1、 IEC 60758Edition 4.0 2008-11INTERNATIONAL STANDARD Synthetic quartz crystal Specifications and guidelines for use IEC 60758:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008
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9、R INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60758Edition 4.0 2008-11INTERNATIONAL STANDARD Synthetic quartz crystal Specifications and guidelines for use INTERNATIONAL ELECTROTECHNICAL COMMISSION XICS 31.140 PRICE CODEISBN 2-8318-1016-2 Registered trademark of the Interna
10、tional Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60758 IEC:2008(E)CONTENTS FOREWORD.5 1 Scope.7 2 Normative references.7 3 Terms and definitions.7 4 Specification for as-grown synthetic quartz crysta
11、l.11 4.1 Standard values.11 4.1.1 Orientation of the seed.11 4.1.2 Inclusion density.11 4.1.3 Infrared quality indications,3500,3585,3410.11 4.1.4 Frequency-versus-temperature characteristics(Figure 4 and 4.2.7).12 4.1.5 Etch channel density.12 4.2 Requirements and measuring methods.13 4.2.1 Orienta
12、tion.13 4.2.2 Handedness.13 4.2.3 Synthetic quartz crystal dimensions.13 4.2.4 Seed dimensions.13 4.2.5 Imperfections.13 4.2.6 Evaluation of infrared quality by alpha-measurement.15 4.2.7 Frequency versus temperature characteristics.17 4.2.8 Etch channel density.18 4.3 Marking.19 4.3.1 Shipping requ
13、irements.19 5 Specification for lumbered synthetic quartz crystal.20 5.1 Standard values.20 5.1.1 Tolerance of dimensions.20 5.1.2 Reference surface flatness.20 5.1.3 Angular tolerance of reference surface.20 5.1.4 Centrality of the seed.20 5.2 Requirements and measuring methods.20 5.2.1 As-grown qu
14、artz bars used for lumbered quartz bars.20 5.2.2 Dimensions of lumbered synthetic quartz crystal.20 5.2.3 Identification on reference surface.20 5.2.4 Measurement of reference surface flatness.20 5.2.5 Measurement of reference surface angle tolerance.20 5.2.6 Centrality of the seed.20 5.3 Delivery c
15、onditions.21 5.3.1 Marking.21 5.3.2 Packing.21 5.3.3 Making batch.21 6 Inspection rule for synthetic quartz crystal and lumbered synthetic quartz crystal.21 6.1 Inspection rule for as-grown synthetic quartz crystal.21 6.1.1 Inspection.21 6.1.2 Lot-by-lot test.21 6.2 Inspection rule for lumbered synt
16、hetic quartz crystal.22 6.2.1 Lot-by-lot test.23 7 Guidelines for the use of synthetic quartz crystal.23 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60758 IEC:2008(E)3 7.1 General.23 7.1.1 Overview.23 7.1.2 Synthetic quartz crystal.23 7.2 Shape and size of synthetic quartz crystal.24 7.2.1 Crystal axis and face designation.24 7.2.2 Seed.24 7.2.3 Shapes and dimensions.24 7.2.4 Growth zones.24 7.3 Standard method for evaluating t
