C1812C472KDRACTU vs EMK325B7226MMHT
| Part Number |
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| Category | Ceramic Capacitors | Ceramic Capacitors |
| Manufacturer | KEMET | Taiyo Yuden |
| Description | CAP CER 4700PF 1KV X7R 1812 | CAP CER 22UF 16V X7R 1210 |
| Package | 1812 (4532 Metric) | 1210 (3225 Metric) |
| Series | C | M |
| Features | High Voltage | - |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount, MLCC | Surface Mount, MLCC |
| Package / Case | 1812 (4532 Metric) | 1210 (3225 Metric) |
| Applications | General Purpose | Automotive |
| Tolerance | ±10% | ±20% |
| Temperature Coefficient | X7R | X7R |
| Size / Dimension | 0.177" L x 0.126" W (4.50mm x 3.20mm) | 0.126" L x 0.098" W (3.20mm x 2.50mm) |
| Voltage - Rated | 1000V (1kV) | 16V |
| Thickness (Max) | 0.061" (1.55mm) | 0.106" (2.70mm) |
| Capacitance | 4700pF | 22µF |
| Ratings | - | AEC-Q200 |
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1. Why do ceramic capacitors short?
Overvoltage: Exceeding the rated voltage may cause internal breakdown.
Mechanical damage: External impact or pressure.
Manufacturing defects: Problems with the internal structure. -
2. How do I know if my ceramic capacitor is bad?
Visual inspection: Check for cracks, bulges, or other physical damage.
Multimeter test: Measure the capacitance value to see if it is close to the nominal value, and check for shorts or opens. -
3. Why do ceramic capacitors make noise?
Some types of ceramic capacitors (particularly Class 2 ceramic capacitors) produce micro-vibrations when the voltage changes due to their material properties, which in turn cause faint mechanical noise.
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4. Do ceramic capacitors degrade over time?
The capacitance value of ceramic capacitors may decrease slightly over time and environmental factors, but this is usually a slow process.
