NOJB476M004RWJ

Current - Leakage:	3.8µA
Size / Dimension:	0.138" L x 0.110" W (3.50mm x 2.80mm)
Supplier Device Package:	1210 (3528 Metric)
Operating Temperature:	-55°C ~ 105°C
Features:	--
Height - Seated (Max):	0.083" (2.10mm)
Manufacturer Size Code:	B
Package / Case:	1411 (3528 Metric), 1210
Mounting Type:	Surface Mount
Dissipation Factor:	6%
Series:	OxiCap® NOJ
ESR (Equivalent Series Resistance):	1.6 Ohms
Voltage - Rated:	4V
Tolerance:	±20%
Capacitance:	47µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to Niobium Oxide Capacitors

Niobium oxide capacitors, also known as Nb2O5 capacitors, are electrolytic capacitors that employ an electrolyte composed of niobium oxide. Despite their relatively modern advent (2013) they have become widely used in commercial and industrial applications due to their unique features.

Properties of Niobium Oxide Capacitors

Niobium oxide capacitors are more suitable for high-temperature applications than other types of capacitors. This is because they are not damaged by high temperatures and have high thermal capacity, low ESR, and high dielectric constant. Additionally, they are also more reliable than other capacitors, as their failure rate is low.Another attractive feature of niobium oxide capacitors is their low equivalent series resistance (ESR). The ESR of these capacitors is more than three times lower than that of other capacitors of similar size. This makes them ideal for applications where power consumption reduction is a priority.Lastly, niobium oxide capacitors are also highly flexible. They can be used in a variety of applications and are compatible with many operating environments.

NOJB476M004RWJ Application Field and Working Principle

The NOJB476M004RWJ is a niobium oxide capacitor made by Rohm Semiconductor. It has a rated rated voltage of 10V and a rated capacitance of 4.7uF. The capacitor is designed for automotive, consumer electronics and industrial applications, particularly DC/DC converter applications.The working principle of a niobium oxide capacitor is the same as that of other electrolytic capacitors. A niobium oxide-based electrolyte acts as a conductor between two plates, the anode and the cathode. When an electric current is applied to the capacitor, the niobium oxide ions move from the anode to the cathode, and transiently store the energy of the current as an electric field between the two plates. This electric field is then able to provide the capacitance needed for the circuit.

Conclusion

Niobium oxide capacitors are a relatively new development. But thanks to their high thermal capacity, low ESR, high dielectric constant, and increased reliability, they have become commonplace in commercial and industrial applications. The NOJB476M004RWJ is an example of a niobium oxide capacitor suitable for a range of automotive, consumer electronics, and industrial applications. The working principle of this capacitor is the same as that of any other electrolytic capacitor.

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