T540D477K2R5BH8605WAFL

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:	±10%
Capacitance:	470µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray - Waffle

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Tantalum - Polymer Capacitors

Tantalum - Polymer Capacitors are a class of electrolytic capacitors that were developed first with traditional anode compositions and more recently with an advanced polymer-based anode composition. Structurally, Tantalum - Polymer Capacitors are a combination of a sintered anode encased in a metal-plastic hermetic package. The advanced polymer-based anode composition gives the capacitors a range of features including low leakage current, low effective series resistances (ESRs) and high thermal stability.The T540D477K2R5BH8605WAFL capacitor is a surface-mountable, radial leaded device that operates at a maximum temperature of 125 °C. The capacitor has a low temperature coefficient (TCR) typically in the +30 to +40 ppm/°C range and, as such, is ideal for applications that require stable capacitance values. The device has a capacitance of 47 microfarads, a maximum working voltage of 5.5 V, an ESR of 0.17 Ohm, a maximum ripple current of 1.12 Amps and a lifetime of 2000 hours of operation at 105 °C. The T540D477K2R5BH8605WAFL capacitor is well-suited for digital circuits and power supplies such as voltage regulators, audio amplifiers, and switching power supplies. Due to its high thermal stability, it is especially suitable for high-reliability applications or where long-term performance is important. In terms of working principle, the Tantalum - Polymer Capacitors consist of a sintered anode, a porous cathode material, a conductive organic polymer electrolyte, and a pressure seal. In operation, the positive and negative terminals of the capacitor apply two different electrical potentials to the anode and cathode of the device. This creates an electric field, which in turn causes the device to “polarize”, forming a potential barrier between the two materials. The electrolyte in the T540D477K2R5BH8605WAFL acts as a buffer between the anode and the cathode. It allows positive ions to pass through, which in turn transfer some of their charge to the anode. As the electrolyte also allows the negative ions to pass through, the electrical charge is balanced. This process is what creates the capacitance of the device.The T540D477K2R5BH8605WAFL capacitor also features low-inductance design which helps to minimize the effect of high-frequency self-resonance. This helps to reduce the peak current ripple at high frequencies. Overall, the T540D477K2R5BH8605WAFL capacitor is a well-designed surface mount device with robust features. It has high thermal stability, low ESR and lifetime of 2000 hours, making it ideal for power-hungry applications. Its low-inductance design helps to reduce the peak current ripple at high frequencies, making it well-suited for digital circuits and power supplies.

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