VJ0402D2R4DXBAP vs VJ0402D2R2DXCAP
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| Category | Ceramic Capacitors | Ceramic Capacitors |
| Manufacturer | Vishay Vitramon | Vishay Vitramon |
| Description | CAP CER 2.4PF 100V C0G/NP0 0402 | CAP CER 2.2PF 200V C0G/NP0 0402 |
| Package | 0402 (1005 Metric) | 0402 (1005 Metric) |
| Series | VJ HIFREQ | VJ HIFREQ |
| Features | High Q, Low Loss | High Q, Low Loss |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount, MLCC | Surface Mount, MLCC |
| Package / Case | 0402 (1005 Metric) | 0402 (1005 Metric) |
| Applications | RF, Microwave, High Frequency | RF, Microwave, High Frequency |
| Tolerance | ±0.5pF | ±0.5pF |
| Temperature Coefficient | C0G, NP0 | C0G, NP0 |
| Size / Dimension | 0.040" L x 0.020" W (1.02mm x 0.51mm) | 0.040" L x 0.020" W (1.02mm x 0.51mm) |
| Voltage - Rated | 100V | 200V |
| Thickness (Max) | 0.024" (0.61mm) | 0.024" (0.61mm) |
| Capacitance | 2.4pF | 2.2pF |
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1. What are ceramic capacitors used for?
Ceramic capacitors are widely used in various electronic devices, mainly for:
Coupling and decoupling: used in circuits to isolate DC signals while transmitting AC signals.
Filtering: remove noise from the power supply or smooth the output voltage.
Resonant circuit: such as oscillators in radio frequency (RF) circuits.
Temperature compensation: some types of ceramic capacitors have temperature coefficients that can be used to stabilize circuit performance.
Bypass: provide a low impedance path for high-frequency signals, thereby reducing the impact on other parts. -
2. Why are ceramic capacitors better?
Small size: suitable for high-density circuit board design.
Good temperature resistance: can work over a wide temperature range.
High reliability: no electrolyte, so it is not easy to age.
Good frequency response: suitable for high-frequency applications.
Low ESR: low equivalent series resistance, which helps to improve efficiency. -
3. Does the voltage of ceramic capacitors matter?
Voltage ratings are critical to ensure safe operation. Using a capacitor below the rated voltage may cause premature failure; using a capacitor above the rated voltage may cause immediate damage.
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4. Can ceramic capacitors be used in AC?
Ceramic capacitors are well suited for AC circuits because they have good frequency response characteristics and low losses.
