Tantalum capacitors are often used when it is desirable to reduce the size of electronics components for any given capacitive value. This is due to the relatively small size in which capacitors are available and the large Capacitance-to-volume ratio it provides. They are also superior to other types of capacitors when high-temperature stability and reliability is required. The M39003/01-6015/HSD is a popular long-standing example of a tantalum capacitor.

Types of Tantalum Capacitors

Tantalum capacitors are categorized into two basic varieties: wet tantalum capacitors, and solid tantalum capacitors. The wet tantalum capacitor is the older type. It uses an activated manganese dioxide powder and a liquid conductive electrolyte. It is generally not suitable for high voltage or in applications where voltage fluctuates significantly, as it is prone to a phenomenon known as “electrolytic burnout”.

The solid tantalum capacitor is much more reliable and suitable for higher voltages. This type uses an anodic body and a sintered anode with a patented manganese-dioxide/conductive Polymer structure. Examples of this type include the M39003/01-6015/HSD.

M39003/01-6015/HSD Construction

The M39003/01-6015/HSD is a compact axial-lead surface mount tapped tantalum cap. It is built as a two-terminal device, typically with a cylindrical electrolytic body. Its anodic body is filled with pressurized electrolyte. Each unit is coated with an epoxy coating to protect against moisture. The construction of this tantalum capacitor is dust-proof to increase its life-span.

M39003/01-6015/HSD Application Fields

The M39003/01-6015/HSD is a general-purpose and low-profile axial-lead tapped SMD capacitors that are designed for use in moderate frequency power supply circuits. It works best in relatively low current applications, such as those found in portable electronics, automotive systems, and industrial machines. Examples of current applications for the M39003/01-6015/HSD include high frequency power supplies, motor controls, inverters, clocking logic, and automotive electrical systems.

M39003/01-6015/HSD Working Principle

The working principle of the M39003/01-6015/HSD is based on an electrochemical polarization process inside the anodic body that produces a charge-distribution pattern across the anode and cathode interfaces. This generates an electric field in the anodic body that opposes the electric field generated by the external voltage source. The capacitance of the M39003/01-6015/HSD is determined by the size of the anodic body and the amount of electrolyte contained therein. As the external voltage increases, the electrochemical reaction within the anodic body is intensified, resulting in a larger capacitance.

Conclusion

The M39003/01-6015/HSD is a widely used surface mount tapped tantalum capacitor that provides a high level of reliability and stability over a wide range of conditions. It is suitable for a variety of applications, from high frequency power supplies to automotive electrical systems. Its capacitance is modernized by an electrochemical reaction that occurs when an external voltage is applied, resulting in a substantial increase in its capacity.