Hermeticity of electronic packages / by Hal Greenhouse.

Format:

Book

Author/Creator:

Greenhouse, Hal.

Series:

Materials science and process technology series.

Materials science and process technology series

Language:

English

Subjects (All):

Electronic packaging.

Electronics--Materials--Permeability.

Electronics.

Sealing (Technology).

Physical Description:

1 online resource (417 p.)

Place of Publication:

Park Ridge, N.J. : Norwich, N.Y. : Noyes Publications, c2000.

Language Note:

English

Summary:

This is a book about the integrity of sealed packages to resist foreign gases and liquids penetrating the seal or an opening (crack) in the package-especially critical to the reliability and longevity of electronics. The author explains how to predict the reliability and the longevity of the packages based on leak rate measurements and the assumptions of impurities. Non-specialists in particular will benefit from the author's long involvement in the technology. Hermeticity is a subject that demands practical experience, and solving one problem does not necessarily give one the background to so

Contents:

Front Cover; About the Author; Hermeticity of Electronic Packages; Copyright Page; Dedication; Preface; Contents; Chapter 1. Gas Kinetics; 1.0 GENERAL CONSIDERATIONS; 2.0 MATHEMATICAL RELATIONSHIPS; 3.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES; Chapter 2. Viscous and Molecular Conductance of Gases; 1.0 CONDUCTION OF GASES; 2.0 VISCOUS CONDUCTION; 3.0 MOLECULAR CONDUCTION; 4.0 CONDUCTION IN THE TRANSITIONAL RANGE; 5.0 COMPOSITE CONDUCTANCE EQUATIONS; 6.0 SMALLEST THEORETICAL LEAK; 7.0 DISCUSSION; 8.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES; Chapter 3. The Flow of Gases

1.0 GENERAL FLOW CHARACTERISTICS2.0 MEASURED, STANDARD AND TRUE LEAK RATES; 3.0 LEAK RATES FOR DIFFERENT GASES; 4.0 CHANGE OF PARTIAL PRESSURE WITH TIME; 5.0 VISCOUS FLOW FROM SEALED PACKAGES; 6.0 VISCOUS FLOW RATES OF DIFFERENT GASES; 7.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES; Chapter 4. The Flow of Gases into Sealed Packages; 1.0 MOLECULAR FLOW; 2.0 VISCOUS FLOW INTO AND OUT OF SEALED PACKAGES; 3.0 THE SIMULTANEOUS FLOW OF GASES IN BOTH DIRECTIONS; 4.0 PROBLEMS AND THEIR SOLUTIONS; Chapter 5. Water in Sealed Packages; 1.0 WATER RELATED CORROSION AND CIRCUIT FAILURES

2.0 WATER LEAKING INTO A SEALED PACKAGE FROM THE OUTSIDE ENVIRONMENT3.0 WATER OUTGASSING INSIDE THE PACKAGE; 4.0 WATER AS A RESULT OF A CHEMICAL REACTION WITHIN THE PACKAGE; 5.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES; Chapter 6. Understanding Helium Fine Leak Testing in Accordance with Method 1014. MIL-STD-883; 1.0 PURPOSE OF THE TEST; 2.0 BASIS OF THE TEST; 3.0 FIXED METHOD OF TESTING; 4.0 FLEXIBLE METHOD OF TESTING; 5.0 COMPARISON OF THE FIXED AND FLEXIBLE METHODS; 6.0 THE EFFECT OF VISCOUS FLOW; 7.0 LEAK RATE LIMITS ARE TOO LENIENT; 8.0 BACKFILLING THE PACKAGE WITH HELIUM

9.0 BOMBING AFTER BACKFILLING10.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES; Chapter 7. Fine Leak Measurements Using a Helium Leak Detector; 1.0 PRINCIPLE OF OPERATION; 2.0 DEFINITIONS; 3.0 CALIBRATION USING A STANDARD LEAK; 4.0 MEASUREMENT ERRORS, NOT INCLUDING BACKGROUND ERRORS; 5.0 BACKGROUND ERRORS; 6.0 ERRORS DUE TO HELIUM ON THE EXTERNAL SURFACE OF THE PACKAGE; 7.0 MINIMUM DETECTABLE LEAK (MDL); 8.0 CORRELATION OF STANDARD LEAKS; 9.0 LOCATING LEAKS IN PACKAGES; 10.0 PROBLEMS AND THEIR SOLUTIONS; Chapter 8. Gross Leaks; 1.0 INTRODUCTION; 2.0 FORCING A LIQUID INTO A PACKAGE

3.0 FLUOROCARBON VAPOR EXITING A PACKAGE4.0 THE BUBBLE TEST; 5.0 THE VAPOR DETECTION TEST; 6.0 THE WEIGHT GAIN TEST; 7.0 OPTICAL LEAK TEST; 8.0 PENETRANT DYE TEST; 9.0 FLUOROCARBONS FROM A RESIDUAL GAS ANALYSIS; 10.0 QUANTITATIVE COMPARISON OF GROSS LEAK TEST METHODS; 11.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES; Chapter 9. The Permeation of Gases Through Solids; 1.0 DESCRIPTION OF THE PERMEATION PROCESS; 2.0 EFFECT OF TEMPERATURE ON PERMEATION; 3.0 TREATING PERMEATION AS A LEAK RATE; 4.0 WATER VAPOR PASSING THROUGH PLASTICS; 5.0 PROBLEMS AND THEIR SOLUTIONS; REFERENCES

Chapter 10. Residual Gas Analysis (RGA)

Notes:

Description based upon print version of record.

Includes bibliographical references and index.

ISBN:

9786612769528

0-08-094671-2

1-282-76952-9

1-282-01096-4

9786612010965

0-8155-1785-8

1-59124-099-9

OCLC:

437108150