TCA1A685M8R Capacitors

Series:	TC
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance:	6.8µF
Tolerance:	±20%
Voltage - Rated:	10V
Type:	Molded
ESR (Equivalent Series Resistance):	--
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	--
Mounting Type:	Surface Mount
Package / Case:	1206 (3216 Metric)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)
Height - Seated (Max):	0.071" (1.80mm)
Lead Spacing:	--
Manufacturer Size Code:	A
Features:	General Purpose
Failure Rate:	--

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Introduction

Tantalum capacitors (also known as ‘tantalum electrolytic’) is a type of capacitor, named after its main constituent, the metal tantalum. It is an electrical component that stores energy and can be charged or discharged very quickly. Tantalum capacitors work on a principle of trapping charges within an anodic oxide layer that is formed on the capacitor when it is energized. This layer is semiconducting in nature, allowing for charge to be trapped within the anode and cathode of the capacitor.The TCA1A685M8R is an electrolytic capacitor which is specifically designed for application in electronic circuits. It is a large-sized capacitor that is typically used in high-power circuits due to its high capacity. It has a capacitance rating of 680 µF and a working voltage rating of 25 V. The capacitor features a radial leaded construction with a black case, making it easily mountable for any application requiring high-reliable capacitive power.

Layout of TCA1A685M8R

The TCA1A685M8R is a radial leaded capacitor consisting of three layers. The bottom layer is composed of a solid tantalum block with an anode piercer in the center. This piercer helps create a conductive path between the anode and the capacitor terminals. On top of the anode piercer is a porous tantalum layer which acts as the dielectric material. This layer allows charges to be trapped within the anode and the cathode of the capacitor. On top of this layer is a layer composed of a dielectric electrolyte solution which acts as the cathode connection. The outer surface of the capacitor is protected by a plastic casing that is highly resistant to temperature, vibration, and electrical shocks.

Working Principle

The working principle behind TCA1A685M8R is similar to any other electrolytic capacitor. When electricity is applied to the capacitor, a layer of anodic oxide forms on the surface of the tantalum block. This layer acts as a semiconductor, allowing for charge buildup between the anode and the cathode of the capacitor. This stored charge can then be released when a circuit is powered down or if the capacitor experiences an electrical shock. The capacitance value is determined by the size of the porous tantalum layer.

Application Field of TCA1A685M8R

TCA1A685M8R capacitors are generally used in applications that require high current flow and stable voltage. They are ideal for power supply filtering and noise suppression solutions in electronic devices such as computers and modems. They can also be used for feedback/circuit stabilization purposes in audio circuits, providing stable voltages even during sudden load changes and voltage fluctuations. Furthermore, due to their high capacitance ratings, they are often used in automotive applications that require high performance and reliability. TCA1A685M8R capacitors are also ideal for power amplifier/supply regulation, voltage regulators, and motor surge protection.

Conclusion

The TCA1A685M8R is a high-quality, high-reliability capacitive device that is used in numerous applications that require high-reliability and fast response times. It is well-suited for both low- and high-power applications due to its robust design and construction. The capacitance value of the device ensures long-term stability and high performance. It is also highly resistant to temperature and electrical shocks, making it a reliable choice for many applications.

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