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IEEE Transactions on Components, Hybrids, and Manufacturing Technology

Issue 1 • March 1980

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Displaying Results 1 - 25 of 35
  • Editor's comments

    Publication Year: 1980, Page(s): 1
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    Freely Available from IEEE
  • Foreword - Special Section On Contacts

    Publication Year: 1980, Page(s): 2
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    Freely Available from IEEE
  • Foreword - Special Section on Packaging

    Publication Year: 1980, Page(s): 3
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    Freely Available from IEEE
  • Degradation of Thermocompression Bonds to Ti-Cu-Au and Ti-Cu Thin Films by Thermal Aging

    Publication Year: 1980, Page(s):134 - 143
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1745 KB)

    Ti-Cu-Au and Ti-Cu thin films are among several conductor metallizations which have been investigated as possible lower cost replacements for type B (0.005Omega/Box$^b$) Ti-Pd-Au in film integrated circuits. The results of a study of the degradation of thermocompression bonds to Ti-Cu-Au and Ti--Cu and the failure mechanism produced by thermal aging are presented. Ti-Cu-Au wa... View full abstract»

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  • Influence of the Substrate on the Electrical Properties of Thick-Film Resistors

    Publication Year: 1980, Page(s):181 - 186
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The thick-film technology is widely used for hybrid circuit manufacturing and there is a definite trend to use it in other applications. However, the understanding of the electrical, mechanical, and chemical characteristics of thick-film materials has been approached essentially on an empirical basis, even if many hypotheses have been formulated on their conduction mechanisms. In fact, thick-film ... View full abstract»

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  • Effects of Heat Treatment Variations on Surface Conditions of Iron-Nickel Alloys and the influence on Mercury Switch Behavior

    Publication Year: 1980, Page(s):172 - 180
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1552 KB)

    Various iron-nickel alloys are widely used in telecommunication applications, particularly in switching apparatus. They find application where soft magnetic properties, moderate mechanical strength, and good glass-sealing characteristics are required. Heat treatments are normally employed for decarburizing and/or developing required magnetic properties. Heat treatment in moist hydrogen atmspheres ... View full abstract»

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  • Some Fundamental Properties of Aluminum-Aluminum Electrical Contacts

    Publication Year: 1980, Page(s):71 - 79
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1448 KB)

    The results of a fundamental Investigation of the properties of stationary aluminum-aluminum (AA1350) electrical contacts at room temperature both in an ultrahigh vacuum and in an oxygen atmosphere are reported. The contact couples consist of two polished spherical surfaces held together under constant load over a small area; the work was carried out in an environmental chamber which allows manipu... View full abstract»

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  • Influence of Some Geometric Factors on Contact Resistance Probe Measurements

    Publication Year: 1980, Page(s):159 - 165
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    The effect of variations in the geometry and preparation of gold probe tips for contact resistance measurements has been evaluated. Tips prepared by melting and by machining and possessing shapes ranging from a point to hemispheres with radii from 0.9 mm to 3.2 mm were used. The contact resistance values are nearly independent of probe geometry on gold and on very lightly filmed (<5 to 10 Å... View full abstract»

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  • High-Current Brushes, Part V: Subdivided Monolithic Brushes at Very High-Current Levels

    Publication Year: 1980, Page(s):56 - 62
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1048 KB)

    Considerable interest has been shown during the last decade in the development of high-power electrical machines of the homopolar variety. Inherent in such machines is the transfer of very large currents between the rotor and stator at high speeds. In order to successfully transfer the high currents (current densities of up to 7.75 MA/m2at speeds of 50 m/s) with desired Iow losses and h... View full abstract»

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  • High-Current Brushes, Part IV: Machine Environment Tests

    Publication Year: 1980, Page(s):31 - 36
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    Brush performance has been investigated with a view to establish whether or not continuous very high-current density operation is feasible for many parallel brushes running under machine environment conditions. The ultimate objective is the development of sliding-brush contact systems for advanced powerful electrical machines that require large currents in order to achieve high efficiencies and sm... View full abstract»

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  • Design of Prototype Digital Processors Employing Subnanosecond Emitter Coupled Logic and Rapid Fabrication Techniques

    Publication Year: 1980, Page(s):125 - 134
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1744 KB)

    The development during the past decade of specialized and arithmetically demanding signal processing algorithms, exemplified by advanced digital radar processing and X-ray computed tomography requirements, has created a need for special purpose digital computers of ever increasing computational capacity. Although processor throughput can be enhanced by exploitation of computational parallelism, an... View full abstract»

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  • Circuit-Board Packaging Considerations for Optimum Utilization of Chip Carriers

    Publication Year: 1980, Page(s):105 - 110
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1152 KB)

    Effective utilization of large-scale integration (LSI) silicon technology requires efficient packaging of thc non-LSI portions of the circuit. Low density hybrids of four to six chips can be packaged in the same chip carriers as the LSI chips. This not only offers minimal initial costs, but the best chance for subsequent cast reduction as silicon technology permits conversion of the hybrids to chi... View full abstract»

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  • Ultrasonic In-Line Inspection Technique for Contact Materials

    Publication Year: 1980, Page(s):79 - 82
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The quality of the bond between the contact material and the base metal carrier is becoming increasingly important as the contact size is reduced to conserve silver. Many contact materials are produced by continuous brazing techniques. With conventional methods the quality of the continuous brazed joint cannot be evaluated in sufficient detail by in-line ultrasonic scanning. A new approach is desc... View full abstract»

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  • Experimental Investigation of Relay Contact Dynamics

    Publication Year: 1980, Page(s):150 - 158
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1480 KB)

    A review of methods of experimental research on the dynamics of electrical contacts is presented, and the imperfections of these methods are described. A method of measuring contact motion is developed, and experimental data of the contact operation without load and under load are obtained. The influence of the parameters of the mechanical system on these contact dynamics (values and number of vib... View full abstract»

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  • Welding Characteristics of Ag-W Contacts Under High-Current Conditions

    Publication Year: 1980, Page(s):50 - 55
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    The welding characteristics of Ag-W (65 weight percent W) have been evaluated In a weld-test apparatus at 1000 A, 2000 A, and 3000 A. Two experiments are discussed: a) comparison of the welding characteristics of two different samples of Ag-W contacts and b) changes In the surface structure of the Ag-W contacts and the effect of these changes on the contacts' welding characteristics. It is shown t... View full abstract»

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  • Study of the Reactivity of Silver,Copper,Silver-Copper, and Silver-Palladium Alloys used in Telephone Relay Contacts

    Publication Year: 1980, Page(s):13 - 16
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    A study is presented of the contamination of pure silver and copper as well as silver-copper and silver-palladium alloys which are used in telephone relay contacts. The contamination tests have been conducted in mixtures of synthetic air + H2O + H2S, with various H2O and H2S concentrations. The amount of resulting contamination on the samples has been de... View full abstract»

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  • Automatic LSI Wafer Dry-Point Detection and Control System

    Publication Year: 1980, Page(s):196 - 198
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    An automatic means is presented for determining when a semiconductor wafer is sufficiently dry (on the product surface) to allow removal from the present processing station for transportation to the next processing point. View full abstract»

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  • Elemental Surface Composition of Slip Ring Copper as a Function of Temperature

    Publication Year: 1980, Page(s):9 - 12
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The surfaces of four copper samples--oxygen-free high-conductivity (OFHC) (99.98 percent) Cu, 99.99 percent Cu, 99.9999 percent Cu, and a dilute Ag/Cu alloy (0.086 weight percent (wt %) Ag in OFHC Cu)--were examined in an ultrahigh vacuum system by Auger electron spectroscopy as a function of temperature between 25 and 600°C. It was found that the elemental surface composition of each sample ... View full abstract»

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  • Behavior of Line Contacts Upon the Effect of Fault Currents

    Publication Year: 1980, Page(s):191 - 195
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    The effect of the passage of high-fault currents (5 kA to 50 kA) through closed contacts has been measured. The contact surfaces were designed so that a region of line contact was established. After the passage of the high current, the contact resistance and the contact weld force were measured. A model of the line contact resistance was established which took into account the heating effects of t... View full abstract»

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  • Chip Carrier Packaging Applications

    Publication Year: 1980, Page(s):120 - 125
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    The increasing number of pins required by large-scale integrated (LSI) devices has brought a corresponding increase in the size of dual in-line and flatpack packages using standard 0.1 in printed circuit board interconnects. The chip carrier approach, as originally applied on ceramic beards in place of hybrids and currently being introduced for epoxy/glass boards, offers significant packaging impr... View full abstract»

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  • High-Current Density Carbon Fiber Brush Experiments in Humidified Air and Helium

    Publication Year: 1980, Page(s):26 - 30
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    Metallized carbon fiber brushes capable of operating at up to 4.65 MA/m2(3000 A/in2) in an air environment have been developed, fabricated, and tested. Experiments in humidified air and helium gas atmospheres containing 50 to approximately 5000 ppm of water vapor have been undertaken. The results show that the total brush losses (electrical plus mechanical) are not substantia... View full abstract»

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  • High-Current Brush Material Development, Part I: Sintered Metal-Coated Graphite

    Publication Year: 1980, Page(s):4 - 8
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    The technique for coating powders with copper or silver by chemical plating and the preparation of the sintered metal-coated graphite composites are described. A process has been developed for coating graphite powders of sizes down to 38 mum. Metal contents ranging from 20 to 97 percent, by weight of the final product, have been achieved by simple and multiple platings. Metallographs of the sinter... View full abstract»

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  • High-Current Brushes Part VI: Evaluation of Slip Ring Surface Films

    Publication Year: 1980, Page(s):83 - 88
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The thin film that is formed on the surface of an oxygen-free high-conductivity (OFHC) Copper slip ring sliding against monolithic silver-graphite brushes in a humidified carbon dioxide atmosphere has been investigatéd experimentally. The object was to study the nature and method of formation of the film since the films play a major role in the electrical, frictional, and wear performance of ... View full abstract»

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  • Analysis of Connector Springs with Complex Geometry

    Publication Year: 1980, Page(s):42 - 49
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    Reliable and easy-to-use methods for the mechanical analysis of complex connector springs are described. The springs are classified according to their aspect ratio of length over thickness. Normal contact forces, insertion forces, and maximum stress are calculated for typical examples of low- and high-aspect-ratio springs. Experimental data are in good agreement with theoretical predictions. Frict... View full abstract»

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  • The Use of an Industrial X-Ray Source for Electronic Component Radiation Effects Work

    Publication Year: 1980, Page(s):144 - 149
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (944 KB)

    Low energy X-ray tubes have been used as a source of ionizing radiation in various past radiation effects studies. In such studies there has not been a requirement for the absolute dose to be known, and little detail has been reported regarding the tube characteristics and the type of dosimetry employed. The use of an industrial X-ray source for space environment simulation is an attractive techni... View full abstract»

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Aims & Scope

This Transaction ceased production in 1993. The current publication is titled IEEE Transactions on Components, Packaging, and Manufacturing Technology.

Full Aims & Scope