A practical capacitor is a non-ideal component. Its circuit model contains series inductance (ESL) and series resistance (ESR). Although equivalent series resistance is often shown in circuit models as a constant value, it varies depending on operating conditions. ESR is resistance from a combination of energy loss mechanisms under specific operating conditions.
Tantalum, a key dielectric material for capacitors, is also considered a “strategic material” by the United States Defense Logistics Agency (DLA) because of its unique attributes. This article addresses the unique supply chain for tantalum capacitors that carry a military specification.
TDK Corporation presents the new EPCOS aluminum electrolytic capacitor series B43548* with snap-in terminals. The capacitors feature an excellent maximum ripple current capability of 9.80 A (400 V, 100 Hz, 60 °C). This makes them ideal for demanding applications in power electronics.
The majority of tantalum capacitors used today are based on a solid electrolyte cathode system, and there have been many advancements in technology to enable smaller sizes, increased capacitance, and lower equivalent series resistance (ESR). Due to the relatively large market size and multiple suppliers, product improvements and new products are regularly reported and introduced to customers worldwide.
Organic Capacitor (KO-CAP) is a solid electrolytic capacitor with a conductive polymer cathode capable of delivering ultra low ESR and improved capacitance retention at high frequencies. KO-CAP combines the low ESR of multilayer ceramic, the high capacitance of aluminum electrolytic, and the volumetric efficiency of tantalum into a single surface mount package.
Capacitors are one of the fundamental building blocks of electrical circuits. Whether they are being used for energy storage, noise filtering, or timing/frequency design, capacitors are important in many common electrical devices.
Power management in space applications is related with multiple critical functions as energy storage, conditioning its distribution and conversion from higher to lower levels, feeding all kinds of electronic modules in equipment’s that can be integrated in a launcher (with short duration usage) up to probes or space stations ( with decades of usage).
The tantalum polymer SMD are solid-state capacitors that demonstrate no wear out mechanism when operated within their recommended guidelines. Unlike their MnO2 counterparts, polymer capacitors don’t need to be derated as aggressively. Under most conditions of consumer electronics devices, polymer capacitors only need about 10% derating.