TCUU10102DP Просмотр технического описания (PDF) - Token Electronics Industry Co., Ltd.

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TCUU10102DP

TCUU EMI Line Filters

Token Electronics Industry Co., Ltd. 

TOKEN

Measurements of Fixed Inductors

Measurements of

Fixed Inductors

Measurements of Fixed Inductors

Inductance

The inductance is measured with a Q-meter, LCR meter or animpedance analyzer.

● Fixed inductors for signals: Use of a Q-meter in which the frequency is for direct readout of the

inductance or at the specified frequency.

● Inductors for high current power line circuits: 1kHz or 100kHz.

Q Factor

The unloaded Q is measured with a Q-meter, LCR meter orimpedance analyzer. The frequency of

measurement is that at which the inductance hasbeen measured or at a different frequency as specified.

However, forhigh current power line inductors, the resistance is measured andthe Q may be neglected.

DCR (DC Resistance), SRF (Self-Resonant Frequency)

DCR: A digital multimeter is used for measurement;

SRF: Measured with a Q-meter, impedance analyzer or network analyzer.

Dielectric Strength

For specimen coil, apply 100V DC for 5 seconds between the shielding case and terminals. There

should be no damage orabnormalities in the inductor.

Maximum Allowable Current

The maximum allowable current is a DC Current which causes initialinductance to decrease by 10%

or 30%. Or coil temperature to rise by 20°C or 40°C, whichever is smaller. (Reference ambient tem-

perature: 20°C)

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