Tantalums combine capacitance of 1500 µF with ESRs of 13 mOhm

23 April 2003 Passive Components Infrastructure

A new series of solid tantalum chip capacitors from Vishay Intertechnology features new 'E' and 'R' case sizes, as well as ultra-low equivalent series resistance (ESR) and high capacitance values. The company says that these Vishay Sprague conformal-coated 597D multi-anode capacitors provide increased reliability and improved reception in DC-to-DC conversion, line cards, mother boards, and power supply applications in end products including test equipment, PCs, and base stations.

The devices' ultra-low maximum ESR values range from 13 mΩ to 35 mΩ at +25°C and 100 kHz. Capacitance values range from 330 to 1500 µF with standard tolerances of ±10% and ±20%, and working voltage ranges from 4 to 10 V d.c. Maximum current leakage ranges from 27 to 68 µA, and the maximum dissipation factor is 6% at +25°C and 120 Hz.

Capacitors in the E case size measure 7,3 by 4,3 mm, with a 4,0-mm height profile. The R case measures 7,3 by 6,0 mm with a 3,6-mm height profile. The 597D capacitors feature an operating temperature of -55 to +85°C, up to +125°C with voltage derating.

These Vishay Sprague devices, the latest addition to the TANTAMOUNT product line, may be used singly in some applications to replace several lower-value capacitors in a small footprint, thereby decreasing component density and increasing PCB space. Their conformal-coated construction, which features two standard 100% tin terminations, offers a cost-efficient alternative to multi-anode moulded capacitors and provides lower high-frequency inductance than moulded equivalent types.

For more information see www.vishay.com

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