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Tantalum Capacitors

Tantalum capacitors are solid electrolytic capacitors which use a variety of tantalum oxyhalide compounds as the dielectric material. Tantalum capacitors offer a combination of low ESR, high capacitance and volume density, and temperature stability for use in semiconductor, medical, and aerospace applications. The use of tantalum capacitors is especially favorable in demanding, lightweight applications, for example in aerospace, due to their light weight and stability under extreme temperature conditions.

M39003/09-3017/TR capacitors are one of the most commonly used type of tantalum capacitors, with a tantalum anode, and a solid manganese dioxide cathode. In order to operate these capacitors, a direct current (DC) voltage must be applied across the terminals. This voltage causes an electric current to flow through the oxide layer, forming a conducting film on the electrodes.

The typical application fields for the M39003/09-3017/TR series are decoupling and filtering capacitors. They are typically used for high power density, high capacitance, and low leakage current applications.

When using the M39003/09-3017/TR in a decoupling circuit, the capacitor acts as a low pass filter, allowing high frequency signals to pass, while blocking low frequency signals. In this application, the capacitor is placed between the power supply and the load. This helps reduce noise and ripple in the system, while improving the level of signal integrity.

The M39003/09-3017/TR series is also widely used in power supply filters, EMI/RFI suppression, switching power supply applications, and for power supply regulation. These capacitors can be combined with other components, such as inductors and resistors, to form a power supply filter. In this configuration, the capacitor acts as a high pass filter, allowing only high frequency signals to pass, while blocking low frequency signals, which could cause interference.

The working principle of the M39003/09-3017/TR series is quite simple. When a DC voltage is applied to the capacitor, an electric current flows through the tantalum anode, forming a layer of conductive tantalum oxide on the anode. This layer acts as a dielectric material, allowing only AC signals to pass.

In addition to its use in decoupling and filtering applications, the M39003/09-3017/TR series is also used in medical, aerospace, and military applications. Its superior temperature stability allows it to operate in extreme temperature environments. They are stable under high temperature and vibration conditions, making them well suited for long-term, high-temperature applications.

Tantalum capacitors are an essential and versatile component in today\'s electronics. The M39003/09-3017/TR series offers high capacitance, power density, and temperature stability, making it an ideal choice for a wide variety of applications. Its ability to block low frequency signals while allowing high frequency signals to pass make it a suitable for decoupling and filtering applications in a variety of industries.

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