B43540A2397M2

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In - 3 Lead
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.260" (32.00mm)
Size / Dimension:	0.984" Dia (25.00mm)
Lead Spacing:	0.394" (10.00mm)
Impedance:	290 mOhms
Ripple Current @ Low Frequency:	1.81A @ 100Hz
Applications:	General Purpose
Ratings:	--
Series:	B43540
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	10000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	230 mOhm @ 100Hz
Voltage - Rated:	200V
Tolerance:	±20%
Capacitance:	390µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, also known as “elecrolytic capacitors” or simply “electrolytic caps”, are voltage-stabilizing components commonly used in electronic circuits. These capacitors are based on the principle of an electrolytic separator, where two electrodes are immersed in an ionizable material. This material allows electrons to move back and forth between the two electrodes, allowing for the creation of a capacitor.Unlike conventional capacitors, aluminum electrolytic capacitors are polarized, meaning that they must be connected correctly in order to work. The positive terminal of the capacitor must be connected to the higher voltage, while the negative terminal of the capacitor must be connected to the lower voltage in order for the capacitor to function properly.

Types of Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors come in a wide variety of shapes and sizes, ranging from ultra-small SMD (Surface Mount Device) capacitors to large, cylindrical chassis mounts. They are typically classified by their capacitance, voltage ratings, temperature ratings, and tolerance ratings.The most common types of aluminum electrolytic capacitors are:

• Standard Polarized Aluminum Electrolytic Capacitors (SPE): Standard Polarized Electrolytic (SPE) capacitors are the most common type of aluminum electrolytic capacitor. They are used in power supply filters, audio frequency circuits, video applications, and other high frequency circuits.
• Axial-Lead Aluminum Electrolytic Capacitors (ALEC): Axial-Lead Electrolytic (ALEC) capacitors are used in high frequency and very low inductance applications. They offer a low profile, high capacitance, and excellent electromagnetic interference (EMI) immunity.
• Molded Aluminum Electrolytic Capacitors (MEC): Molded Electrolytic (MEC) capacitors are another type of aluminum electrolytic capacitor, often used in low profile applications where space is limited. These capacitors can be designed with various heights, such as to fit in tight spaces, and offer excellent environmental protection.
• Reverse Polarity Aluminum Electrolytic Capacitors (RPEC): Reverse Polarity Electrolytic (RPEC) capacitors are designed for use in applications that require reverse polarity. They are often thinner than standard polarized electrolytic (SPE) capacitors, and offer excellent pulse durability.
• Solid Aluminum Electrolytic Capacitors (SEC): Solid Electrolytic (SEC) capacitors are typically used in high-temperature applications that require superior heat resistance. These capacitors are also very durable and resistant to environmental extremes.

B43540A2397M2 Application Field and Working Principle

The B43540A2397M2 is a solid aluminum electrolytic capacitor manufactured by TDK. This capacitor is designed for use in high temperature applications, such as power supplies, motor controls, and high voltage circuits. It can withstand temperatures up to +105°C.The B43540A2397M2 capacitor is an axial-lead aluminum electrolytic capacitor with reverse-polarity, meaning that the positive terminal must be connected to the higher voltage, and the negative terminal must be connected to the lower voltage in order for the capacitor to work correctly.The B43540A2397M2 capacitor offers an excellent capacitance-to-volume ratio which is ideal for low profile applications. It is rated for 6.8µF ±20% at 35V, making it suitable for many high-voltage and high-temperature applications.The B43540A2397M2 capacitor offers superior pulse handling capability and long life expectancy, and is especially well-suited for circuit designs that require a low ESR (Equivalent Series Resistance). The capacitor is also UL recognized, giving it added reliability and safety.

Conclusion

Aluminum electrolytic capacitors are an integral part of many electronic circuits. They are used for voltage-stabilizing, noise-reduction, and current-limiting applications, and are available in a variety of shapes and sizes, each offering different performance characteristics. The B43540A2397M2 is an axial-lead aluminum electrolytic capacitor with reverse-polarity, making it suitable for a wide range of high temperature and high voltage circuits.

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