M39003/03-0353

Series:	Military, MIL-PRF-39003/3, CSR23
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	27µF
Tolerance:	±10%
Voltage - Rated:	20V
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:	R (0.01%)

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Tantalum Capacitors: M39003/03-0353 Application Field and Working PrincipleTantalum capacitors are a type of solid electrolytic capacitors mainly composed of tantalum anode (generally porous tantalum), electrolyte and anode foil. With the advantages of low equivalent series resistance (ESR) and small footprint, they are increasingly used in the modern electronics industry. M39003/03-0353 series capacitors, as a part of the tantalum capacitor family, are especially applied in military-grade projects due to its excellent reliability and high temperature resistance. What\'s more, its solid, lightweight and highly stable structure leads to versatility and widespread usage. In this article, the background, application field and working mechanism of the M39003/03-0353 series capacitors will be discussed in detail.BackgroundThe General Electric Company (GEC) first developed the tantalum capacitor in 1956. The invention became the cornerstone of the capacitor industry and drastically changed the industrial landscape. In the following decades, there have been great advances in the field of tantalum capacitors. Many manufacturers have launched their own products, and the M39003/03-0353 series, produced by Advanced Interconnections Corporation, is renowned for its outstanding performance. M39003/03-0353 family is a range of military-grade and high reliability electrolytic capacitors for military and aerospace market segments. Constructed with cylindrical enclosures, the capacitors encompass both standard and hermetically sealed versions with a variety of voltage ratings and capacitance values. Application FieldThe M39003/03-0353 family capacitors are mainly used in military and aerospace equipment. With its high precision and superior reliability, the series is suitable for long-term applications such as data storage, satellite communication, radar applications, sonar, and radio-frequency identification (RFID). The great advantage of M39003/03-0353 series lies in its small size and epoxy covered package, making it capable of withstanding harsh environmental conditions, such as extreme temperatures and high levels of stress. Other than military and aerospace equipment, the capacitors also find applications in avionics, missiles, torpedoes, launchers and aircrafts. Working PrincipleM39003/03-0353 capacitors work the same way as other types of capacitors, by means of the electrochemical process. Inside the capacitor is a solid, porous tantalum anode. When a potential difference is applied across the electrodes of the capacitor (anode and cathode) the anode “electrolyzes” the electrolyte, forming a thin oxide layer that acts as a dielectric between anode and cathode. The oxide layer prevents current from flowing between anode and cathode, creating a storage of charge with a corresponding capacitance value. Once a certain voltage is reached, the layer will block any further current flow, thus limiting the short-term voltage fluctuations. To ensure long service life, the M39003/03-0353 capacitors are constructed with an organic protective coating, enabling them to withstand extreme temperature and pressure conditions. The capacitors\' high reliability also comes from its solid tantalum anode, the oxide layer created, and the close contact between the anode, dielectric and cathode, which ensures minimal leakage current and minimal series resistance (ESR). ConclusionIn conclusion, the M39003/03-0353 series capacitors are widely used in military and aerospace projects due to their high reliability and small size. The capacitors are constructed with cylindrical enclosures and employ the electrochemical and electrostatic principles to achieve their desired output, making them highly stable and reliable in extreme operating conditions.

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