This guide details Vishay Sprague polymer tantalum chip capacitors (types T52-T59), covering construction, specifications, and packaging dimensions.
This document serves as a technical guide for Vishay Sprague's line of tantalum solid electrolyte chip capacitors featuring a polymer cathode. It explains the fundamental properties of tantalum capacitors, comparing their dielectric constants to other materials like aluminum oxide and ceramic. The text highlights that these components are preferred for applications requiring high volumetric efficiency, stability at elevated temperatures, and long service life in surface mount assembly technology.
The guide provides specific details on several molded case series, including the T55 type with its epoxy encapsulation and various termination finishes, as well as leadframeless low-profile types (T52, T58, T59, T54). Technical specifications for capacitance ranges, voltage ratings, temperature limits (-55°C to +105°C or +125°C), and equivalent series resistance (ESR) are listed for each model. Additionally, the document includes plastic tape and reel packaging dimensions for the T55 type.
| Temperature Range (T55) | -55 °C to +105 °C |
|---|---|
| Capacitance Range (T55) | 3.3 μF to 1000 μF |
| Voltage Range (T55) | 2.5 V to 63 V |
| Capacitance Tolerance (T55/T58/T59/T54) | ± 20 % |
| Leakage Current (T55) | 0.1 CV |
| Dissipation Factor (T55) | 8 % to 10 % |
| ESR (T55) | 12 mΩ to 500 mΩ |
The dielectric constant of tantalum pentoxide is 26, which is approximately three times greater than that of aluminum oxide.
The available case sizes for T55 molded case polymer capacitors include J, P, A, T, B, Z, V, and D.
The leakage current specification for T55 capacitors is 0.1 CV.