SMD fused capacitors suit space-limited applications

9th December 2014
Barney Scott

AVX has released a series of fused high CV tantalum SMD chip capacitors with undertab terminations. The F98-AS1 series capacitors feature a proprietary lead-frame-less structure with precise dimensions and low stress packaging, an internal thin film fuse that protects against short circuits, and well-established undertab termination technology, which enables high volumetric efficiency and high PCB assembly density.

Currently available in a 0805 (2012 metric) S case with ratings of 22μF/10V, 33μF/10V, 10μF/16V and 1μF/35V and a 0.9mm maximum height, the F98-AS1 series is the smallest and thinnest SMD fused tantalum product currently available.

As such, the series is suitable for use in a wide variety of applications in which safety and size are a primary concern, including automotive, commercial, industrial, and medical applications, and the I/O lines of small power supply circuits, portable gaming devices, and smartphones.

The lead-free, RoHS compliant capacitors are rated at 85°C, and designed for use in temperatures spanning -55 to +125°C. Series extensions currently in development include a 0805 (2012 metric) case 47μF/10V capacitor and 10 capacitors packaged in 0603 (1608 metric) M cases: a 1μF/25V component, a 1μF/20V component, 10V components rated for 2.2, 4.7, 10, 22 and 33μF, and 16V components rated for 1, 2.2 and 4.7μF.

“The F98-AS1 series fused undertab tantalum capacitors provide fail-safe high CV performance in a broad range of applications for which safety and size are primary concerns,” said Tomas Zednicek, Technical Marketing Manager, AVX. “Samples of the series received an enthusiastic reception from customers and, thanks to their input, several series extensions, including a higher capacitance 0805 part and numerous 0603 parts, are already in development.”

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