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  • BSI
    BS EN 60444-8:2017 Measurement of quartz crystal unit parameters - Test fixture for surface mounted quartz crystal units
    Edition: 2017
    $313.97
    / user per year

Description of BS EN 60444-8:2017 2017

This part of IEC 60444 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 π-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.



Standard NumberBS EN 60444-8:2017
TitleMeasurement of quartz crystal unit parameters - Test fixture for surface mounted quartz crystal units
StatusDefinitive
Publication Date2017-05-26
ReplacesBS EN 60444-8:2003
Identical National Standard OfEN 60793-2-50:2008, IEC 60793-2-50:2008, EN 60444-8:2017, IEC 60444-8:2016
DescriptorsDielectric devices, Piezoelectric devices, Crystal resonators, Resonators
ICS31.140 Piezoelectric devices
CommitteeW/-
ISBN978 0 580 83114 0
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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