C907U390JZSDAA7317 vs C907U330JZSDCA7317
| Part Number |
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| Category | Ceramic Capacitors | Ceramic Capacitors |
| Manufacturer | KEMET | KEMET |
| Description | CAP CER 9PF 440VAC SL RADIAL | CAP CER 33PF 440VAC SL RADIAL |
| Package | Tape & Box (TB) | Tape & Box (TB) |
| Series | C900AC SFTY X1-440 Y2-300 | C900AC SFTY X1-440 Y2-300 |
| Features | - | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc |
| Applications | Safety | Safety |
| Tolerance | ±5% | ±5% |
| Temperature Coefficient | SL | SL |
| Size / Dimension | 0.276\" Dia (7.00mm) | 0.276\" Dia (7.00mm) |
| Voltage - Rated | 440VAC | 440VAC |
| Lead Spacing | 0.295\" (7.50mm) | 0.295\" (7.50mm) |
| Thickness (Max) | - | - |
| Ratings | X1, Y2 | X1, Y2 |
| Height - Seated (Max) | - | - |
| Capacitance | 9 pF | 33 pF |
| Lead Style | Straight | Formed Leads - Kinked |
| Failure Rate | - | - |
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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. What is the difference between ceramic capacitors and electrolytic capacitors?
Polarity: Ceramic capacitors are non-polar, while electrolytic capacitors are polar.
Capacity range: Electrolytic capacitors generally offer larger capacitance values.
Stability: Ceramic capacitors are more stable, especially when the temperature changes.
Lifespan: Ceramic capacitors have a longer lifespan because there is no liquid electrolyte to dry out. -
3. Do ceramic capacitors have a shelf life?
Ceramic capacitors themselves do not have a strict shelf life, but after long-term storage, testing is recommended to confirm their performance.
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4. What is the difference between Class 1 and Class 2 ceramic capacitors?
Class 1: has high accuracy and stable temperature coefficient, suitable for precision circuits.
Class 2: has higher capacitance value, but larger temperature coefficient and tolerance, suitable for general applications.
