M39003/01-8190H

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Tantalum capacitors are a form of electrolytic capacitors most commonly used in a wide range of applications. They are a polarized type of capacitor that use tantalum in the dielectric and exist in two different forms: solid and wet. A solid tantalum capacitor (also known as sintered tantalum capacitor) is made of a sintered tantalum pellet with internal solid electrolyte as its dielectric. A wet tantalum capacitor (also referred to as electrolytic or liquid tantalum capacitor) on the other hand uses a liquid electrolyte dielectric and typically consists of an etched, porous tantalum anode utilizing a sacrificial metal oxide cathode for construction. The M39003/01-8190H is a commercial-grade solid tantalum capacitor offering performance and reliability characteristics that are ideal for contractors seeking cost and performance in hazardous locations. It meets the requirements of military and commercial aircraft applications such as aircraft avionics electronics, avionics systems, military electronics, and aerospace control systems. Its operating temperature range is of -55°C to +125°C with an accelerated life test at +85°C. It is available in 25V to 50V capacitance range of 0.047µF to 220µF and in voltage ratings from 105°C to 10°C.

The M39003/01-8190H solid tantalum capacitor utilizes a proprietary design which provides for enhanced performance characteristics in high frequency and harsh environmental applications. This device offers low ESR and high current capacity and can maintain its full rated current even when exposed to high temperatures. The construction is based on a tantalum pellet that is press fit into a metal can or steel case with an etched and sintered anode. The pellet is pressed in a cantilever manner enabling the capacitor body to be rigid and thereby avoiding any arcing and electrical contact problems. The cantilever design also provides exceptional mechanical shock and vibration resistance. The anode and tantalum pellet are loaded with a manganese dioxide containing electrolyte for conduction and a hermetic seal is used to provide physical protection of the electrolyte and current carrying dielectric layer.

The working principle of the M39003/01-8190H solid tantalum capacitor is simple. The capacitor acts as a semiconductor device, in this case a motor or transistor. When an electrical signal is applied across the terminals, positive and negative charges collect on the capacitor’s opposite electrodes. This separation of charge occurs due to the presence of dielectric between the electrodes. The electric field created by the charged particles causes changes in the flow of current in the conductor. This establishes a current between the two electrodes, forming an “RC” circuit. The RC circuit has two distinct properties: capacitance and impedance. The capacitance is the ratio of charge collected on the capacitor to the potential difference across the terminals. The impedance is the ratio of voltage across terminals to the current through the capacitor. These properties are determined by the amount of dielectric material, the system working frequency, the capacitor’s electrical size and shape.

The M39003/01-8190H is widely used in demanding applications such as high frequency communication, power supplies, instrumentation, medical systems, avionic systems and aerospace control systems. The capacitors are specifically designed to meet the stringent requirements of military and commercial aerospace customers and the performance, reliability, and cost make it an ideal choice for even the most demanding applications. The low ESR characteristics offer excellent surge performance, providing superior ripple with no inductive behavior, long life reliability and improved performance at high frequencies.

The M39003/01-8190H solid tantalum capacitor is an excellent choice for contractors seeking durability, reliability and performance in hazardous locations. The device offers superior performance and reliability characteristics that are ideal for aircraft avionics, military electronics and aerospace control systems. With its working principle, construction and application field, the M39003/01-8190H solid tantalum capacitors provide an exceptional level of performance for a wide range of challenging environments.

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