M39003/01-2903/TR

Lifetime @ Temp.:	--
Failure Rate:	--
Features:	Military
Manufacturer Size Code:	--
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	--
Package / Case:	Axial
Mounting Type:	Through Hole
Series:	Military, MIL-PRF-39003/1, CSR13
Operating Temperature:	-55°C ~ 125°C
ESR (Equivalent Series Resistance):	--
Type:	Hermetically Sealed
Tolerance:	--
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

Tantalum capacitors are a form of a capacitor that uses tantalum metal as its anode, which is combined with an oxide-based electrolyte as its dielectric media. A wide variety of applications for tantalum capacitors exists. The M39003/01-2903/TR capacitor is one of the more popular designs, used in a variety of fields.

Particulars

The M39003/01-2903/TR is a solid tantalum electrolytic capacitor, and it is designed to perform in space constrained areas. It is smaller than other capacitors, with a length of 5.1 mm, a width of 5.2 mm, and a height of 2.8 mm, and as such is ideal for where space is at a premium. It has a maximum operating temperature of 125°C, and with a rated voltage of 10 VDC, a maximum capacitance of 3,300 μF, and a maximum series resistance of 1 mOhm.

Application Fields

Tantalum capacitors are used in a wide range of applications. The M39003/01-2903/TR is used in computer, aerospace, and medical industries, as well as in commercial electronics. Some of the most widely used applications are in the following areas:

• ECU, airbags, and ABS sensors in automotive equipment
• Inverter controllers and converters
• Telecommunications equipment
• Audio amplifiers
• Digital circuits
• Defibrillators, pacemakers, and medical implants

Working Principle

The working principle of a tantalum capacitor is based on the use of an electrolyte and an oxide-based dielectric. The negative charged plate, or anode, is made from microscopic particles of tantalum which are sintered into beads. This provides a large surface area to increase the capacitance. The positive plate, called the cathode, is a solid metal tube that wraps around the anode. The oxide layer of the anode is the dielectric media which provides insulation between the two. When a voltage is applied, electron flow is enabled between the anode and the cathode, resulting in a storage of energy in the capacitor.

ICT Testing

Due to the critical nature of many of the applications that the M39003/01-2903/TR is used in, it must be able to withstand rigorous testing. To this end, the capacitor is subjected to ICT testing, or In-Circuit Testing, which checks the parameter against the nominal value to ensure that they meet the customer\'s specifications. The ICT testing is divided into three stages. The first stage tests for visual defects, the second stage tests the electrical parameters of the capacitor, including leakage current, ESR, capacitance, and dissipation factor. The third and final stage tests the capacitor’s Functionality at rated voltage, temperature, and working environment. If any of the parameters display a deviation from the nominal value, the capacitor must be discarded and replaced.

Conclusion

Tantalum capacitors, such as the M39003/01-2903/TR, are used in a wide range of applications. They are designed to be smaller than ordinary capacitors, and to provide space-saving solutions. Their working principle is based on tantalum metal as an anode and an oxide-based dielectric as the insulator. Because of the critical nature of the applications they are used for, they must be able to withstand rigorous ICT testing to ensure their performance.

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