M39003/09-0251/TR

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Tantalum capacitors are one of the most common types of capacitor available today. The M39003/09-0251/TR capacitor, a surface mount, voltage-variable, non-polarized device, belongs to this family. It has some distinct advantages over other capacitor types, lending it to a range of specialized applications in modern electronics.

Features and Specifications

The M39003/09-0251/TR capacitor offers an operating voltage range of 6.3 to 43 VDC, an effective capacitance range of 0.22 to 0.905 microfarads, and a rated ripple current range of 3900 to 9000 mA. It also features an extended temperature range of -55 to 150°C and a temperature coefficient of -30, meaning it can keep a relatively steady capacitance with varying temperatures. Other features include excellent moisture resistance and long life.

This capacitor uses a metallic fi lm that can be coated with either an organic or an inorganic dielectric. It also features metallized endcaps that serve as both the anode and cathode, eliminating the need for polarity in design; hence, it can be used in any orientation. The structure of the device, along with its design, leads to wide variation of capacitance that is typically not found in other types of capacitors.

Application Field and Working Principle

Due to its unique features, the M39003/09-0251/TR capacitor is particularly useful for applications that demand stable potential, a high pulse current, and occasional high frequency signals and low ESR levels. Examples of its use include portable or handheld electronic devices such as mobile phones, digital cameras, PDAs, GPS devices, and MP3 players, where the compact size gives it the advantage in space-constrained applications. It is also used in low-voltage power supplies, remote power systems, and automated meter reading systems.

The working principle of this capacitor is based on the property of dielectrics being superior conductors of electrical charge. As the two metallized endcaps are subjected to a voltage, a field of electrostatic force is created between the two, which draws the charges into the dielectric. This causes the capacitor to store electrical energy in the form of static charge and will remain until the power to the device is turned off or a new field of force is created. This phenomenon is known as capacitance, and different capacitors can store different levels of electrical energy depending on the nature and thickness of the dielectric material used.

In Summary

The M39003/09-0251/TR capacitor is a popular choice for low-voltage applications due to its compact size, high pulse current rating, and wide capacitance range. It also features good moisture resistance and extended temperature range along with an excellent temperature coefficient. The unique design of the device gives it a special advantage in wide variation of capacitance, which is something that is not found in other types of capacitors. Its versatility makes it suitable for a range of specialized applications including handheld and mobile devices, low-voltage power supplies, and remote power systems.

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