T540D337M003DH8505

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:	3V
Tolerance:	±20%
Capacitance:	330µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum - Polymer Capacitors

Tantalum-Polymer capacitors are solid-state polymer-based electrochemical devices used in many electronic and electrical systems. The components can be used for many applications, ranging from power management, signal processing, filtering, inrush current protection, and acoustics. In addition, they are often used as replacements for electrolytic or ceramic capacitors or for increasing filter performance.The T540D337M003DH8505 tantalum-polymer capacitor is a surface mount component, with high reliability, low equivalent series resistance (ESR), and a wide operating temperature range, making it an ideal choice for various applications.

Applications

Tantalum-polymer capacitors can be found in a variety of applications, providing reliable performance and high quality. Some applications include:

• Power management: The capacitor can be used on the input of a DC-DC converter or PWM regulator. They can provide low-ESR ripple current, limiting total input current and reduce power dissipation.
• Signal processing: The capacitor can act as a filter, providing filtering and isolation from noise in sensitive signal lines.
• Inrush current protection: The capacitor can be used to limit inrush current in AC-fed circuits. This helps to protect the components as well as lower electromagnetic radiation inside the circuit.
• Acoustics: The capacitor can be used for audio filtering. The capacitor offers low ESR and high ripple current, providing great performance and reliability.
• Replacement for standard capacitors: The capacitor can be used as a replacement for electrolytic or ceramic capacitors, providing improved performance.

Working Principle

The T540D337M003DH8505 tantalum-polymer capacitor is a surface mount device, with a wide operating temperature range and low ESR. It operates in two main modes: anode storage mode and capacitance mode.In anode storage mode the anode material (tantalum) is charged and stored. This charge causes the anode material to act as a ‘storage’ element and store energy. When current flows in the device, the stored charge is released and aids the flow of current.In capacitance mode, the device operates as a capacitor, with the anode-cathode interlayer sandwiched between two conductive layers. Once voltage is applied to the device, a capacitor is formed between the two conducting layers. The charge stored in the interlayer will then regulate the current flowing between the two conducting layers.

Conclusion

The T540D337M003DH8505 tantalum-polymer capacitor offers excellent performance in a wide range of applications, from power management to signal processing. With a low ESR, wide operating temperature range, and anode storage mode and capacitance mode operation, it is an ideal choice for many applications.

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