Low-ESR polymer capacitors increase volumetric efficiency

Multi-anode, polymer, surface-mount chip capacitors make up the T59 vPolyTan series from Vishay Interechnology. They deliver increased volumetric efficiency for computing, telecomms, and industrial applications, says the company.

They combine polymer tantalum technology with the company’s patented multi-array packaging (MAP), and are claimed to deliver the industry’s highest capacitance density while maintaining best-in-class ESR.

Available in the molded EE (7343-43) case code, the capacitors offer up to 25 per cent better volumetric efficiency than similar devices, which allows for higher capacitance and voltage ratings. For example, capacitance of 150 microF at 30V is three times higher in capacitance than the closest competing device. According to the company, the packaging of the T59 series ensures ultra-low ESR from 25 to 150mOhm at +25 degree C and 100kHz.

The devices offer capacitance from 15 to 470microF, with capacitance tolerance of ± 20 per cent, and over-voltage ratings up to 75V. By replacing multiple lower-capacitance devices, T59 series capacitors reduce component counts to save PCB space and lower costs in solid-state drives, networking equipment, and motherboards, says the company, were they can be used for decoupling, smoothing, filtering, and energy storage applications.

The capacitors feature ripple current from 1.3 to 3.1A at 100kHz and an operating temperature range of -55  to +105 degree C. They are RoHS-compliant, halogen-free, and offer both lead (Pb)-free and tin/lead (Sn/Pb) wraparound terminations. They are available in tape-and-reel packaging to EIA-481.



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