T540D687K003AH8605

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:	±10%
Capacitance:	680µF
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 arguably some of the most versatile, cost-effective and efficient electrical components available. This type of capacitor offers a wide range of design, engineering and installation possibilities, particularly due to its unique properties. The T540D687K003AH8605 stands out as a definition of the Tantalum-Polymer capacitors due to its automatic and specific characteristics.

Application Field

T540D687K003AH8605 Tantalum-Polymer capacitors are widely used in numerous applications, ranging from automotive and communication equipment, to healthcare and power supply markets, which makes them one of the most popular capacitors. In the automotive field, T540D687K003AH8605 capacitors are widely utilized for electronic speed control, fuel injection systems, and central locking systems. Additionally, many communication sectors also use them, such as telecom networks and cellular phones for base station applications. Moreover, these types of capacitors are very useful in medical applications such as MRI systems, medical monitors and equipment. Finally, in the computer industry, the T540D687K003AH8605 plays a crucial role in the voltage regulation, standby power and clock oscillators.

Capacitor Construction

The T540D687K003AH8605 Tantalum-Polymer capacitors are constructed using a combination of several crucial components. The main one is a dielectric material, which serves as an insulation that prevents electric current from passing through it. This unit also contains internal electrodes, which are metallic plates that act as conductors; they are surrounded by an electrolyte that is capable of conducting electricity. Moreover, the capacitor also includes a metalized outer layer to act as the connection terminal. The capacitor is then coated with an epoxy sealant that protects it from environmental elements. When voltage is applied to the unit, an electric field is generated that creates electrical currents in between the electrodes.

Working Principle

The working principle of the T540D687K003AH8605 Tantalum-Polymer capacitor is extremely simple: When a potential difference is applied across the two electrodes, an electric field is created and it causes the metal atoms to lose some of their valence electrons due to the attraction of the metal ions within the electrolyte. As a result, the metal surface gains a temporary electric charge; thus, a capacitor is formed. The applied voltage determines the amount of the capacitor’s stored electrical energy; when the voltage is removed, the stored energy is released.

Advantages

T540D687K003AH8605 capacitors offer several advantages over other types of capacitors. The main advantage of a Tantalum-Polymer capacitor lies in its small size, which makes it well-suited to use in compact, space-limited applications. Furthermore, T540D687K003AH8605 capacitors feature high capacitance values (between 0.1μF and 10μF) and a high energy density, making them suitable for applications that require large amounts of capacitance in a small package. Additionally, Tantalum-Polymers provide excellent performance over a wide range of temperature, frequencies and voltages, and they can operate over a broad voltage range of 6V—10V. Furthermore, these capacitors are extremely reliable, as they are resistant to shock and vibration, and their life expectancy is greater than other capacitor types.

Disadvantages

Despite all their advantages, the T540D687K003AH8605 capacitors also have some drawbacks. First, they are costlier than other capacitor types, although they may be worth the expense due to their outstanding performance. Additionally, they exhibit a high self-discharge rate, which means that they slowly lose their charge over time even when there is no external voltage applied. Furthermore, these capacitors are generally not reversible, so they cannot be connected in parallel to increase capacity. Finally, the T540D687K003AH8605 capacitors can be damaged by overvoltage (above the rated voltage) or overcurrent situations, or they can be destroyed by reverse polarity.As can be seen, the T540D687K003AH8605 Tantalum-Polymer capacitor offers impressive performance and reliability with its robust construction and multiple advantages. Despite the disadvantages due to their higher cost, careful installation and monitoring can help maximize the lifespan of these capacitors. This makes them a highly useful and effective component for any design and application requirement.

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