TM3B685M020LBA

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	High Reliability
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.:	--
Series:	TANTAMOUNT®, TM3
ESR (Equivalent Series Resistance):	2.5 Ohm
Type:	Molded
Voltage - Rated:	20V
Tolerance:	±20%
Capacitance:	6.8µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum CapacitorsTantalum capacitors are an important form of capacitive components in the electrical parts industry and are widely used in various electronic products. A common type of tantalum capacitor is the TM3B685M020LBA. This article will discuss the application field and working principle of the TM3B685M020LBA.The TM3B685M020LBA is a radial-lead, wet-bulk tantalum capacitor. It is characterized by a rated capacitance of 0.22u F, low ESR of 0.4 Ohm, and a voltage rating of 4 VDC. The device measures 3.2x11.2x2.2mm and is designed primarily for use in mobile communication and digital multimedia equipment.In terms of application fields, the TM3B685M020LBA can be used in a variety of applications. It is particularly useful for decoupling applications in digital circuits. These circuits require that the internal circuit impedance is kept low so that better transient responses can be achieved. The low ESR of the TM3B685M020LBA makes it ideal for damping out spikes and transients in the circuit.Similarly, the TM3B685M020LBA can be used in power supply applications as a polarity reversal protection device and voltage source regulator. The capability of the device to survive polarity reversal and produce low impedance in the charging cycle makes it ideal for these applications. Furthermore, the device can be used in audio circuits as a filter as well as bias voltage source.In terms of its working principle, the operation of a tantalum capacitor is different from that of an electrolytic capacitor. In an electrolytic capacitor, an electric current passes through the device in order to charge it up. However, in a tantalum capacitor, the electric current is used to oxidize the surface of the electrode, increasing its effective surface area. This increased surface area serves to increase the capacitance of the device. The value of the voltage at which the device starts to oxidize is referred to as the breakdown voltage. One disadvantage of this type of capacitor is its temperature response. The capacitance of the device changes as the temperature changes. Generally, the capacitance reduces as the temperature increases. As a result, the device must be carefully matched to the application to ensure that it does not go outside its specified temperature range.Overall, the TM3B685M020LBA is a useful device for a variety of decoupling, filtering, and regulating applications. Furthermore, its working principle is quite different from that of an electrolytic capacitor. The device must be operated within its specified temperature range in order to optimize its performance.

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