AVX capacitors operate at high temperatures
AVX
THJ 200C SMD tantalum capacitor
The THJ 200C SMD tantalum capacitor from AVX delivers 1,000 hours continuous operation at 200C with derating.
These capacitors are said to guarantee high-temperature performance for a variety of harsh applications such as oil drilling, aerospace/defence and automotive.
The capacitors are initially available in two E-case sizes: E 220TF rated at 10V for 3V rail applications at 200C; and E 100FF rated at 16V for 5V rail applications at 200C.
Key features of the THJ 200C SMD tantalum capacitors include 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, avoiding thermal runaway and destruction or operational degradation of the device.
Gold-plated termination for hybrid assembly is provided as conventional tin/tin-lead finished terminations with melting points that are too low for reliable operation at 200C.
Long life is also a key attribute with leakage current after 1,000 hours operation at 200C is still less than 1mA.
All THJ 200C capacitors are designed to withstand a 3x reflow soldering process at 260C and are RoHS compatible.
In oil and gas applications, the THJ 200C SMD tantalum capacitors are suitable for use in DC/DC converters found in drilling heads that are subjected to rising ambient temperature with depth.
Enabling companies to enhance their usage of electronics up to higher temperatures leads to higher profit as deeper situated commodities are more easily and cheaply accessed.
In these applications, the 16V capacitor is suitable for e5V analogue circuits, while the 10V capacitor is used for 2.5V and 3.3V digital circuits.
Typical aerospace and defence applications include high-temperature engine and turbo fan control as well as control and sensing electronics placed near the outer shells of rockets and space shuttles.
Automotive applications require reliability and long life at elevated temperature levels.
High-capacitance devices rated at 16V are suitable for use in a variety of mechanisms such as in the latest generation of smaller gearboxes and embedded alternators.
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