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Publication details

Publication CODE Title
IEC 60444-8:2016 (2016-12) MEASUREMENT OF QUARTZ CRYSTAL UNIT PARAMETERS - PART 8 : TEST FIXTURE FOR SURFACE MOUNTED QUARTZ CRYSTAL UNITS
 
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85.00 € 15 P..
Description
IEC 60444-8:2016 describes test fixtures suitable for leadless surface mounted quartz crystal units in enclosures as defined in IEC 61837 (all parts). These fixtures allow the measurement of (series) resonance frequency, (series) resonance resistance, and equivalent electrical circuit parameters L1, C1 and C0 using the measurement techniques specified in IEC 60444-5 and for the determination of  load resonance frequency and load resonance resistance according to IEC TR 60444-4 and IEC 60444-11.
Two test fixtures are described in this document:
1)   A fixture using the p-network circuit with electrical values as described in IEC 60444-1 for measurements in transmission mode up to 500 MHz. This fixture includes optional means to add physical load capacitors for the measurement of load resonance parameters up to 30 MHz in accordance with IEC 60444-4. The range of load capacitance is 10 pF or more. Calibration of the measurement system and CL adapter board is explained hereinafter.
2)   A fixture based on the reflection method, suitable for a frequency range up to 1 200 MHz. No provisions for adding a physical load capacitance are anticipated. Load resonance parameters can be measured by using the method of IEC 60444-11.
This edition includes the following significant technical changes with respect to the previous edition:
a)   modification of Clause 1;
b)   modification of 5.2;
c)   modification of 5.3;
d)   modification of 5.4;
e)   6.3 Calibration of the reflection measurement system.
Class  C990  (IEC PUBLICATIONS IEC PUBLICATIONS)
Available files
EN version

EN/FR version

Status
Status IEC PUBLICATION
Situation Currently active
Replaces  IEC 60444-8:2003
Origin
Committee TC 49
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR FREQUENCY CONTROL AND SELECTION
Responsible Monsieur DE LEEUW Thierry, Technical Officer
Diamant Building Bd Auguste Reyers, 80
1030  BRUXELLES
Phone: +32 2 706 85 72
E-mail: thierry.deleeuw@ceb-bec.be
Approval
BEC Approval 2016-12-15
ICS-Code (International Standards Classification) 31.140
NBN Status New
IEC publication date 2016-12-15
IEC stability date 2020-12-31
IEC file modification date 2016-12-15
IEC last modification date 2020-01-02