27 July 2016
We recently published How To: Wire Pull, a guide advising what to consider and how to best perform a Wire Pull test. The main focus of the manual is on wire- and ribbon pull using wire hooks. Loop height measurement is also covered. The how-to briefly touches on surrounding topics like tweezer pull and peel testing of wires, which will be the subject of a separate future how-to by XYZTEC.
Wire Pull Testing applies an upward force under the wire, effectively pulling it away from the substrate or die. The purpose of the test is as MIL-STD-883 2011.9 describes it: "To measure bond strengths, evaluate bond strength distributions, or determine compliance with specified bond strength requirements". A wire can be pulled to destruction, but there are also non-destructive variants whereby one tests whether the wire can withstand a certain force. Non-destructive test methods are typically used for 100% testing of safety critical, high quality and high cost products, avoiding damage to the acceptable wired bonds tested.
The term Wire Pull usually refers to the act of pulling a wire with a hook mounted on a pull sensor on a bond tester. However, to promote certain failure modes, wires can be cut and then pulled by tweezers, also mounted on a pull sensor on a bond tester. Wire Pull is sometimes abbreviated to WP. Our wire pull test type page contains videos of both thin wire pull testing and thick wire pull testing.
Usually wires up to 75µm diameter (3 mil) are classified as thin wire. Beyond that size, we speak about thick wire testing.
If you are interested in a live demonstration of the Condor Sigma on your sample or perhaps for more bond testing inspiration, contact us today! Also, did you know we have a consumables webshop, via which you can order tools at a 10% discount using promotion code SUMMER16? The promotion code is valid until the end of August.
|Apr 2019||Free SMTconnect ticket? Register now|
|Aug 2018||Is Fully Automatic Bond Testing Possible?|
|Jul 2017||Advances in Thin, 3D and MEMS Die Bond Strength Testing|
|May 2017||Shear testing copper pillar|
|Mar 2017||Fracture strength of thin wafers and die|
|Feb 2017||Centralized database for enhanced security and SPC options|
|Jan 2017||Full Automation with Improved Pattern Recognition, Fiducial Marks Analysis, Wire Detect and Failure Mode Analysis|
|Dec 2016||Coating and film testing|
|Nov 2016||Latest software release enables automatic grading|
|Oct 2016||Vision enhanced materials testing|
|Sep 2016||XYZTEC makes lid pull easy|
|Aug 2016||Condor Sigma W12 with large heater stage|
|Jul 2016||How to: Wire Pull|
|Jun 2016||Get 10% off your next tools order|
|May 2016||Pull testing bumped wafers|
|Apr 2016||SMD gull wing leads testing|
|Mar 2016||Automation: matrix bond testing made easy|
|Feb 2016||Fully integrated solution for automated wafer testing|
|Jan 2016||In bond testing, size does matter|
|Dec 2015||XYZTEC goes from strength to strength|
|Nov 2015||Automatic wire detect|
|Oct 2015||Highly reproducible stud pull tests are possible|
|Sep 2015||What is the quality of your coatings?|
|Aug 2015||Loading samples has never been so easy|
|Jul 2015||Axis accuracy of ±1µm: essential for automatic bond testing|
Aiming to improve understanding of bond testing in the industry, XYZTEC organizes seminars to present and disseminate knowledge in a straightforward format. Click here to find out more about bond testing seminars.