Murata 4268A Manual Download Page 1

 

Capacitance and Dissipation Factor 

Measurement of 

Chip Multilayer Ceramic Capacitors 

 

Page 

1. Introduction ---------------------------------------------------------------- 1 

2. Characteristics of Chip Multilayer Capacitors -------------------- 1 

2-1. Temperature Characteristic 

2-2. Voltage Characteristic 

(1) AC Voltage Characteristic 

(2) DC Bias Characteristic 

2-3. Frequency Characteristic 

2-4. Summary 

3. LCR Meters and Measurement Jigs -------------------------------- 6 

3-1. LCR Meters 

3-2. Measurement Jigs 

4. LCR Meter Measurement Principle --------------------------------- 7 

4-1. Measurement Principle 

4-2. Measuring Voltage 

4-3. Capacitance Measurement Circuit Mode 

5. Capacitance Measurement by LCR Meter 4284A -------------- 10 

6. Capacitance Measurement by LCR Meter 4278A -------------- 14 

7. Closing ---------------------------------------------------------------------- 18 

References -------------------------------------------------------------------- 18 

 

 

 

 

 

 

 

 

 

 

 

TD No.C10E

Murata Mfg. Co., Ltd. 

Summary of Contents for 4268A

Page 1: ...haracteristic 2 DC Bias Characteristic 2 3 Frequency Characteristic 2 4 Summary 3 LCR Meters and Measurement Jigs 6 3 1 LCR Meters 3 2 Measurement Jigs 4 LCR Meter Measurement Principle 7 4 1 Measurem...

Page 2: ...tions is 25 degree Table 1 Measuring Conditions Nominal Capacitance Measuring Frequency Measuring Voltage C 10 F 10V or greater 1 0 1kHz 1 0 0 2Vrms C 10 F 6 3V or less 1 0 1kHz 0 5 0 1Vrms C 10 F 120...

Page 3: ...d to over a wider range of 22 82 Dissipation factor also changes according to measurement temperature which tends to go up in lower temperatures for both X7R and Y5V characteristic capacitors 1206type...

Page 4: ...c capacitors drops by 50 at the maximum and changes according to applied AC voltage level Although the dissipation factor of Y5V characteristic capacitor also changes significantly according to the me...

Page 5: ...ed while the capacitance of the Y5V characteristic capacitor drops as much as 90 The capacitance of MLCC capacitors decreases as applied DC bias voltage increases Also dissipation factors of those cap...

Page 6: ...ops lower than 50 is that generally it is not possible to apply 1Vrms with the usual impedance analyzer e g LCR meter to the Y5V characteristic capacitor at these shown frequency steps and 0 1Vrms is...

Page 7: ...alues at the intended environment and operating conditions 3 LCR Meters and Measuring Jigs Typical LCR meters and measurement jigs are introduced in this section 3 1 LCR Meters LCR meters are generall...

Page 8: ...ion 4 1 Measurement Principle The typical measurement system of LCR meters is the automatic balancing bridge method which is shown in Fig 7 In Fig 7 a high gain amplifier automatically adjusts the gai...

Page 9: ...2 Edut E0 Rin R 2 X 2 X 1 C 1 2 fC Thus the measurement voltage of capacitor is different from the power supply voltage Therefore we recommend using a LCR meter that automatically maintains the measu...

Page 10: ...tched at about 10 in relation to internal impedance of LCR meter The relationship between capacitance and impedance is shown in Fig 11 The Electric Capacitance 4 7 and Dielectric Dissipation Factor 4...

Page 11: ...nt conditions using Measure Setup screen see Fig 13 1 FUNC Cp D 2 FREQ and LEVEL See Table 1 Fig 12 LCR Meter with Jig Installed Fig 13 Measure Setup Screen Note 1 If FREQ and or LEVEL is not correctl...

Page 12: ...ditions Vm in C field indicates the actual measurement voltage monitored by the meter which shows only about 21mv against set value 1V Fig 15 Measurement Conditions 1kHz 1Vrms 3 Hi PW High Power ON an...

Page 13: ...surement voltage monitored by the meter which shows 1V being applied to the sample B field shows the capacitance of a 10 F product which is about 9 86 F which is within the specified tolerance Fig 17...

Page 14: ...under test is to apply plus and minus probes of the tester to both terminals respectively of the capacitor set into measurement jig and read the indicated voltage A photograph in which measurement vo...

Page 15: ...a Rs reading of 0 03 or less a 16034E b 16334A Fig 22 Short Condition 2 Open Calibration Adjust open distance to a size of chip capacitor to be measured See Fig 23 for open condition a 16034E b 16334A...

Page 16: ...n in Fig 25 1 Setting items to be measured MENU MEAS PARAMETER Cp D 2 Setting measuring frequency and voltage MENU SIGMAL SOURCE FREQ 1kHz OSC 1 0V Note 4 4278A provides two types frequencies 1kHz and...

Page 17: ...ip capacitor in which measurement frequency is set to 1kHZ and measurement voltage to 1Vrms Actual measurement voltage is about 1 0Vrms and measured capacitance is about 10 4 F Fig 26 Measurement Volt...

Page 18: ...high dielectric MLCC capacitors with BaTiO3 system Some public standards have an appendix for supplemental explanation about the aging of electric capacitance Multilayer Capacitor IEC 60384 22 Annex...

Page 19: ...ey points in the measurement that are likely to be mistaken or overlooked We hope that this brochure is useful for your capacitor measurement References 4284A Operation Manual Agilent Technologies Cor...

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