Series:	Military, MIL-PRF-39003/3, CSR23
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	47µF
Tolerance:	±20%
Voltage - Rated:	10V
Type:	Hermetically Sealed
ESR (Equivalent Series Resistance):	--
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	--
Mounting Type:	Through Hole
Package / Case:	Axial
Size / Dimension:	0.185" Dia x 0.474" L (4.70mm x 12.04mm)
Height - Seated (Max):	--
Lead Spacing:	--
Manufacturer Size Code:	B
Features:	Military
Failure Rate:	C (0.01%)

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Tantalum Capacitors

M39003/03-3020H Application Field and Working Principle

Tantalum capacitors, also called Ta-capacitors, are one of the most common electrochemical capacitors are used in almost every circuit board in electronic circuits. The M39003/03-3020H tantalum capacitor is an one such example, designed for use in military and aerospace industries. Being a surface-mount device, it offers a smaller profile which is very suitable for space application. The specific capacitor is also found in many other applications including telecommunication, analog and digital signal transmissions, and automotive circuitry.The M39003/03-3020H tantalum capacitor comprises of an anode case, an electrolytic solution and a dielectric layer. The anode case, which is usually made of nickel-plated metal, functions as the negative terminal of the electrolytic solution. This electrolytic solution is contained in a metallized paper or other electrically insulating material. Inside the anode case, there is a very thin layer of an electrically insulating material which serves as the dielectric layer. The dielectric layer is made of either tantalum oxide or tantalum pentoxide.The efficiency of the M39003/03-3020H tantalum capacitor depends on the voltage and capacitance. Generally, the capacitance is defined by a three-digit code, with the lower two digits representing the capacity in picofarads and the third digit representing the number of zeros following the last two. The voltage rating of the capacitor defines the maximum voltage it can withstand before failing to act as a capacitor.The working principle of the M39003/03-3020H tantalum capacitor is based on the electrochemical nature of tantalum. When a voltage is applied across the anode-cathode interface of the capacitor, the anode is positively charged. This positive charge draws in the negative ions from the electrolytic solution. The resulting buildup of positive charge reduces the capacitance across the anode-cathode interface. This acts to store electrical charge which can be discharged as required. When the applied voltage exceeds the rated value of the capacitor, the insufficient negative ions in the electrolytic solution will be exhausted and the capacitance will no longer be able to store the electrical charge. This will essentially cause the capacitor to fail.In conclusion, the M39003/03-3020H tantalum capacitor offers a small profile suitable for aerospace and military applications. The capacitor works on the electrochemical nature of tantalum to store electrical charge which can be discharged when required. The capacitance and voltage rating of the capacitor dictate its efficiency and overall performance.

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