RL81C271MDN1

Series:	FPCAP, RL8
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymer
Capacitance:	270µF
Tolerance:	±20%
Voltage - Rated:	16V
ESR (Equivalent Series Resistance):	10 mOhm
Lifetime @ Temp.:	2000 Hrs @ 105°C
Operating Temperature:	-55°C ~ 105°C
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	500mA @ 120Hz
Ripple Current @ High Frequency:	5A @ 100kHz
Lead Spacing:	0.138" (3.50mm)
Size / Dimension:	0.315" Dia (8.00mm)
Height - Seated (Max):	0.354" (9.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can

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Introduction to Aluminum Polymer Capacitors

Aluminum-polymer capacitors are a relatively new class of capacitor that combines the advantages of both aluminum electrolytic and polymer electrolytic caps. The structure consists of two aluminum layers with a thin polymer sheet sandwiched between them. When an external voltage is applied, an electric field is created within the polymer which causes charge separation to occur. This charge separation is responsible for the capacitive effect.

RL81C271MDN1 Application Field and Working Principle

The RL81C271MDN1 is a high-precision aluminum-polymer capacitor that is typically used for decoupling, energy storage, and voltage noise reduction. It features an ultra-low ESR and a high capacitance rating. While the aluminum-polymer capacitors are very small in size, it offers a high capacitive effect. In addition, the capacitors are highly reliable, stable, and have a long operational life.

The Working Principle of the RL81C271MDN1

The working principle of the RL81C271MDN1 is based on electrochemical double layer capacitance. The aluminum layers act as the electrodes while the polymer film acts as the dielectric. When an external voltage is applied, electrons are attracted towards the negative facing of the capacitor and the positively charged ions move to the opposite side. This creates a double layer of charge and a capacitance is established within the unit. The electrons move rapidly within the capacitor and create an electric field between the capacitor’s plates. The capacitor’s capacitance value is determined by the voltage applied, the size of the plates, and the insulation within the unit.

Advantages of Aluminum-Polymer Capacitors

Aluminum-polymer capacitors are becoming increasingly popular, due to their numerous advantages compared to other types of capacitors such as aluminum electrolytics and polymer electrolytics. Firstly, due to its structure, the aluminum-polymer capacitor has a low equivalent series resistance (ESR) meaning that it can be used for high frequency applications such as switch-mode power supplies, motor control, and audio-video systems. In addition, aluminum-polymer capacitors have a high capacitance per unit volume, making them extremely space-efficient. The capacitors are also designed to operate at extreme temperatures ranging from -40℃ to +105℃, and feature excellent noise immunity and vibration tolerance. Finally, these capacitors are extremely reliable and have a longer operational life compared to other capacitor types because of their non-volatile electrolyte, which presents fewer leakage currents than electrolytic capacitors.

Conclusion

Aluminum-polymer capacitors provide more efficient and cost-effective solutions compared to traditional capacitor types, which is why they are becoming increasingly popular in a wide range of applications. The RL81C271MDN1 aluminum-polymer capacitor is highly-precise, reliable, and provides excellent performance in a wide range of applications. As technology advances, aluminium-polymer capacitors are increasingly being used for high-frequency applications such as voltage noise reduction and motor control.

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