T540B157M003AH8610

Operating Temperature:	-55°C ~ 125°C
Features:	High Reliability
Ratings:	COTS
Manufacturer Size Code:	B
Lead Spacing:	--
Height - Seated (Max):	0.083" (2.10mm)
Size / Dimension:	0.138" L x 0.110" W (3.50mm x 2.80mm)
Package / Case:	1411 (3528 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	2000 Hrs @ 125°C
Series:	KO-CAP® T540
ESR (Equivalent Series Resistance):	80 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	3V
Tolerance:	±20%
Capacitance:	150µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to Tantalum - Polymer Capacitors

Tantalum-Polymer capacitors are a type of capacitor that combines the high capacitance of tantalum capacitors with the superior stability and improved power performance of polymer capacitors. They are commonly used in a wide range of electronic products, including medical devices, communications systems, industrial automation systems, and power supplies.

T540B157M003AH8610 Application

The T540B157M003AH8610 is a 295 VDC rated, surface mount, tantalum-polymer capacitor that offers low ESR (equivalent series resistance) and high capacitance values. The product is designed for high frequency, high temperature, and high-voltage applications. It can be used in power supply decoupling, noise suppression, and filtering applications, as well as in automotive systems, aircraft, and aerospace applications. This device is also well-suited for high-end audio and video applications.

T540B157M003AH8610 Working Principle

Tantalum-Polymer capacitors work by storing electrical charge on capped layers of conductive material. Generally, it consists of a tantalum powder core, surrounded by a polymer electrolyte. The dielectric insulator between the two layers is a polymer that has been infused with moisture, allowing for a smooth transition between charge and discharge.The main advantage of the tantalum-polymer capacitors is the low ESR (equivalent series resistance) at higher temperatures, which enables greater performance in a wider range of applications. This makes the capacitor well-suited for applications in high-temperature environments. The polymer also provides higher reliability in terms of long life, high-temperature performance, and better capacitance retention over a long life compared to conventional capacitors.In addition, the polymer helps reduce dielectric losses and voltage transients, providing lower heat generation and higher ripple current ratings. It also offers excellent volumetric efficiency, allowing more capacitance in less space, saving board-level real estate. As with all electrolytic capacitors, they are polarized, meaning that they must be installed in the proper orientation (positive to positive, negative to negative).

Conclusion

The T540B157M003AH8610 is a 295 VDC rated tantalum-polymer capacitor. It is an excellent choice for a wide range of high-end applications, including power supply decoupling, noise suppression, filtering, and even automotive, aircraft, and aerospace applications. It offers superior performance over other capacitor types, with low ESR, great capacitance retention, good volumetric efficiency, low heat generation, and higher ripple current ratings. As with any polarized capacitor, correct orientation of the leads must be observed.

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