T491A155K010AT vs T491A335K006AT
| Part Number |
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| Category | Tantalum Capacitors | Tantalum Capacitors |
| Manufacturer | KEMET | KEMET |
| Description | CAP TANT 1.5UF 10% 10V 1206 | CAP TANT 3.3UF 10% 6.3V 1206 |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | T491 | T491 |
| 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 | 1206 (3216 Metric) | 1206 (3216 Metric) |
| Tolerance | ±10% | ±10% |
| Size / Dimension | 0.126" L x 0.063" W (3.20mm x 1.60mm) | 0.126" L x 0.063" W (3.20mm x 1.60mm) |
| Voltage - Rated | 10 V | 6.3 V |
| Lead Spacing | - | - |
| Ratings | - | - |
| Height - Seated (Max) | 0.071\" (1.80mm) | 0.071\" (1.80mm) |
| Capacitance | 1.5 µF | 3.3 µF |
| ESR (Equivalent Series Resistance) | 8Ohm | 8Ohm |
| Lifetime @ Temp. | 2000 Hrs @ 125°C | 2000 Hrs @ 125°C |
| Failure Rate | - | - |
| Manufacturer Size Code | A | A |
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1. Difference between ordinary capacitors and tantalum capacitors
Material: Ordinary capacitors can be aluminum electrolytic capacitors, ceramic capacitors, etc.; while tantalum capacitors use metal tantalum as anode material.
Performance: Generally, tantalum capacitors have better temperature stability and higher capacity-to-volume ratio.
Application range: Due to its performance characteristics, tantalum capacitors are often used in miniaturized electronic products that require high reliability. -
2. Why do tantalum capacitors explode?
The main reason is that excessive voltage or current shocks cause internal short circuits, which trigger thermal runaway.
Excessive ambient temperature may also exacerbate this situation. -
3. Will tantalum capacitors deteriorate?
Yes, tantalum capacitors may gradually lose some of their performance when stored for a long time or in adverse environments.
For example, long-term exposure to high temperature and humidity may cause the electrolyte to evaporate or chemically change. -
4. What special precautions must be taken when installing tantalum capacitors?
Ensure the correct polarity connection.
Be careful not to exceed the rated voltage.
Use appropriate fuses or other protective devices to prevent overcurrent.
Consider heat dissipation design to avoid local overheating.
