TAJA475M020RNJ vs T494A105K020AT
| Part Number |
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| Category | Tantalum Capacitors | Tantalum Capacitors |
| Manufacturer | KYOCERA AVX | KEMET |
| Description | CAP TANT 4.7UF 20% 20V 1206 | CAP TANT 1UF 10% 20V 1206 |
| Package | Cut Tape (CT) | Tape & Reel (TR) |
| Series | TAJ | T494 |
| 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 | ±20% | ±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 | 20 V | 20 V |
| Lead Spacing | - | - |
| Ratings | - | - |
| Height - Seated (Max) | 0.071\" (1.80mm) | 0.071\" (1.80mm) |
| Capacitance | 4.7 µF | 1 µF |
| ESR (Equivalent Series Resistance) | 4Ohm | 5.5Ohm |
| Lifetime @ Temp. | - | 2000 Hrs @ 125°C |
| Failure Rate | - | - |
| Manufacturer Size Code | A | A |
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1. What is the expected life of tantalum capacitors?
Under normal circumstances, it can range from thousands of hours to tens of thousands of hours, depending on the working conditions and manufacturer specifications.
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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 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.
