Technical Library: control micro systems (Page 3 of 8)

Method for Automated Nondestructive Analysis of Flip Chip Underfill

Technical Library | 2008-11-06 02:17:59.0

For many years Acoustic Micro Imaging (AMI) techniques have been utilized to evaluate the quality of the underfill used to support the solder bump interconnections of Flip Chip type devices. AMI has been established as one of the few techniques that can provide reliability and quality control data, but little has been done to automate the evaluation process for Flip Chip underfill until now.

Sonoscan, Inc.

Guidelines for Manufacturing Equipment Reference Manuals

Technical Library | 1999-08-05 09:31:04.0

This document provides suggested standard contents for equipment reference manuals for semiconductor process equipment. It includes a generic and detailed outline for equipment manuals, with major sections on installing, operating, controlling, and integrating process equipment.

SEMATECH

Determination of Copper Foil Surface Roughness from Micro-section Photographs

Technical Library | 2013-04-25 11:42:01.0

Specification and control of surface roughness of copper conductors within printed circuit boards (PCBs) are increasingly desirable in multi-GHz designs as a part of signal-integrity failure analysis on high-speed PCBs. The development of a quality-assurance method to verify the use of foils with specified roughness grade during the PCB manufacturing process is also important... First published in the 2012 IPC APEX EXPO technical conference proceedings.

Cisco Systems, Inc.

The Application of Spherical Bend Testing to Predict Safe Working Manufacturing Process Strains

Technical Library | 2013-01-09 18:31:54.0

The increased temperatures associated with lead free processes have produced significant challenges for PWB laminates. Newly developed laminates have different curing processes, are commonly filled with ceramic particles or micro-clays and can have higher Tg values. These changes designed to reduce Z-axis expansion and improve the materials resistance to thermal excursions through primary attach and rework operations have also produced harder resin systems with reduced fracture toughness.

Celestica Corporation

MECHANICAL FAILURES IN PB-FREE PROCESSING: EVALUATING THE EFFECT OF PAD CRATER DEFECTS ON PROCESS STRAIN LIMITS FOR BGA DEVICES

Technical Library | 2022-10-11 20:15:14.0

The increased temperatures associated with Pb-free processes have produced significant challenges for PWB laminates. Newly developed laminates have different curing processes, are commonly filled with ceramic particles or micro-clays and can have higher Tg values. These changes which are aimed at improving the materials resistance to thermal excursions and maintaining electrical integrity through primary attach and rework operations have also had the effect of producing harder resin systems with lower fracture toughness.

Celestica Corporation

How to Control Speed of Servo Motor & Anti-Interference Measures

Technical Library | 2021-12-31 01:27:08.0

A servomotor refers to the actuator to control the operation of mechanical components in the servo system and is a subsidy motor indirect transmission device. The servo motor can control speed, whose position accuracy is high, and convert voltage signal into torque and speed to drive the controlled object. A servomotor speed is controlled by the input signal, responding quickly.

OKmarts Industrial Parts Mall

How to achieve optimum results in automated dispensing

Technical Library | 2020-02-13 08:41:18.0

Efficient bonding, sealing and potting has a major influence on the sustainable function and safety of electronic components. The key to success here lies in the comprehensive view and control of process engineering. Here it pays to seek collaboration with the systems and the material manufacturer during the very early stages of the project. This is because dispensing systems must be selected for compatibility with the workpiece and the adhesive, sealant or potting compound used. And there are also other factors that play an important role in designing the optimum dispensing system:

Scheugenpflug Inc.

Air Powered Dispensing

Technical Library | 2007-01-31 12:08:36.0

Air-powered dispensing systems use controlled pulses of air pressure to dispense solder paste from syringe reservoirs in uniform amounts. In this paper, EFD explains the most critical variables affecting air-powered dispensing of solder pastes and shows how to manage those variables to your advantage.

Nordson EFD

Effective Qualification of Soldering Iron Performance Criteria

Technical Library | 2012-11-27 14:06:48.0

Quality managers and line supervisors are routinely tasked with the responsibility of ensuring that the hand soldering process is under control. The method most commonly used is to measure the idle tip temperature of the soldering station and to use this reading as a benchmark of system compliance. This method, although popular is now being seriously questioned by many industry professionals as being irrelevant in qualifying true system process control. This document aims to present a practical view of what factors are important for successful hand soldering and to suggest an alternative procedure for qualification that is simple, repeatable and directly related to the effectiveness of the soldering station.

Metcal

How can you tell the differences between revisions of the same board?

Technical Library | 2016-11-08 16:47:18.0

Over time most PCB designs need to change – a mistake is found, or a part becomes obsolete, etc. Typically once the changes are complete, a new set of manufacturing files (Gerbers, NC Drill files, BOM, Pick and Place, etc) are generated, and the updated design is stored as separate version within a version control system. Using a version control system makes it possible for design teams to go back later and compare differences between design versions. ****** http://www.numericalinnovations.com/blogs/news/gerber-comparisons-between-revisions-of-the-same-board *****

Numerical Innovations


control micro systems searches for Companies, Equipment, Machines, Suppliers & Information

Whizz Systems
Whizz Systems

Electronic manufacturing services - electronic design, development and manufacturing. Circuit board design, prototyping, FPGA services, signal integrity and simulation, pcb assembly. Factories in California USA and Malaysia.

Manufacturer / Consultant / Service Provider

3240 Scott Blvd
Santa Clara, CA USA

Phone: +1 408 980 0400