M39003/09-2078/TR

Tantalum capacitors, typically referred to as ‘tantalum (polymer) electrolytic capacitors’ are available in a variety of package sizes, shapes, and capacitance ranges. M39003/09-2078/TR is one of the surface mount version of tantalum capacitors available in the market. Let us understand its application field and working principle.

Working Principle

The tantalum capacitors are based on the principle of electrochemical double layer capacitance which is similar to the working principle of other electrolytic capacitors. They consist of two metallic layers separated by an insulating layer or dielectric material. This dielectric material is a solid bi-polar electrolytic material, which is generally made of a thin layer of tantalum pentoxide between two electrodes. The anode side is made of tantalum metal while the cathode is made of sintered anode, a carbon based material. This combination forms an electrochemical capacitor.

The anode and cathode materials are connected externally to the circuit. When a current is supplied, the tantalum reacts with the electrolyte, forming a double layer of an anode oxide layer on the anode side and a cathode oxide layer on the cathode side of the dielectric. This forms a latent electrical storage unit which can store energy for a considerable period of time.

Application Field

M39003/09-2078/TR are surface-mount, 90 VDC devices and are available in a variety of size, shapes, and capacitance ranges. They are mainly used in high-frequency power supply and signal line DC-DC converters. M39003/09-2078/TR are reliable power filters for digital circuits and switching circuits. They are also suitable for RF Circuits, TV receivers, and automotive applications.

The Operating Temperature Range for these capacitors is -55°C to +125°C which provides an extended life and high stability. These capacitors also offer very low ESR or Equivalent Series Resistance, which enables them to provide high-current handling capabilities.

M39003/09-2078/TR have high energy density, Low Profile, and high SRF or Self-Resonant Frequency. The combination of these three makes them ideal for high-frequency and high-temperature applications. They are widely used in various applications, such as automotive electronics, computer peripherals, home appliances, and more.

In summary, M39003/09-2078/TR are highly reliable and versatile tantalum capacitors which can be used for various applications, such as automotive electronics, computer peripherals, home appliances, and more. They have a high energy density along with low ESR and SRF, making them ideal for high-frequency and high-temperature applications.