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TDK - New DC link capacitors provide exceptionally low ESL

Technology Cover
Post Date: 2021-06-23, TDK Corporation

TDK offers a series of new EPCOS power capacitors for DC link applications. The rated voltage of the new capacitor is 700VDC to 2000VDC, and the capacitance range is 20μF to 270μF. The current handling capacity can be as high as 60A at 65C, and can withstand current peaks up to 7.5kA. The maximum allowable hot spot temperature is 85C.

The ESL value of the capacitor is particularly low, as low as 13nH, depending on the type. Because of this and the lowest ESR value. The 0.9mOhm capacitors of the B2563xE* series are very suitable for inverter solutions with fast switching power supply modules. Even at a high switching frequency of 100kHz, the low ESR value can remain stable, and the low parasitic coefficient can prevent significant voltage overshoot even when large currents are turned off.

The plastic cylindrical case of the capacitor complies with UL 94 V0. Two connection types are provided: M8 threaded bolts or M5 threaded holes.

Typical applications include fast switching converters and inverters for photovoltaic systems, traction and induction heating systems in railway technology.

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