A CA55 conductive polymer SMD tantalum capacitor produced by BEC is a high-performance electronic component which uses a sintered tantalum anode and a highly conductive polymer as the cathode. At the core, the traditional MnO₂ solid electrolyte is replaced by a conductive polymer electrolyte, in doing so extra low ESR values can be achieved. In the meantime, better ripple current handling, faster transient response and improved stability make sure this series of capacitors play a key role in power filtering, decoupling and high-frequency applications in many applications. High volumetric efficiency of tantalum is combined with the superior electrical properties of polymer cathodes, and they can provide higher capacitance in relatively smaller packages. They can be used in the industry of automotive, telecom and security, also seen in computers and mobile phones.
Basic Parameters
|
Product Category |
CA55 Conductive Polymer SMD tantalum capacitor |
|
Capacitance Range |
0.22UF~1000UF |
|
Voltage Range |
2.5V~63V |
|
Working Temperature |
-55℃~125℃ |
|
Tolerance |
±10%, ±20% |
|
Certificate |
RoHS, REACH |
|
Applications |
Automotive industry, portable electronics, medical devices, telecommunications, aerospace industry, security sectors |
Characteristics
Ultra low ESR and high capacitance density: ESR values range from 1~30mΩ at 120 kHz/25°C, about 10~100 times lower than traditional MnO₂ tantalum capacitors. ESR remains stable from medium-to-high frequencies (up to 5 MHz) and the full operating temperature range. Keep relatively higher capacitance per unit volume.
High RMS Ripple Current Handling: The low ESR eliminates excessive heat generation and supports continuous high-current operation in DC-DC converters and power rails.
2~5 times higher ripple current ratings than equivalent MnO₂ tantalum capacitors.
Stable Capacitance & ESR: Minimum capacitance changes and ESR variation on voltage, temperature and lifespan. No significant performance degradation after thermal cycling or long-time use.
Production Process
Parts of Our Production Facilities
FAQ
Q1: Is it true that a polymer tantalum capacitor never burns?
A1: They have much safer failure modes (typically open circuit or high resistance short) and are not prone to thermal runaway like MnO₂, so they have much lower risks of burning. But they will be still overheated in some extreme conditions.
Q2: If a polymer tantalum capacitor still need derating on voltage?
A2: Although a polymer tantalum capacitor has a low risk of burning, however, derating is still absolutely critical for long-term reliability. Always follow the manufacturers' surge and voltage derating guidelines (normally 50% or 70% of the rated voltages).
Q3: What may be the main causes of a failure on a polymer tantalum capacitors?
A3: The following causes may lead to a failure.
1. Voltage surges/spikes exceeding the capacitor's surge rating.
2. Excessive ripple current beyond specification, causing overheat.
3. Reverse voltage or excessive AC voltage component.
4. Mechanical or thermal stress during assembly (e.g., violent pick-and-place, reflow issues).
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