SMT, PCB Electronic Industry News

Express Newsletter

The SMTnet Express newsletter is sent weekly to over 25,000 subscribers.


  • SMTnet
  • »
  • Express Newsletter

The Morphology Evolution and Voiding of Solder Joints on QFN Central Pads with a Ni/Au Finish

SMTnet Express October 19, 2012, Subscribers: 25598, Members: Companies: 9011, Users: 33828

Technical Library

The Morphology Evolution and Voiding of Solder Joints on QFN Central Pads with a Ni/Au Finish

First published in the 2012 IPC APEX EXPO technical conference proceedings.

by: Julie Silk, Jianbiao Pan, Mike Powers; Agilent

In this paper, we report on a comprehensive study regarding the morphology evolution and voiding of SnAgCu solder joints on the central pad of two different packages - QFN and an Agilent package called TOPS - on PCBs with a Ni/Au surface finish. Samples were isothermally aged at the equivalent of 0, 2, 7 and 14 years service life. Representative solder joints were cross-sectioned and analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) in order to investigate the evolution of the solder joint morphology as a function of Au content and isothermal aging. IMC thickness was measured...

read article »

Forum search results for related keywords: voiding, Ni/Au, QFN

SMT / PCB Products

HYDRON® WS 325
Cleaning and Defluxing Agent
HYDRON WS 325 Cleaning and Defluxing Agent

Developed for cleaning water soluble flux residues...

Offered by: ZESTRON

EXPERT 10.6
Automated Rework System
EXPERT 10.6 Automated Rework System

Ideal choice for complex printed circuit boards...

Offered by: MARTIN

Valor® MSS Asset Utilization Software for PCB Assembly
Valor MSS Asset Utilization Software for PCB Assembly

Isolate and improve problem areas in PCB manufacturing lines...

by: Mentor Graphics

SP210avi 23" Inline Stencil Printer
SP210avi Inline Stencil Printer

Retains reputation as the smallest printer in the market

Offered by: Speedprint

XPii-II
Pick & Place System
XPii -II Pick & Place

Modular compact footprint, huge component range...

Offered by: Europlacer

CELLS - MES & Tracking
Software
Unisoft CELLS MES & Tracking Software

Total traceability in manufacturing floor operations...          Download Trial

Offered by: Unisoft Get Your Power Membership

SMT / PCB Equipment Auctions

X-Line Electronic Equipment Auctions

X-Line Asset Management

Celestica - November 6-8

Late Model SMT and Electronic Test & Measurement Pieces...

Electronic Equipment Mart

Vi Technology Vi-3K
AOI
Vi Technology Vi-3K AOI

CE Exchange

all marketplace listings

Camalot 5000
Adhesive Dispenser
Camalot 5000 Adhesive Dispenser

PPM

all marketplace listings

Speedline Accela
Screen Printer
Speedline Accela Screen Printer

Cardinal Circuit

all marketplace listings

Cencorp TR2100
Router
Cencorp TR2100 Router

JMW Enterprises

all marketplace listings

Events Calendar

SMTA Connecticut Expo and Tech Forum
Oct. 24, Waterbury, CT, USA

Low Standoff Cleaning - Free Webinar
Oct. 25, Online

electronica 2012...
Nov. 13-16, Muenchen, Germany

Career Center

Jobs:

Production Engineer

Neptune, NJ, USA | EdmondMarks Technologies

Applications and Support Engineer - AOI

Richardson, TX, USA | Vi TECHNOLOGY

SMT Programmer/Operator

North Attleboro, MA, USA | Star Engineering

Resumes:

SMT Process Specialist

Fort Worth, TX, USA

Electronic Process Engineer

Brampton, Orlando, Canada

SMT Technician

Imus Cavite, Philippines

Industry Associations Events

SMTA

SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies. Membership Info | SMTA Certification | Bookstore

Next Event: Webinar - Design For Environment (DfE) - November 1


IPC

IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly. Membership Info | Training & Certification Programs | Standards & Publications - Online Store

Next Event: IPC HDI Conference: Advancements in Materials, Processes and Applications - October 24-25


Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

SMTnet.com, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

Unsubscribe. | Contact customer service

Capital Equipment Exchange - Used PCB Assembly Equipment

Mirtec Inspection Systems

The Mark III Reflow System

Quality Pre-owned PCBA Equipment

Aqueous Technologies Zero-Ion g3

Mentor Asset Utilization Solution

PPM - Pre-Owned Quad, MPM Equipment

SP700avi Inline Stencil Printer

Unisoft Software for SMT Placement

Zestron - cleaning products for the SMT industry

SMTnet - Electronic Industry Hub

News Forums SMT Equipment Company Directory

Calendar Career Center Advertising About FREE Company Listing!

  • SMTnet
  • »
  • Express Newsletter
Benchtop Fluid Dispenser
MSD Dry Cabinets
IPC Training & Certification - Blackfox

ICT Total SMT line Provider