M39003/01-2657/TR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Tantalum capacitors, also known as solid electrolytic capacitors, are electrolytic capacitors in which a tantalum powder is used as the anode and an oxide film, called mansam, is used as the dielectric. Certain advantages such as high volumetric efficiency, low leakage current, and low ESR made tantalum capacitors popular in various fields. One of its improved models is the M39003/01-2657/TR type tantalum capacitor. This article will first discuss the application fields of this type capacitor, then explain its working principle.

M39003/01-2657/TR tantalum capacitors are primarily used in aircraft and military applications. The mechanical and electrical properties of this type capacitor makes it suitable for use in conditions where space is limited and reliability is required. In aircraft-grade electrical equipment, this capacitor is used to filter low-level RF signals and prevent them from entering sensitive circuitry for better signal to noise ratio. As for military-use electric devices, M39003/01-2657/TR is often put in place due to its capability to withstand extreme temperatures and keep functioning.

The working principle of this type tantalum capacitor is similar to other electrolytic capacitors. Its working is related to the oxidation reaction of the anode. When the capacitor is powered on, the anode will be oxidized and a thin oxidation film—the mansam—will be formed on the surface of the anode. The mansam works as the dielectric medium and provides electrical insulation between the anode and cathode. When the capacitor is under reverse bias, the mansam will enlarge and form a kind of barrier to the current flow. This adds capacitance, which is also known as "reverse recovery". Inversely, when the capacitor is forward biased, the mansam will become thinner, allowing bigger current to pass through and resulting in a lower capacitance. Thus the capacitance of M39003/01-2657/TR type tantalum capacitor can be modified by controlling the bidirectional bias voltage.

Furthermore, the capacitance of the M39003/01-2657/TR type tantalum capacitor is characterized by its peaks and valleys, which are known as "ripples". In order to increase capacitance, the ripple voltage must be reduced. Since the ripple voltage is directly affected by the ESR and ESL (inductance) values, knowing the ESR and ESL values of the tantalum capacitor is important to control its capacitance. The low ESR values are typically provided by the use of a sintered anode made of Tantalum powder, while the ESL values can be reduced by adding the appropriate ancillary components.

To sum up, the M39003/01-2657/TR type tantalum capacitor is a reliable type of capacitor often used in aircraft and military applications. Compared with other types of capacitors, this type of tantalum capacitor has much better performance in voltage regulation and frequency response. Its good performance is achieved by controlling the bidirectional bias voltage. The capacitance can be further improved by reducing the ripple voltage, which is related to the ESR and ESL values of the capacitor.

The specific data is subject to PDF, and the above content is for reference