Electronics Forum: qfp ground pad poor contact (18)

QFN Thermal pad voiding

Electronics Forum | Wed Jun 03 13:56:09 EDT 2009 | mika

less total area of voids, which mean a much more strength in the joint and much easier to solder such a cooling pad grounded via vias, with this approach! The same goes for big cooling pads of let say Power transistors without any via etc. Always re

Re: bare board problem

Electronics Forum | Thu Jun 17 19:40:11 EDT 1999 | Scott Cook

| first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pads. an

Industry News: qfp ground pad poor contact (5)

Stencil aperture considerations for QFN chips

Industry News | 2018-10-18 08:40:47.0

Stencil aperture considerations for QFN chips

Flason Electronic Co.,limited

How to Prevent Short Circuits to Ground in QFN Components?

Industry News | 2018-10-18 08:29:16.0

How to Prevent Short Circuits to Ground in QFN Components?

Flason Electronic Co.,limited

Express Newsletter: qfp ground pad poor contact (773)

Partner Websites: qfp ground pad poor contact (8)

Dispense-System-Service-Guide_22290008G.book

GPD Global | https://www.gpd-global.com/pdf/doc/Dispense-System-Service-Guide-22290008G.pdf

• Remove Needle/Nozzle Support section - relocated to separate document PN 22200609. • Add additional images of calibration station. 03/03/2015 2.8 New • Add specifications: Volts AC note, 2-pole 3 wire ground note, power cable wire gauge specs

GPD Global

Calendar of Events

Surface Mount Technology Association (SMTA) | https://www.smta.org/news/smta_calendar/calendar.cfm

# of PCB layers, larger internal connections, thicker Cu ground layers and poor Cu balance that in some cases cannot be fix by designers difficult current soldering processes narrowing process window

Surface Mount Technology Association (SMTA)


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