Capacitors keep it green at high temperatures

A new series of high-temperature environmentally friendly polymer tantalum chip capacitors from Kemet is designed for use in power management applications.

A new series of high-temperature environmentally friendly polymer tantalum chip capacitors from Kemet is designed for use in power management applications.

The new SMT multilayer ceramic capacitors offer the same low ESR and improved capacitance retention at high frequencies as the popular T520 KO-CAP series, which also features a number of new additions.

The new Kemet T525 SMT tantalum capacitors offer a stable option in applications where temperature extremes may exist, and possess an operating temperature range of -55 to +125C.

Ideal for use in onboard power supplies, the T525 series is available at 47-470uF across 4-16V and offers excellent surge current performance and long-term reliability.

There is only a 20% derating of application voltage up to 85C throughout the series.

Above 85C, the recommended capacitor voltage rating drops to 0.8 times rated voltage at 105C, and 0.67 times rated voltage at 125C, as per EIA guidelines.

Moulded in black epoxy to minimise discolouration in high temperatures, the T525 series will be offered in the same EIA industry standard case sizes and packaging formats as Kemet's tantalum surface-mount capacitor lines.

In addition, the T520 series has seen the introduction of five new part numbers and two ultra low ESR (18 and 25mohm) models under C-spec 4320.

The new components increase the T520 range of capacitance and voltage ratings to 33-470uF and 3-16V, respectively.

Both the T525 and T520 series are environmentally friendly, being free of lead and brominated flame retardant, and feature a benign failure mode.

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