DC Link Capacitors Suitable for Extreme Environmental Conditions

DC Link Capacitors Suitable for Extreme Environmental Conditions

TDK Corporation  has extended its portfolio of EPCOS film capacitors for DC link applications with the new B3277*M series. The new types are suitable for extreme environmental conditions—as has been proven by a THB test (temperature, humidity, bias) at 85°C, 85% relative humidity with a rated voltage applied for 1000 hours, says the company.


The capacitors are designed for rated voltages between 450 and 1600 V dc. They offer capacitance values between 0.33 and 120 µF, and maximum operating temperature of these RoHS-compatible components is 105°C. Depending on the voltage and capacitance, the lead spacings are 27.5, 37.5, and 52.5 mm. A two- or four-pin version is available for each lead spacing. The service life of the self-healing capacitors is 50,000 hours at the rated voltage and an operating temperature of 85°C.


Typical applications include dc links of converters for photovoltaic plants, as well as frequency converters and power supplies for industrial applications. The series is qualified in accordance with AEC-Q200.


Main applications

  • DC links of converters for photovoltaic plants

  • Frequency converters and power supplies for industrial electronics applications

Main features and benefits


  • Successful completion of THB tests at 85°C, 85% relative humidity, and an applied rated voltage for 1000 hours.

  • Wide voltage range of 450 to 1600 V dc

  • Wide capacitance range of 0.33 to 120 µFRoHS-compatible

Further information on the devices can be found here.






 
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