Allicdata Part #: | T540B686M004BH8510WAFL-ND |
Manufacturer Part#: |
T540B686M004BH8510WAFL |
Price: | $ 4.21 |
Product Category: | Capacitors |
Manufacturer: | KEMET |
Short Description: | CAP TANT POLY 68UF 4V 1411 |
More Detail: | 68µF Molded Tantalum Polymer Capacitor 4V 1411 (35... |
DataSheet: | T540B686M004BH8510WAFL Datasheet/PDF |
Quantity: | 1000 |
Lead Free Status / RoHS Status: | Contains lead / RoHS non-compliant |
Moisture Sensitivity Level (MSL): | 3 (168 Hours) |
120 +: | $ 3.82016 |
Specifications
Series: | KO-CAP® T540 |
Packaging: | Tray - Waffle |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Capacitance: | 68µF |
Tolerance: | ±20% |
Voltage - Rated: | 4V |
Type: | Molded |
ESR (Equivalent Series Resistance): | 80 mOhm @ 100kHz |
Operating Temperature: | -55°C ~ 125°C |
Lifetime @ Temp.: | 2000 Hrs @ 125°C |
Mounting Type: | Surface Mount |
Package / Case: | 1411 (3528 Metric) |
Size / Dimension: | 0.138" L x 0.110" W (3.50mm x 2.80mm) |
Height - Seated (Max): | 0.083" (2.10mm) |
Lead Spacing: | -- |
Manufacturer Size Code: | B |
Ratings: | COTS |
Features: | High Reliability |
Description
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Tantalum – Polymer CapacitorsA tantalum – polymer capacitor, also known as a T540B686M004BH8510WAFL, is a capacitive component used in a wide variety of applications. It is a component with a dielectric like, solid-state electrolytic material, and two electrodes that are connected to two electrical contacts. This capacitor is designed to store electric charge and provide an incredibly high level of current handling capabilities. In the past, traditional tantalum electrolytic capacitors, or TECs, were usually used in power conversion and other power supply applications due to their high capacitance to volume ratio and low equivalent series resistance (ESR). However, the emergence of new semiconductor technologies allowed for new forms of capacitors to become commercially available, such as the tantalum – polymer capacitor. This type of capacitor has a much greater ability to manage temperature-induced capacitance changes and is insensitive to the effects of AC ripple current, making it suitable for use in power conversion applications. Additionally, its high capacitance values and low ESR give it a significant advantage over other types of capacitors in power conversion and other power supply applications. The structure of a tantalum – polymer capacitor consists of two layers of conductive polymer embedded between two sheets of solid tantalum. The conductive polymer acts as an electrolyte, while the layers of tantalum serve as electrodes. The electrodes are then connected to a number of pins on the edge of the capacitor, which provide the necessary connection to circuit boards. Inside the capacitor, the two electrodes are separated by an insulating material, typically aluminum oxide. There are several advantages associated with using tantalum – polymer capacitors for power conversion applications. The most notable is their low packaging thickness compared to traditional and other surface-mount capacitors, reducing the board surface area needed to mount them. Additionally, their high capacitance values and low ESR reduce the amount of power dissipated as heat, which improves system reliability. As well, their ability to withstand high temperatures and be unaffected by ripple currents and AC voltages makes them suitable for high-power applications, including automotive, military and industrial systems. The working principle of a tantalum – polymer capacitor involves the movement of electric charge between the two electrodes. When an AC voltage connected across the terminals of the capacitor, an electrical current flows through the conductive polymer and into the capacitor’s dielectric layer. The electrical current then flows through the dielectric and the electrons flowing through the electrodes leave behind a charge. This stored charge can be used to store energy and create a voltage across the capacitor’s terminals. Tantalum – polymer capacitors are commonly used in a wide variety of applications, including computers, communications systems, automotive electronics, military products, and industrial systems. Their ability to provide electrical energy storage, resist ripple current and AC voltage, and support high temperature ratings has made them a preferred choice for many modern applications. While traditional electrolytic capacitors are still in use, the emergence of tantalum – polymer capacitors has made them a more cost-effective and reliable option for many applications.The specific data is subject to PDF, and the above content is for reference
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