Operating Temperature:	-55°C ~ 125°C
Failure Rate:	S (0.001%)
Features:	Military
Manufacturer Size Code:	C
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.289" Dia x 0.686" L (7.34mm x 17.42mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39003/9, CSR21
ESR (Equivalent Series Resistance):	230 mOhm
Type:	Hermetically Sealed
Voltage - Rated:	50V
Tolerance:	±5%
Capacitance:	10µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Tantalum Capacitors and the M39003/09-0373/HSD Application Field and Working Principle

Tantalum capacitors are a type of electrolytic capacitors which rely on two metal electrodes – an anode and a cathode – and an electrolytic material which acts as a dielectric. The material used as the electrolytic material in tantalum capacitors is typically tantalum pentoxide, which is a component of tantalum metal. This makes tantalum capacitors particularly suitable for use in high voltage applications due to their robust construction and high dielectric strength.The M39003/09-0373/HSD is a surface-mount tantalum capacitor with a rated working voltage of 50 volts. It is a polarized capacitor, meaning that one of the capacitor’s terminals is designated as the positive input and the other is designated as the negative input. This capacitor is designed to provide low ESR (Equivalent Series Resistance) for a wide range of applications in consumer electronics, automotive electronics, and military/aerospace applications.The M39003/09-0373/HSD is a very reliable capacitor which is designed to withstand high temperatures and provide a high level of performance. It has an ultra-low ESR rating of 0.05 ohm and a high tolerance rating of ±10%, which make it very well suited for use in applications where small electrical current swings are expected. Additionally, the capacitor is rated for a temperature range of -55°C to +105°C, making it suitable for a wide range of devices which need to operate in both hot and cold temperatures.The working principle of the M39003/09-0373/HSD is based on the typical functioning of an electrolytic capacitor. When a voltage is applied across the terminals, current begins to flow and the capacitor starts to store electrostatic energy. This is due to the arrangement of the capacitor’s two metal electrodes—the anode and the cathode—which act as a barrier between the electric charges and the dielectric material.As the voltage is increased, the electric charges begin to flow more effectively and stored energy increases. As these charges try to neutralize, a small amount of current—known as leakage current—flows through the capacitor. This is the primary manner in which capacitors like the M39003/09-0373/HSD dissipate energy and decrease their performance over time.In conclusion, the M39003/09-0373/HSD is a highly reliable and robust surface-mount tantalum capacitor which is designed to provide excellent performance in extreme temperature conditions. It has an ultra-low ESR rating and high tolerance rating, making it an ideal choice for a range of applications which require small electrical current swings. The working principle of the capacitor is based on the principles of an electrolytic capacitor, where electric charges are stored to store energy and leakage current dissipates energy.

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