T540B107M004BH8710

Series:	KO-CAP® T540
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	100µF
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

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Tantalum - Polymer CapacitorsTantalum – polymer capacitors, or simply “tantalum capacitors”, are types of capacitors that utilize a tantalum electrolyte. Its components are composed of an anode (usually made of tantalum powder), a cathode (typically either a polymer or an electrolytic solution), and a solid polymer electrolyte that sits between these two electrodes. The purpose of this capacitor is to store electrical energy in the form of charge. The T540B107M004BH8710 is a particular model of tantalum – polymer capacitor manufactured by KEMET Corporation. Its features include a wide temperature range (-55°C to 125°C), low parasitic inductance, high capacitance to volume ratio, and high-voltage operation up to an impressive 10V. This capacitor is mainly used in audio applications, most notably pulse bypass capacitors, which help to provide a stable voltage reference by reducing the noise generated by variations in the input voltage. The T540B107M004BH8710 is also commonly found in power management circuits, as these circuits rely heavily on high capacitance at low resistance. For example, they are often used to buffer voltage spikes, and to prevent voltage dips during heavy current draw scenarios. Working PrincipleThe working principle of the T540B107M004BH8710 is much like that of any other tantalum – polymer capacitor. When the voltage across the terminals is increased, the negatively charged ions start migrating from the anode towards the cathode. Meanwhile, positively charged ions start moving from the cathode towards the anode, and the positively and negatively charged ions start accumulating on either side, thus resulting in an increase in voltage that is greater than the supplied voltage. Hence, the capacitance takes a form of an electrical double layer, allowing for the storage of an electrical charge. When a current is passed through the capacitor, the ions will start migrating in the opposite direction, thus resulting in a decrease in voltage. This process is referred to as the “dielectric relaxation” and it is the main advantage of using tantalum – polymer capacitors over other types of capacitors. The other primary advantage of the T540B107M004BH8710 is its high capacitance to volume ratio, which allows for a much smaller size in comparison to other types of capacitors. ConclusionTantalum – polymer capacitors, such as the T540B107M004BH8710 are proving to be invaluable in many electronics applications. From reducing noise in audio applications, to buffering voltage spikes in power management circuits, these compact capacitors are revolutionizing the way in which we utilize capacitors in various applications. With features such as high capacitance to volume ratios, wide temperature ranges, and low parasitic inductance, these tantalum – polymer capacitors will continue to be an integral part of the electronics industry for years to come.

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