M39003/01-2818H

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	R (0.01%)
Features:	Military
Manufacturer Size Code:	A
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.135" Dia x 0.286" L (3.43mm x 7.26mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39003/1, CSR13
ESR (Equivalent Series Resistance):	--
Type:	Hermetically Sealed
Voltage - Rated:	50V
Tolerance:	±10%
Capacitance:	0.1µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Tantalum capacitors are a type of electrolytic capacitors composed of tantalum metal and electrolyte dielectric material. The M39003/01-2818H is one of the small size Class III hermetically sealed semiconductor capacitors belonging to this family. It is designed to have high temperature stability and low impedance at high temperatures.

Application field of M39003/01-2818H

M39003/01-2818H tantalum capacitors are primarily used as filter capacitors in DC power supplies and radio frequency (RF) circuits, such as oscillators, amplifiers, mixers, and impedance transformers. They are also used as coupling and storage capacitors in channel switching applications and voltage regulators. In addition, they are used for power line filters to reduce the presence of noise, to reduce the ripple effect due to fluctuating input voltage, and to increase the power factor of AC circuits. The leads of M39003/01-2818H capacitors provide adequate soldering conditions. Therefore, they are well suited for installation on printed circuit board assemblies.

Working Principle of M39003/01-2818H

The M39003/01-2818H tantalum capacitor works on the principle of an electrolytic capacitor. It consists of two plates, the anode and cathode, separated by a thin layer of dielectric material. When a voltage is applied, positive ions from the liquid electrolyte accumulate on the anode while negative ions concentrate on the cathode, creating what is known as electrostatic capacitance. As the voltage increases, the gap between the two plates decreases, reducing the capacitance. This is known as voltage crowding.The dielectric material for M39003/01-2818H is a combination of manganese dioxide and capacitance-enhancing polymers. This provides it with good temperature stability and low impedance at high temperatures. The capacitance range of M39003/01-2818H is 0.1 to 320 μF, and the rated operating temperature range is - 55 °C to + 125 °C.

Conclusion

M39003/01-2818H tantalum capacitors are compact, hermetically sealed semiconductor capacitors with high temperature stability and low impedance. With a capacitance range of 0.1 to 320 μF and a rated operating temperature of - 55 °C to + 125 °C, they are primarily used for filtering DC power supplies, RF circuits, and AC circuits. They also provide adequate soldering conditions for installation on printed circuit board assemblies.

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