News
Carlsbad, CA -- Asymtek (www.asymtek.com) has developed a method for applying solder ball reinforcement material to semiconductor packages that can eliminate the need for dispensing secondary underfill in PCB assembly.
The company's DispenseJet DJ-9000 shoots a fluid stream of underfill adhesive as small as 100 micrometers wide between balls on CSPs and other BGA packages during the semiconductor packaging process. Other methods of pre-applied underfill have resulted in contaminating the solder balls or have been too costly to ramp into production.
Jetting the underfill prior to board assembly without contaminating the solder balls allows semiconductor packaging companies to offer packages with improved reliability without the cost of traditional underfilling.
Typically, CSPs or other BGA packages require adhesive underfill to glue the component rigidly to the PCBA to prevent failures due to shock. If the primary failure of a non-underfilled CSP or other BGA package occurs at the ball-package interface, the pre-applied solder ball reinforcement reduces the probability of joint failure at that interface.
The cured reinforcement material relieves the stress at the ball-substrate interface by reducing the geometric stress concentration factor at that point. Therefore, the solder joint withstands more load during shock-loading or thermal cycling.
Copyright 2004, UP Media Group. All rights reserved.
MfgQuote (www.mfgquote.com) is an online sourcing solution for custom manufactured parts and engineered components. Buyers, engineers and purchasing professionals submit and distribute request for quotes (RFQs) through the secure online system.
Suppliers have the opportunity to match their expertise, equipment and capacity to the buyers who need their services. The site gives them the tools to identify and build relationships with the right customers for their business with complete confidentiality.
The service is free to buyers (engineers, inventors and students), with suppliers and original equipment manufacturers (OEMs) paying a subscription fee for the opportunity to sell to the buyers.
Copyright 2004, UP Media Group. All rights reserved.
Cognex Corp (www.cognex.com) is hosting a seminar, Understanding and Applying Machine Vision Sensors, throughout North America this fall. Attendees will find out how machine vision sensors work, learn how applications can be set up quickly and easily, see live vision sensor demonstrations and learn how to reduce production costs.
All seminar participants will receive VisionGuide, which includes free In-Sight Explorer trial software.
The scheduled dates are:
ALABAMA
Huntsville, AL - Nov 17
Auburn, AL - Dec 1
ARIZONA
Phoenix, AZ - Oct 26
Tucson, AZ -Oct 28
ARKANSAS
Fayetteville, AR - Oct 28
CALIFORNIA
Emeryville, CA - Aug 5
San Diego, CA - Aug 10
San Jose, CA - Aug 18
Los Angeles, CA - Aug 19
Petaluma, CA - Sept 22
Fresno, CA - Oct 7
Santa Ana, CA - Nov 3
COLORADO
Denver, CO - Sept 28
CONNECTICUT
Hartford, CT - Nov 11
FLORIDA
Tampa, FL - Sept 21
GEORGIA
Augusta, GA - Sept 23
College Park, GA - Oct 12
IDAHO
Boise, ID - Sept 16
ILLINOIS
Burr Ridge, IL - Aug 18
Mount Vernon, IL - Aug 25
Tinley Park, IL - Sept 2
Deerfield, IL - Sept 21
Glendale Heights, IL - Oct 26
Peoria, IL - Nov 4
Elgin, IL - Nov 16
INDIANA
Evansville, IN - Nov 30
Indianapolis, IN - Dec 1
IOWA
Des Moines, IA - Aug 17
Cedar Rapids, IA - Aug 31
KANSAS
Topeka, KS - Sept 7
Wichita, KS - Oct 13
KENTUCKY
Louisville, KY - Oct 14
Bowling Green, KY - Dec 16
MARYLAND
Hunt Valley, MD - Sept 29
MASSACHUSETTS
Woburn, MA - Sept 15
Natick, MA - Nov 3
MICHIGAN
Adrian, MI - Aug 4
Dearborn, MI - Aug 5
Sterling Heights, MI - Aug 12
Saginaw, MI - Aug 24
Grand Rapids, MI - Sept 7
Cadillac, MI - Sept 15
Ypsilanti, MI - Sept 16
Battle Creek, MI - Oct 6
Pontiac, MI - Oct 12
Livonia, MI - Nov 18
MINNESOTA
Minneapolis, MN - Sept 9
Rochester, MN - Nov 2
NEBRASKA
Lincoln, NE - Oct 5
NEW HAMPSHIRE
Lebanon, NH - Sept 22
NEW JERSEY
Mahwah, NJ - Oct 13
Somerset, NJ - Oct 20
Mt. Laurel, NJ - Nov 10
Parsippany, NJ - Nov 30
NEW YORK
Albany, NY - Oct 27
NORTH CAROLINA
Winston-Salem, NC - Sept 16
Charlotte, NC - Oct 7
OHIO
Defiance, OH - Aug 3
Mansfield, OH - Aug 26
Toledo, OH - Oct 14
Dayton, OH - Oct 19
Akron, OH - Oct 21
Cincinnati, OH - Nov 4
Independence, OH - Nov 16
OREGON
Portland, OR - Aug 26
PENNSYLVANIA
Mars, PA - Aug 17
State College, PA - Aug 18
King of Prussia, PA - Sept 1
Canonsburg, PA - Sept 28
RHODE ISLAND
Providence, RI - Sept 8
SOUTH CAROLINA
Greenville, SC - Nov 2
SOUTH DAKOTA
Sioux Falls, SD - Aug 3
TENNESSEE
Nashville, TN - Sept 2
Jackson, TN - Sept 14
Cleveland, TN - Sept 30
Oak Ridge, TN - Nov 10
Clarksville, TN - Dec 2
TEXAS
Austin, TX - Aug 12
Dallas, TX - Oct 19
UTAH
Salt Lake City, UT - Sept 30
VIRGINIA
Fredericksburg, VA - Oct 21
Williamsburg, VA - Nov 17
Harrisonburg, VA - Dec 14
WASHINGTON
Spokane, WA - Sept 14
WISCONSIN
Menomonee Falls, WI - Aug 25
Wausau, WI - Sept 1
Racine, WI - Sept 23
Eau Claire, WI - Oct 5
Green Bay, WI - Nov 18
CANADA
Vancouver - Canada - Aug 24
Oshawa - Canada - Aug 31
Kingston - Canada - Sept 29
Mississauga - Canada - Oct 6
Cambridge - Canada - Oct 27
London - Canada - Nov 9
Chatham - Canada - Nov 23
Windsor - Canada - Dec 15
MEXICO
Juarez - Mexico - Dec 14
Reynosa - Mexico - Dec 16
PUERTO RICO
San Juan - Puerto Rico - Nov 9
Arecibo - Puerto Rico - Nov 11
To register, visit:
http://www.imakenews.com/eletra/go.cfm?z=cognex%2C18305%2Cb19Stk4q%2C20643%2Cb3kghhW
Copyright 2004, UP Media Group. All rights reserved.
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