M39003/09-3021/PR

Lifetime @ Temp.:	--
Failure Rate:	C (0.01%)
Features:	Military
Ratings:	--
Manufacturer Size Code:	D
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.351" Dia x 0.786" L (8.92mm x 19.96mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Series:	Military, MIL-PRF-39003/9, CSR21
Operating Temperature:	-55°C ~ 125°C
ESR (Equivalent Series Resistance):	--
Type:	Hermetically Sealed
Voltage - Rated:	10V
Tolerance:	±10%
Capacitance:	220µF
Lead Free Status / RoHS Status:	--
Part Status:	Active

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Tantalum Capacitors:M39003/09-3021/PR Application Field and Working Principle

Tantalum capacitors are a type of electrolytic capacitors. This article will discuss the application field and working principle of the M39003/09-3021/PR model of tantalum capacitor.Tantalum capacitors are mostly used in electronics circuits, especially in aerospace and military applications. The M39003/09-3021/PR is an industrially-rated tantalum capacitor. It is a polarized capacitor with a maximum capacitance of 30μF and operating temperature range of -55℃ to +125℃. This capacitor is widely used in consumer electronics such as cameras and cell phones.The M39003/09-3021/PR model has a molded case with two electrical contacts. One contact is marked with a stripe which serves as the negative terminal, also referred to as the anode. The other contact serves as the positive terminal, also referred to as the cathode. Inside the case, this capacitor is filled with an electrolyte, such as a potassium hydroxide solution. It also contains a thin tantalum foil which acts as a dielectric material.The working principle of the M39003/09-3021/PR capacitor is based on the principle of electro-deposition. When a current flows through the capacitor, the electrolyte solution is reduced and deposited on the surface of the cathode as an oxide film. This oxide film becomes the dielectric material between the anode and the cathode which provides electric insulation.The oxide film formed on the cathode also acts as a charge storage medium. When the capacitor is receiving a steady, direct current, the oxide film acts as a resistor and limits the current flow. When a voltage is applied across the terminals, the current flow increases, and the oxide film is further reduced to form a thicker oxide layer which increases the capacitance of the capacitor. When the voltage is reversed, the oxide film is reduced and the stored electric charge is released.In conclusion, the M39003/09-3021/PR model of tantalum capacitor is a common electrochemical capacitor and is suitable for frequency range from DC to 10MHz. The capacitor is used in wide range of electronic applications and the working principle is based on the principle of electro-deposition. The capacitor is also characterized by a high capacitance and a low ESR.

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