M39003/01-8376

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	D (0.001%)
Features:	Military
Manufacturer Size Code:	B
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.185" Dia x 0.474" L (4.70mm x 12.04mm)
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:	100V
Tolerance:	±20%
Capacitance:	1µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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What are Tantalum Capacitors and How Do They Work?

Tantalum capacitors (M39003/01-8376) are used for a variety of applications in electronic circuits. This article will discuss the application field and working principle of tantalum capacitors, ranging from using them as smoothing capacitors in power supplies to using them in RF applications.

What are Tantalum Capacitors?

Tantalum capacitors are capacitors with a solid dielectric made of tantalum oxide. They are denser than electrolytic capacitors and provide excellent mechanical and electrical properties. This makes them an excellent choice for a wide range of applications. Tantalum capacitors consist of two metal electrodes (an anode and a cathode) separated by a tantalum oxide film. The electrodes are typically made of highly conductive materials such as nickel, gold, or palladium. Tantalum capacitors are commonly available in two different varieties: axial and radial lead. Axial lead tantalum capacitors feature two leads emerging from the sides of the capacitor body, while radial lead capacitors feature a single lead emerging from the end of the capacitor body. In both cases, the positive lead is typically marked with a "+" sign.

Application Fields

Tantalum capacitors are used in a variety of different applications. Common applications include:

• Power Supplies: Tantalum capacitors are often used in power supplies as smoothing capacitors to filter out ripple currents. The capacitors help to provide a clean, constant input voltage for the power supply.
• Electronics: Tantalum capacitors are also used in a variety of electrical circuits as timing and filtering capacitors. They allow for the transmission of signals at specific frequencies and help to reduce noise in the circuit.
• RF Applications: Tantalum capacitors can also be used for RF applications such as the blocking of unwanted signals or the tuning of frequency circuits. These capacitors are also commonly used in RF power amplifiers.

Working Principle

Tantalum capacitors work in a similar manner to other types of capacitors. When an electrical charge is applied to the capacitor, it stores a charge on each electrode. The charge stored on each electrode is proportional to the capacitor’s capacitance (expressed in Farads).When a voltage is applied across the capacitor, current starts to flow and the capacitor discharges. The rate at which the capacitor discharges depends on its capacitance and the amount of voltage applied. This process is known as capacitive discharge.When the capacitor has discharged, it can be recharged by reversing the current direction. The capacitor will then store a charge again and the process can be repeated. This process is known as capacitive recharge.

Conclusion

Tantalum capacitors (M39003/01-8376) are a reliable option for a variety of electrical applications. These capacitors feature small size, good electrical properties, and excellent long-term stability. They are commonly used in power supplies as well as in various RF applications, and their working principle is simple and straightforward.

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