TDK EPCOS B3277*H series DC link capacitors

TDK has extended its range of EPCOS film capacitors for DC link applications, with the B3277*H series now covering particularly harsh environmental conditions. The robustness has been verified in a temperature, humidity, bias (THB) test at 60°C, 95% relative humidity and rated voltage for 1000 h. Special types are also available that are THB tested at 85°C, 85% relative humidity and rated voltage for 1000 h.

The capacitors are designed for rated voltages of between 450 and 1100 VDC and offer capacitance values of between 1.5 and 120 µF. The maximum operating temperature of the RoHS-compatible components is 105°C. Depending on voltage and capacitance, the lead spacing is 27.5, 37.5 or 52.5 mm. The types with the latter grid size are offered exclusively in a 4-pin version. At the rated voltage and an operating temperature of 85°C, the service life of the self-healing capacitors is 50,000 h.

Applications include the DC link circuits of converters for photovoltaic systems, frequency converters and power supplies for industrial applications. AEC-Q200 qualified capacitors are also available on request.