F930J685MAA Capacitors

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
Manufacturer Size Code:	A
Lead Spacing:	--
Height - Seated (Max):	0.071" (1.80mm)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)
Package / Case:	1206 (3216 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	--
Series:	F93
ESR (Equivalent Series Resistance):	3.5 Ohm
Type:	Molded
Voltage - Rated:	6.3V
Tolerance:	±20%
Capacitance:	6.8µF
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 that is composed of tantalum metal, as well as an oxide. Tantalum has been used in the manufacture of capacitors since 1950, and are known for their small size, high capacities, and high frequency response capabilities. These characteristics, in addition to their low leakage and constructability, make them suitable for use in many applications. One such application is the F930J685MAA, which is a high capacitance, low ESR, and low profile SMD tantalum capacitor.

F930J685MAA Application Field and Working Principle

The F930J685MAA is a surface mounted tantalum device which is designed for low voltage and high temperature applications, such as in LEDs, power factor correction circuits, and automotive audio/video products. This device has a miniature footprint, with a rated capacitance of 6.85μF and a rated voltage of 630V. It has a high capacitance with a low equivalent series resistance (ESR) of 0.22Ω, making it suitable for use in high frequency applications.The working principle of this device is essentially the same as any other electrolytic capacitor. It consists of two plates with an insulating dielectric between them. To construct the device, two tantalum oxide layers are formed over the metal plates using an oxide-forming electrolyte. One plate is an anode, while the other plate is a cathode. When an electrical voltage is applied across the plates, charge accumulates on the surface of the dielectric, resulting in an electric field across the plates. This field allows the capacitor to store energy, a quantity proportional to the applied voltage and the capacitance value.The high capacitance of the F930J685MAA is achieved through the use of a high dielectric constant material that has a relatively small thickness compared to other types of capacitors. This combination allows for a very low ESR, enabling the device to accurately filter high frequencies. The low profile design also ensures that this device is ideal for use in embedded applications, where space is a factor.

Conclusion

The F930J685MAA is an ideal device for low voltage, high temperature applications due to its high capacitance, low profile, and low ESR. Its small size and high frequency response capabilities make it suitable for embedded applications, such as in power factor correction circuits, LEDs, and automotive audio/video products. The device works on the same principles as any other electrolytic capacitor, utilizing a dielectric layer between two tantalum plates to store energy when an electrical voltage is applied to the plates.

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