Advanced passive components giant AVX Corporation has expanded its TPM series to include D and low profile Y case size multi-anode 'mirror' configuration tantalum capacitors. Aimed at telecommunication infrastructure, networking, servers, and military and aerospace applications, the TPM mirror tantalum capacitor delivers low self-inductance (ESL) and lower equivalent series resistance (ESR) in a small package. The new symmetrical design reduces the ESL to 1 nH, half that of standard D case sized devices.

Low ESL enables a higher resonant frequency up to 500 kHz (mirror D case), delivering more efficient filtering in DC-DC converters. The new design also reduces the height of the tantalum capacitors from 4.3 mm (E case) to 3.1 mm (D case) with further reductions down to 2.0 mm maximum height (Y case).

The mirror anode configuration also enhances thermal power dissipation, enabling a higher ripple current to be achieved using only one capacitor. This allows a reduction in the number of capacitors, providing a downsizing of the power supply without compromising the output current ratings.

Complying with RoHS requirements, TPM capacitors are designed for 3x reflow, 260 °C peak temperature lead-free assembly systems, and feature an operating temperature range of between –55 °C and +125 °C.

Mirror TPM capacitors released in D case size offer a capacitance range of 220 to 1000 μF at 2.5 to 10 V and have an ESR range of 25-35 mW. Higher voltage (up to 35 and 50 V) devices under development will be especially attractive for telecommunication applications where design height is becoming an important parameter: capacitance values 10-22 μF, ESR 65-140 mW on a single 35-50 V capacitor are difficult to attain within the 3.1 mm maximum height using any other technology, said AVX.

Samples of even lower profile 2.0mm Y case 220 mF 6.3 V with ESR 35 mW are available upon request, according to AVX. Typical pricing for the TPM mirror tantalum capacitor starts at $2.00 each in quantities of 1000 pieces with delivery from stock to 14 weeks.

www.avx.com