M39003/09-0370

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Tantalum capacitors are electronic components used to store electrical energy, maintain signal levels and provide time delays. They are polarizedcapacitors with an anode of tantalum metal and an electrolyte of either wet tantalum oxide or solid manganese dioxide.The M39003/09-0370 is a popular type of tantalum capacitor. It is a miniature hermetic general-purpose capacitor, which is available in an axial and radial-leaded version. It is a surface-mountable, high-temperature, reflowable device that is suitable for high-reliability applications.The M39003/09-0370 has a solid tantalum anode, with an anode-to-cathode conductivity of greater than 9 microamperes (uA). This high level of conductivity allows the capacitor to be used in a range of applications, such as power supplies, motor drives, radio frequency applications, telephone electronics and instrumentation.The M39003/09-0370 tantalum capacitor is rated for use up to a maximum voltage of 16V DC. It features an operating temperature range of -55°C to +125°C and a maximum ripple current capacity of 4A (with proper derating). The part is RoHS compliant and is hermetically sealed for environmental protection.The operating principle of a tantalum capacitor is based on its ability to store electrical charge on the surface of the tantalum material. The anode of the capacitor is made of tantalum metal, which is an electrometallic material, and its cathode is made of an electrolyte material such as tantalum oxide or manganese dioxide.When voltage is applied to the capacitor, a thin layer of ions from the electrolyte material is deposited onto the anode, creating an internal electric field. The internal field then causes the ions to act like a charged capacitor plate, storing energy in the form of electrical charge.When the capacitor is used in a circuit, the resulting electric field creates a current that flows between the anode and cathode, which allows the capacitor to store and discharge electrical energy. When a negative voltage is applied to the anode, these ions are drawn in the direction of the applied voltage, counteracting the positive charge stored in the capacitor. This creates a discharge as the stored electric charge is removed.As such, the M39003/09-0370 tantalum capacitor is ideal for applications where energy is stored and then later released in a regular cycle, such as in power supplies and motor drives. The high ripple current capacity and operating temperature range also make the part suitable for high-reliability applications.

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