ◽  
Solution Methodology

The placement of surface mount components is a time consuming and critical task in the assembly of surface mount Printed Circuit Boards (PCBs). The focus of this research was the identification of “near optimal” solutions for the placement sequence identification problem. The factors considered include the placement machine and the specific PCB, the feeder space available, the need for tooling and nozzle changes, and the actual traveling path of the placement head. Expert (or knowledge based) systems were used as the solution method for this problem. The system developed can cope with single PCBs, panels, 180 deg offset boards (panels), and multiple PCB batches. The prototype knowledge based system developed in this research identifies solutions in (almost) realtime.

The Feasibility of Ultrasonically Bonding Surface Mount Components to Printed Circuit Boards

Circuit World ◽  
1989 ◽  
Vol 15 (3) ◽  
pp. 33-39 ◽  
Author(s):  
E. Goold
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Surface Mount ◽  
Printed Circuit ◽  
Bonding Surface

scholarly journals Good Artists Torrent, Great Artists Fork

Media-N ◽  
2019 ◽  
Vol 15 (2) ◽  
pp. 1-4
Author(s):  
Taylor Hokanson ◽  
Nick Bontrager
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Led Light ◽  
Surface Mount ◽  
Printed Circuit ◽  
Commercial Applications

In this workshop, Professors Nick Bontrager and Taylor Hokanson introduce the tools and services required to fabricate printed circuit boards, or PCBs. The process is more accessible than ever before, and is cheap enough to allow individuals to obtain functional prototypes, in small quantities, that are indistinguishable from similar PCBs that might be produced in the hundreds of thousands for industry or commercial applications. Using an “unpopulated” demonstration board designed by the workshop co-chairs, participants walk through all the steps needed to assemble and solder surface-mount components, finishing the event with a battery-operated, wearable, LED light display.

PCB Related Failures in Electronic Assemblies

2011 ◽  
Vol 341-342 ◽  
pp. 411-415
Author(s):  
Ping Liu ◽  
Xiao Long Gu ◽  
Xin Bing Zhao ◽  
Xiao Gang Liu
Keyword(s):  
Printed Circuit Boards ◽  
Surface Mount Technology ◽  
Circuit Boards ◽  
Surface Mount ◽  
Printed Circuit ◽  
Process Procedures ◽  
Manufacture Process ◽  
Black Pad ◽  
Conductive Anodic Filament ◽  
Electronic Assemblies

The complexity of Printed Circuit Boards (PCBs) has increased dramatically over the last three decades with the development of surface mount technology (SMT). The typical manufacture of rigid multilayer PCB contains many process procedures, which makes manufacture and application much more challenges. This paper focuses on some typical PCB related failures. Recommendations are provided on optimizing PCB manufacture process and material application. Microvia crack, black pad, galvanic attack, pad design, conductive anodic filament and pad crater are presented in detail.

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