AC filter capacitors withstand high temperatures

The Epcos B32754 to B32758 series of AC filter capacitors now extends to cover voltages from 250 to 400V AC and offer capacitances of between one and 70-microF. The capacitors from TDK comply with IEC 61071: 2007 and are extremely robust, even at high humidity, says the company, verified in a temperature, humidity, bias (THB) test at 60 degree C, 95 per cent relative humidity and an applied rated voltage for 1344 hours, corresponding to 56 days, in according to IEC 60384 14:2013/AMD1:2016 Grade 3 Test A.

The capacitors are designed for a maximum operating temperature of 105 degree C, and their epoxy resin-filled case conforms to UL 94 V-0. Depending on capacitance and rated voltage, the lead spacing is 27.5, 37.5 or 52.5mm.

They are suitable for demanding applications in industrial electronics, including output filtering for power supplies, frequency converters for drives and renewable energy, or uninterruptible power supply systems.

TDK was established in 1935 to commercialise ferrite, a key material in electronic and magnetic products. The company’s comprehensive portfolio features passive components such as ceramic, aluminium electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The company also supplies sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies, energy devices and magnetic heads. The company’s brand names are TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK addresses demanding markets in information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America.

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