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Description of ASTM-F459 2013ASTM F459 - 13Standard Test Methods for Measuring Pull Strength of Microelectronic Wire BondsActive Standard ASTM F459 | Developed by Subcommittee: F01.07 Book of Standards Volume: 10.04 ASTM F459Significance and Use 5.1 Failure of microelectronic devices is often due to failure of an interconnection bond. A common type of interconnection bond is a wire bond. These methods can assist in maintaining control of the process of making wire bonds. They can be used to distinguish between weak, nonadherent wire bonds and acceptably strong wire bonds. The methods are destructive. 5.2 These test methods are appropriate for on-line use for process control, for purchase specifications, and for research in support of improved yield or reliability. The referee method should be used for quantitative comparison of pull strengths of wire bonds. 1. Scope 1.1 These test methods cover tests to determine the pull strength of a series of wire bonds. Instructions are provided to modify the methods for use as a referee method. The methods can be used for wire bonds made with wire having a diameter of from 0.0007 to 0.003 in. (18 to 76 ?m).
Note 1 Common usage at the present time considers the term wire bond to include the entire interconnection: both
welds and the intervening wire span.
1.2 These test methods can be used only when the loop height of the wire bond is large enough to allow a suitable hook for pulling (see Fig. 1 ) to be placed under the wire.
FIG. 1 Suggested Configuration for a Pulling Hook
1.3 The precision of these methods has been evaluated for aluminum ultra-sonic wedge bonds; however, these methods can be used for gold and copper wedge or ball bonds. 2 1.4 These methods are destructive. They are appropriate for use in process development or, with a proper sampling plan, for process control or quality assurance. 1.5 A nondestructive procedure is described in Practice F458 . 1.6 The values in SI units are to be regarded as standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards F458 Practice for Nondestructive Pull Testing of Wire Bonds Keywords microelectronic wire bonds; pull strength; wire bonds; ICS Code ICS Number Code 29.120.20 (Connecting devices) DOI: 10.1520/F0459-13 ASTM International is a member of CrossRef. ASTM F459The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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