Kyocera AVX Expands Its Line of Wet Tantalum Capacitors
Kyocera AVX in February added a new 470 µF/125V code to its TWA-Y series, COTS-Plus line of high-temperature, long-living capacitors.
Kyocera AVX, a global manufacturer of electronic components, develops a wide variety of capacitors for use in a range of different applications. The newest addition to its TWA-Y series, the 470 µF, adds yet another reliable wet tantalum capacitor offering high capacitance and voltage value (CV/cc) at 200 °C.
The new capacitor sports a capacitance of, naturally, 470 µF, and is available at different voltages with different case sizes.
Per the TWA-Y series datasheet, this 470 µF capacitor is available with a DLA casing, as is the case with the rest of the TWA-Y series. The DLA package comes in four sizes, from T1 to T4. The T1 is not for use with the 470 µF/125 V code, while the T2 and T3 case sizes are equipped at 30 V and 85 °C. The DLA T4 is rated for 75, 100 and 125 V at 85 °C.
Kyocera AVX's TWA-Y series capacitors. Image used courtesy of Kyocera AVX
The TWA-Y series has an extended temperature rating of between -55 °C and +200 °C. At 200 °C, the series’ capacitors can reliably operate for up to 2,000 hours with applicable derating.
Their rated voltage versus their temperature characteristics demonstrates a high-rated range area. Voltage is up to 100% at 85 °C, up to 67% at 125 °C, and up to 60% at 200 °C.
Replacing M39006 Capacitors
Generally, wet tantalum capacitors can withstand high ripple currents, high bulk capacitance, and low equivalent series resistance.
In addition to these characteristics, The TWA-Y series adds high mechanical strength. The series has passed MIL-PRF-39006 rating tests, and therefore its capacitors can function as replacements for M39006-style capacitors.
M39006 capacitors’ voltage ranges are between 6 and 100 V at a maximum rated temperature of 125 °C. As such, for temperatures approaching 200 °C, the TWA-Y series’ capacitors make for an appealing replacement.
Applications for the TWA-Y series
TWA-Y series capacitors are specced to operate under rough conditions. The series was mechanically tested under MIL-STD-202 with two methods, method 204 test condition “D,” and method 213 test condition “I.” This testing demonstrates the capacitors’ competence for use in applications where mechanical shocks and high-frequency vibrations are of primary concern.
Some such applications include:
- Energy storage
- Input and output filtering
- Down-hole oil drilling