M39003/03-0287/TR

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	P (0.1%)
Features:	Military
Manufacturer Size Code:	D
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.351" Dia x 0.786" L (8.92mm x 19.96mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39003/3, CSR23
ESR (Equivalent Series Resistance):	--
Type:	Hermetically Sealed
Voltage - Rated:	50V
Tolerance:	±10%
Capacitance:	39µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitor, and the M39003/03-0287/TR is a particularly distinctive type. They are generally constructed using layers of two different metals separated by a liquid or solid dielectric material. The tantalum capacitors in the M39003/03-0287/TR series have a particularly strong dielectric, so they are capable of storing and releasing charge quickly. The most common application of these capacitors is in high-frequency electronics, but they are also used in applications such as motor controllers, circuit protection, and power supplies. The M39003/03-0287/TR capacitors are particularly well suited for low-voltage applications, as their special design allows for a very low equivalent series resistance (ESL). This low ESL keeps power dissipation low, meaning that more charge can be stored in the capacitor for longer periods of time. The capacitors are also able to withstand higher temperature ranges, making them ideal for applications that require extended periods of operation. Additionally, the capacitors’ construction makes them highly stable with regard to changes in the voltage and environmental conditions.

Structure

The M39003/03-0287/TR capacitors are composed of five layers of alternating metal and dielectric material, including a liquid dielectric. The primary material is tantalum, which is a grey metal that has a high thermal conductivity and low electrical resistance. The other layers consist of a cathode (positively charged), a pressurized conductive anode (negatively charged), a dielectric (glass-like material), and an electrolyte solution. The tantalum cathode is the layer that provides the capacitance, as it contains a large concentration of ions. The anode is a mixture of oxygen and metal that has been pressurized, which forms an oxide layer that acts as a filter between the two layers. The dielectric provides the electrical insulation, keeping the electrolyte away from the metal layers and preventing any electrical leakage. The electrolyte solution is composed of a liquid electrolyte, and this solution helps the capacitor store and discharge charge quickly.

Working Principle

The M39003/03-0287/TR capacitors use the voltage difference between the positive and negative terminals to create a potential to store energy. When a voltage is applied to the positive and negative terminals, ions in the electrolyte solution start to move towards the anode. This creates a current, which builds up a charge in the capacitor. When the capacitance reaches a certain level, the electrons in the capacitor start to repel each other and a buildup of electricity occurs. This buildup of charge allows the capacitor to store the energy. When the capacitor is no longer supplied with voltage, the electrons start to migrate towards the negative terminal, releasing the stored energy. This discharge phase releases the stored energy that was generated from the voltage difference between the terminals. The capacitor is then ready to receive another charge, and the cycle repeats itself. This process is known as capacitance charging/discharging.

Conclusion

The M39003/03-0287/TR is an ideal capacitor for low-voltage applications, as its construction allows for a low equivalent series resistance and the ability to withstand higher temperatures. This makes it an ideal choice for applications that require extended periods of operation. Furthermore, the five-layer construction allows the capacitor to store and release charge quickly, making it perfect for high-frequency electronics. Ultimately, this capacitor is a reliable and dependable option that is sure to fulfil the needs of its target applications.

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