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Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitor that use a tantalum oxide as the dielectric layer for the capacitor. They are very similar to the aluminum electrolytic, with the main difference being the tantalum oxide’s higher dielectric constant. Tantalum capacitors have a higher capacitance and voltage rating than aluminum electrolytic capacitors.

TPSD226K035P0400 Application Field and Working Principle

The TPSD226K035P0400 is a miniature surface mount Tantalum Capacitor with a working voltage of 35 VDC. It has a case size of 2.2mm × 3.4mm, making it ideal for high-density applications. It is designed for use in high-temperature, high-performance circuits such as timing circuits and pulse shapers. The Oxford Instruments TPSD series consists of surface mount, polymer-electrolyte-dielectric energy storage capacitors.

The TPSD226K035P0400 is designed with the Oxford Instruments patented PORWIN technology, which enables higher operating temperatures and more reliable performance over the temperature range of -55ºC to +125ºC. The tantalum capacitors use a Tantalum Oxide layer and a gold anode, separated by a dielectric layer of Polypropylene-based (oil) material. This combination offers low equivalent series resistance (ESR), high capacitance, and low leakage.

The tantalum capacitor has a polarized construction, meaning the anode and cathode are clearly marked and must be connected to the circuit in the correct orientation. Failure to do this will result in the capacitor not working and possibly being damaged. When the capacitor is not connected to a voltage, its capacitance is almost constant. However, when an AC voltage is applied to the leads, the capacitance can decrease. This effect is known as dielectric absorption.

The TPSD226K035P0400 is generally used for power filtering, decoupling, bypassing, and timing circuits. It is also suitable for temperature compensation, sample and hold applications, noise reduction, and power supply for stable power in communication systems such as GSM and PCS.

Summary

Tantalum capacitors are a type of electrolytic capacitor that use a tantalum oxide as the dielectric layer for the capacitor. They have a higher capacitance and voltage rating than aluminum electrolytic capacitors. The TPSD226K035P0400 is a miniature surface mount Tantalum Capacitor with a working voltage of 35 VDC. It is designed for use in high-temperature, high-performance circuits such as timing circuits and pulse shapers. It is generally used for power filtering, decoupling, bypassing, and timing circuits. It is also suitable for temperature compensation, sample and hold applications, noise reduction, and power supply for stable power in communication systems such as GSM and PCS.

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