IEC 62024-1:2017 pdf download

IEC 62024-1:2017 pdf download.High frequency inductive components – Electrical characteristics and measuring methods
1 Scope
This part of IEC 62024 specifies electrical characteristics and measuring methods for the nanohenry range chip inductor that is normally used in high frequency (over 1 00 kHz) range.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61 249-2-7, Materials for printed boards and other interconnecting structures – Part 2-7: Reinforced base materials clad and unclad – Epoxide woven E-glass laminated sheet of defined flammability (vertical burning test) copper-clad IEC 62025-1 , High frequency inductive components – Non-electrical characteristics and measuring methods – Part 1: Fixed, surface mounted inductors for use in electronic and telecommunication equipment ISO 6353-3, Reagents for chemical analysis – Part 3: Specifications – Second series ISO 9453, Soft solder alloys – Chemical compositions and forms
3 Terms and definitions
No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp
4 Inductance, Q-factor and impedance
4.1 Inductance 4.1 .1 Measuring method The inductance of an inductor is measured by the vector voltage/current method. 4.1 .2 Measuring circuit An example of the circuit for the vector voltage/current method is shown in Figure 1.
4.1 .3 Mounting the inductor for the test 4.1 .3.1 General The inductor shall be measured in a test fixture as specified in the relevant standard. If no fixture is specified, one of the following test fixtures A or B shall be used. The fixture used shall be reported. 4.1 .3.2 Fixture A The shape and dimensions of fixture A shall be as shown in Figure 2 and Table 1 .The electrodes of the test fixture shall contact the electrodes of the inductor under test by mechanical force provided by an appropriate method. This force shall be chosen so as to provide satisfactory measurement stability without influencing the characteristics of the inductor. The electrode force shall be specified. The structure between the measurement circuit and the test fixture shall maintain a characteristic impedance as near as possible to 50 Ω.The electrodes of the test fixture shall be in contact with the electrodes of the inductor under test by mechanical force provided by an appropriate method. This force shall be chosen so as to provide satisfactory measurement stability without influencing the characteristics of the inductor. The electrode force shall be specified. The structure between the measurement circuit and the test fixture shall maintain a characteristic impedance as near as possible to 50 Ω. Dimension d shall be specified between parties concerned. 4.1 .4 Measuring method and calculation formula Inductance L x of the inductor L x is defined by the vector sum of reactance caused by L s and C d (see Figure 1 ). The frequency f of the signal generator output signal shall be set to a frequency as separately specified. The inductor under test shall be connected to the measurement circuit by using the test fixture as described above. Vector voltage E 1 and E 2shall be measured by vector voltage meters Ev 1 and Ev 2 , respectively. The inductance L x shall be calculated by the following formula