Electronics Forum: engineering (Page 246 of 261)

PCB Supplier Evaluation And Qualification

Electronics Forum | Wed Feb 25 09:21:05 EST 1998 | Earl Moon

PCB Fabrication Supplier Evaluation And Qualification Made Easier Supplier evaluation and qualification often is left to uninformed industry references or vague suggestions made by sales unprofessionals. This discussion is met to enhance a customer'

Re: I am looking for training for SMT process.

Electronics Forum | Thu Feb 19 00:31:55 EST 1998 | Larry

The type of training I am looking for is things like micro BGA, flipchip, COB, new processes and techniques, ect. I already work with things like fine pitch QFP's, high mix double reflowed boards every day. I live in Vancouver, but I can drive to Sea

Re: STATISTICAL PROCESS CONTROL. 6-SIGMA

Electronics Forum | Wed Jan 14 14:36:29 EST 1998 | Mike Cox

Your questions would require volumes of information to answer completely. This is a readers digest version to help you get started volumes Don't rely on inspection as a process indicator of your quality and defect levels. Unfortunately Inspectio

Glue Dispense Process Control

Electronics Forum | Fri Aug 10 13:52:58 EDT 2001 | davef

When you say that glue viscosity changes for lot to lot, is this LOT TO LOT of your product OR Loctite�s product? And when you say that glue viscosity changes, what do you mean [eg, increase by � , decrease by � , er watt?]. What specifically is th

DPAK land pattern

Electronics Forum | Thu Mar 21 21:21:37 EST 2002 | davef

In the beginning, there was TO-5. And it was good. Flushed with success, they created TO-220. It too was good. Then came SMT. It was better than some things, but then again ... In these early days, there was a haze on the horizon that blocked t

BCC Technology --- Placement, Rework, Reflow

Electronics Forum | Thu Apr 04 05:33:19 EST 2002 | ianchan

Hi, hope this helps : 1) BCC (bump chip carrier) production for us, was with a 5mils Stencil. The outer perimeter smallish pads are not much of a problems. For the central large pad, we split the paste print (corresponds to the Stencil apperture op

adhesive on pads

Electronics Forum | Sat Mar 30 17:27:45 EST 2002 | davef

You should not have glue "all over the place." Tou should not have glue on solderable surfaces. It sounds like you are stringing glue from one dispense location to the next. Search the fine SMTnet Archives [there might be something there]. Read a

Universal instruments registration

Electronics Forum | Fri Apr 19 12:27:09 EDT 2002 | jeffreybrown

I have read with interest this string of opinions about support of old machines. I am the service manager of Contact Systems and I deal with customer support every day. Our policy is to treat all owners of Contact machines in an evenhanded way. The w

Document Control Center software recommendations

Electronics Forum | Wed Jul 31 17:36:32 EDT 2002 | davef

Basically you need to do two things 1 Look at and print drawings you get. 2 Keep track of where those drawing are stored. LOOKING AT AND PRINTING DRAWINGS YOU GET. Use: * Same software that your customer used to create the drawing. [Oh, lots of cu

BGA Rework

Electronics Forum | Thu Apr 10 09:28:14 EDT 2003 | chrissieneale

Thanks for your replies guys, there's some good info there. Dave, answers to your questions: The stencil was initially a big problem as with the Egineering Model's (EM's) and Engineering Qualifing model (EQM's) we kept getting short circuits due to


engineering 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

Equipment Auction - Eagle Comtronics: Low-Use Electronic Assembly & Machining Facility 2019 Europlacer iineo + Placement Machine  Test & Inspection: Agilent | Tektronix | Mantis Machine Shop: Haas VF3 | Haas SL-20 | Mult. Lathes

World's Best Reflow Oven Customizable for Unique Applications
Selective soldering solutions with Jade soldering machine

High Throughput Reflow Oven
Pillarhouse USA for Selective Soldering Needs

High Precision Fluid Dispensers


"回流焊炉"