C0805X183J8JAC7800 vs C0805X123J3JAC7800
| Part Number |
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| Category | Ceramic Capacitors | Ceramic Capacitors |
| Manufacturer | KEMET | KEMET |
| Description | CAP CER 0.018UF 10V U2J 0805 | CAP CER 0.012UF 25V U2J 0805 |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | SMD Comm U2J Flex | SMD Comm U2J Flex |
| Features | Low ESL, Soft Termination, Low Dissipation Factor | Low ESL, Soft Termination, Low Dissipation Factor |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount, MLCC | Surface Mount, MLCC |
| Package / Case | 0805 (2012 Metric) | 0805 (2012 Metric) |
| Applications | Boardflex Sensitive | Boardflex Sensitive |
| Tolerance | ±5% | ±5% |
| Temperature Coefficient | U2J | U2J |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) | 0.079" L x 0.049" W (2.00mm x 1.25mm) |
| Voltage - Rated | 10V | 25V |
| Lead Spacing | - | - |
| Thickness (Max) | 0.034\" (0.87mm) | 0.034\" (0.87mm) |
| Ratings | - | - |
| Height - Seated (Max) | - | - |
| Capacitance | 0.018 µF | 0.012 µF |
| Lead Style | - | - |
| Failure Rate | - | - |
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1. Do ceramic capacitors deteriorate over time?
While ceramic capacitors are relatively stable, their capacitance value may decrease slightly over time, especially under extreme environmental conditions. However, this change is usually small and will not significantly affect most applications.
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2. Can I replace film capacitors with ceramic capacitors?
In many cases, ceramic capacitors can be used to replace film capacitors, especially when smaller size and lower cost are required. However, it is important to note that ceramic capacitors may have different temperature coefficients and self-healing characteristics, which may affect performance in a specific application.
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3. Should ceramic capacitors have continuity?
A properly functioning ceramic capacitor should show a certain capacitance value between its pins, not completely on or off.
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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.

