M39003/01-2746H

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Tantalum capacitors are non-polarized, small, electrolytic capacitors created from the combination of tantalum metal and a dielectric layer of oxide. The M39003/01-2746H is an axial-lead device that is made from molded cases and comprises a manganese dioxide electrolyte. It is used for applications that require a low profile design with a maximum volumetric size.

Applications

The M39003/01-2746H can be found in a variety of applications, particularly in electronic circuits where short-time pulse operation is required. This includes timers, mixers and military electronics. These capacitors offer high capacitance over a wide frequency range and are suitable for voltage ripple elimination. The device is important to power supply and decoupling applications as it has a low impedance value. It is also useful in applications involving audio or video circuitry, such as amplifiers, oscillators and subwoofers.

Working Principle

The M39003/01-2746H has its primary applications in power supplies where low-inductance, high capacitance is a necessity. It is designed to be hermetically sealed, making it highly reliable under performing in adverse environments and has high-temperature and voltage rating at 105°C and 4-7V, respectively. The electrical conductivity of the manganese dioxide electrolyte is the cause for the capacitor’s low temperature and voltage ratings.

When the device is in an applied electric field, the dielectric layer of the capacitor becomes conductive. This, in turn, creates an electrolyte bridge across the plates, and charges ions are allowed to flow from one plate to the other. As a result, electrons are brought onto the plates, which helps to reduce capacitance and shift it to a lower frequency.

In addition, the dielectric layer is also used as a coupling to block DC currents and allow only AC frequencies to pass through the capacitor’s plates. This particular design helps to prevent power leakage and helps retention of charge. The power dissipation factor of the M39003/01-2746H is low and can help to reduce power consumption and heat dissipation in applications that require high-volume capacitance.

Conclusion

The M39003/01-2746H is designed for a variety of applications, primarily in power supplies and audio video circuitry. It is highly reliable and efficient in power retention owing to its low temperature and voltage rating and hermetically sealed design. It also exhibits high capacitance over a wide frequency range, making it suitable for use in a variety of electric field applications.

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