F920J475MPA vs F921A335MPA
| Part Number |
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| Category | Tantalum Capacitors | Tantalum Capacitors |
| Manufacturer | KYOCERA AVX | KYOCERA AVX |
| Description | CAP TANT 4.7UF 20% 6.3V 0805 | CAP TANT 3.3UF 20% 10V 0805 |
| Package | -Reel® | -Reel® |
| Series | F92 | F92 |
| Type | Molded | Molded |
| Features | General Purpose | General Purpose |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 0805 (2012 Metric) | 0805 (2012 Metric) |
| Tolerance | ±20% | ±20% |
| 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 | 6.3 V | 10 V |
| Lead Spacing | - | - |
| Ratings | - | - |
| Height - Seated (Max) | 0.039\" (1.00mm) | 0.039\" (1.00mm) |
| Capacitance | 4.7 µF | 3.3 µF |
| ESR (Equivalent Series Resistance) | 6Ohm | 12Ohm |
| Lifetime @ Temp. | - | - |
| Failure Rate | - | - |
| Manufacturer Size Code | P | P |
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1. Why are tantalum capacitors so expensive?
Tantalum ore resources are scarce and the mining cost is high.
The manufacturing process is complex and the yield is relatively low.
It has excellent electrical characteristics, making it indispensable in high-end applications. -
2. Can I use ceramic capacitors instead of tantalum capacitors?
It depends on the specific situation. If the size, ESR requirements are not high and a specific capacitance value is not required, you can consider replacing it.
But be aware that there are differences in physical properties between the two, and direct replacement may affect the working state of the circuit. -
3. Is tantalum better than tungsten?
It depends on the application. For capacitors, tantalum is preferred due to its unique properties; while in some other industrial uses, such as making filaments, tungsten is preferred.
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4. What causes tantalum capacitors to burn out?
Common causes include applying a voltage exceeding the maximum allowable value, excessive current, high ambient temperature, and manufacturing defects.
