Q&A Corner : Answer
Please tell me measurement conditions and instruments used to get characteristic data of ceramic capacitors.
Please refer to following explanations.
| Measurement instruments | LCR meter HP4284A or E4980A by Keysight Technologies |
|---|---|
| Jigs | 16034A,16034E,16034G,16034H(<DC50V) 16065A(≥DC50V) by Keysight Technologies |
| DC power supplies | internal power supply in LCR meter (rated voltage ≤ 35V) Takasago Ltd.GP0650-05R (rated voltage : 50 to 100V) HV1.5-1 (rated voltage : 250 to 630V) |
| Measuring frequency | Class 1 1MHz±10% (C ≤ 1000pF) 1kHz±10% (C > 1000pF) Class 2 1kHz±10% (C ≤ 10uF) 120Hz±10Hz (C > 10uF) |
| Ambient temperature | 25±2℃ |
(2) Temperature characteristics
| Measurement instruments | LCR meter HP4284A or E4980A by Keysight Technologies |
|---|---|
| Temperature chamber | HC-360 by ESPEC |
| Measuring Frequency | Class 1 1MHz±10% (C ≤ 1000pF) 1kHz±10% (C > 1000pF) Class 2 1kHz±10% (C ≤ 10uF) 120Hz±10Hz (C > 10uF) |
(3) Ripple current characteristics
| Multifunction generator | WF1947 by NF Corporation |
|---|---|
| Bipolar amplifier | HSA4014 by NF Corporation |
| Infrared thermometer | IT2-50 by KEYENCE |
| Measuring frequency | 10kHz, 100kHz, 1MHz |
| Ambient temperature | 25±2℃ |
Measurement Figure
In measurement system above, the current is increased while measuring temperature of the product and the ripple current value at that temperature. That is done until the temperature achieves 20℃ over the initial state. This procedure is repeated for each frequency specified in the table above.
(4) Impedance and capacitance frequency characteristics
Please refer to this.
