109D687X9025K2

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	Wet Tantalum
Manufacturer Size Code:	K
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.406" Dia x 1.217" L (10.31mm x 30.91mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	TANTALEX®, 109D
ESR (Equivalent Series Resistance):	1.2 Ohm
Type:	Hermetically Sealed
Voltage - Rated:	25V
Tolerance:	±10%
Capacitance:	680µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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Introduction to Tantalum Capacitors
Tantalum capacitors are an important type of electrical component used to store energy. They are formed by two metallic plates insulated by a dielectric material – in this case tantalum, hence the name. They are widely used in many different electronic applications such as amplifiers, antennae, motors and other devices in order to store power. The particular capacitor being featured in this article – 109D687X9025K2 – is more specifically a Tantalum Polymer Capacitor, which has a solid dielectric as opposed to a liquid dielectric used in other types of capacitors.

Application Field
Tantalum capacitors are used in a variety of applications; perhaps the most popular is in the field of motor control, where high currents require devices that store large amounts of energy in a short period of time. The 109D687X9025K2 capacitor is a particularly well suited device for these types of applications as its dielectric features very low resistance and resultant low ESR, allowing more current to flow to the motor faster. This is especially useful in applications such as electric vehicles where frequent acceleration and braking require constant storage and release of energy.The 109D687X9025K2 capacitor is also often used in power management systems in order to provide short-term power supply to computer systems, allowing for faster and more reliable operation. This is also very useful in situations where large, reliable voltage supplies are necessary, such as in military, aviation, and of course any other vital applications.Finally, the 109D687X9025K2 capacitor is often used in high-frequency switching circuits; such circuits often need a way to store energy, which can be used to counter any sudden dips or spikes in voltage, allowing the circuit to operate more efficiently. This is especially useful in applications such as wireless devices, where the radio signals need to be sent and received over a certain time, and need to be constantly regulated for optimal performance.

Working Principle
Tantalum capacitors operate on the same principle as other types of capacitors; the device stores electrical energy, which can then be released into the circuit as needed. The 109D687X9025K2 capacitor is unique in that it is a solid-state device, meaning that the dielectric is a solid material as opposed to a liquid. This means it has a much lower ESR than other types of capacitors, allowing it to store and release its energy faster and more efficiently.The operation of a tantalum capacitor is also fairly simple; the energy is stored in an electric field, which is created between two plates. The two plates are insulated with the dielectric material, which in this case is tantamount, allowing for the capacitor to store and release electrical energy as needed.The specific operation of the 109D687X9025K2 capacitor is as follows: the device is generally placed between two power sources, where it is then charged with energy. The energy stored in this capacitor can then be released into the circuit as needed, which is facilitated by its low ESR and solid dielectric material. This device, once fully charged, can hold that charge for a long period of time, and can do so rapidly without any significant drop in efficiency.

Conclusion
The 109D687X9025K2 capacitor is a very important component in many different fields, from motor control to power regulation to high-frequency switching. Its solid state design and low ESR allows for rapid, reliable storage and release of electrical energy, making it an invaluable device in many electronic applications.

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