AVX has developed an SMD solid tantalum capacitor that delivers 1000 hours of continuous operation at 200°C with derating. Designated the THJ 200C SMD series, the capacitor is based on a unique design, distinct manufacturing processes and special ageing techniques, which guarantees high-temperature performance for a variety of harsh environment applications, such as oil and gas drilling, aerospace, defence and automotive.
The capacitors are initially available in two E-case sizes: E 220 μF rated at 10 V for 3 V rail application at 200°C and E 100 μF rated at 16 V for 5 V rail application at 200°C. They feature a small surface mount package that lends itself to fast pick-and-place assembly techniques and a negative temperature coefficient that ensures no localised heating occurs in the capacitor, thus avoiding thermal runaway and ultimately destruction or operational degradation of the device.
Gold plated termination for hybrid assembly is provided as conventional tin/tin-lead finished terminations have melting points that are too low for reliable operation at 200°C. Long operating life is also a key attribute, as the capacitor features a leakage current of less than 1 mA after 1000 hours of operation at 200°C. All THJ 200°C capacitors are designed to withstand a 3x reflow soldering process at 260°C and are RoHS compatible.
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