T540D687M2R5BH8505WAFL

Operating Temperature:	-55°C ~ 125°C
Features:	High Reliability
Ratings:	COTS
Manufacturer Size Code:	D
Lead Spacing:	--
Height - Seated (Max):	0.122" (3.10mm)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Package / Case:	2917 (7343 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	2000 Hrs @ 125°C
Series:	KO-CAP® T540
ESR (Equivalent Series Resistance):	40 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	2.5V
Tolerance:	±20%
Capacitance:	680µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray - Waffle

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Introduction to Tantalum - Polymer Capacitors

Tantalum capacitors, or Ta capacitors for short, are a type of electrolytic capacitor, consisting of two conductive plates that are separated by a solid electrolyte material. The plates are made of a conductive material, usually tantalum or an oxygen-free copper, and the electrolyte is an electrolyte, such as a solution of potassium chloride, phosphoric acid, or ethylene-diamine. These capacitors are generally polarised, and are widely used in electronic circuits as a means of storing electrical energy.The T540D687M2R5BH8505WAFL is a type of Ta capacitor, and it is a surface mount component. This surface mount component has two basic designations: the type (T), and the model (D687M2R5BH8505WAFL). The type is the general type of the capacitor; it indicates the kind of material used in the construction of the capacitor and the dielectric material used. The model specifies the size, wattage, and polarity of the component.

Application Field

Tantalum - Polymer capacitors are used in a wide range of applications, including high-frequency local-area-network systems, voltage regulators and power converters, and automotive fuel systems. They are often used in these applications because of their high capacitance-density ratio, which makes them ideal for high frequency applications, as well as their superior temperature performance. Tantalum - Polymer capacitors are also used in a number of military, aerospace, and medical applications. This is due to the fact that they are relatively non-reactive in harsh environments and possess low-leakage current properties. Additionally, their low ESR (Equivalent Series Resistance) capabilities make them ideal for high-power equipment.

Working Principle

Tantalum - Polymer capacitors work by taking advantage of the different electrical properties of their component materials. The two plates of the capacitor are made of a conductive material and are separated by an electrolyte, which acts as a dielectric between the two plates. As the electrical current passes between the two plates, a charge builds up on the plates, and a capacitance is developed. This capacitance is what is used to store the energy in the capacitor. The charge stored in the capacitor is determined by the ratio of the area between the two plates of the capacitor to the thickness of the electrolyte. Generally, the greater the surface area between the plates and the thinner the electrolyte, the greater the capacitance of the capacitor. As a result, these capacitors can store large amounts of charge and are used in a variety of electronic applications.

Conclusion

Tantalum - Polymer capacitors are an important component in many applications, from automotive fuel systems to military and aerospace applications. The T540D687M2R5BH8505WAFL is a surface mount component that falls under the Ta capacitor classification. It is used for its high capacitance-density ratio and superior temperature performance, making it ideal for high frequency applications. The working principle of these capacitors takes advantage of the different electrical properties of their component materials, and their capacitance is determined by the ratio of the area between the two plates of the capacitor to the thickness of the electrolyte.

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