302R29W681KV3E-****-SC vs GRM319R71E474KA01J
| Part Number |
|
|
| Category | Ceramic Capacitors | Ceramic Capacitors |
| Manufacturer | Johanson Dielectrics Inc. | Murata Electronics |
| Description | CAP CER 680PF 250VAC X7R 1808 | CAP CER 0.47UF 25V X7R 1206 |
| Package | Cut Tape (CT) | 1206 (3216 Metric) |
| Series | SC | GRM |
| Features | - | - |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount, MLCC | Surface Mount, MLCC |
| Package / Case | 1808 (4520 Metric) | 1206 (3216 Metric) |
| Applications | Safety | General Purpose |
| Tolerance | ±10% | ±10% |
| Temperature Coefficient | X7R | X7R |
| Size / Dimension | 0.189" L x 0.080" W (4.80mm x 2.03mm) | 0.126" L x 0.063" W (3.20mm x 1.60mm) |
| Voltage - Rated | 250V | 25V |
| Lead Spacing | - | - |
| Thickness (Max) | 0.085\" (2.16mm) | 0.037" (0.95mm) |
| Ratings | X2 | - |
| Height - Seated (Max) | - | - |
| Capacitance | 680 pF | 0.47µF |
| Lead Style | - | - |
| Failure Rate | - | - |
-
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 are mica capacitors so expensive?
Mica capacitors are expensive because of their excellent electrical properties (such as very low dissipation factor and stable temperature coefficient) and their high production costs.
-
4. Can I replace ceramic capacitors with film capacitors?
Film capacitors can be used to replace ceramic capacitors in some application scenarios, especially when better temperature stability and lower losses are required.
