SOLID TANTALUM ELECTROLYTIC CAPACITORS – Nichicon Low ESR F91 Series

Category: Capacitors, Electronics, Nichicon America Corporation

Overview

The datasheet presents detailed information about the Nichicon Low ESR F91 Series of solid tantalum electrolytic capacitors, which are designed primarily for surface-mounted applications demanding high-frequency and RoHS compliance. The series operates within a temperature range of -55 to +125°C, with a rated temperature of +85°C.

Performance Characteristics

Capacitors in this series demonstrate a capacitance tolerance of ±20% or ±10% at 120Hz. The datasheet specifies the dissipation factor for various part numbers at 120Hz and their equivalent series resistance (ESR) at 100kHz. Leakage current parameters are detailed for room temperature, 85°C, and 125°C conditions after applying rated and derated voltage conditions.

Environmental and Mechanical Testing

The capacitors are subjected to rigorous testing to ensure reliability under diverse conditions:

Temperature Cycling: Changes in capacitance, dissipation factor, and leakage current are described after exposure to temperature cycles between -55°C and +125°C.
Damp Heat Test: Performance post exposure to 90-95% relative humidity (RH) at 40°C for 500 hours without voltage applied is detailed.
Soldering Heat Resistance: Stability of electrical characteristics after being subjected to soldering heat is confirmed.
Surge: Stability of capacitor parameters after a high surge condition is tested.
Endurance: The capacitors withstand a long-term application of rated voltage at 85°C and derated voltage at 125°C. Their electrical characteristics after these tests are documented.

Mechanical Strength Testing

The shear test and terminal strength testing ensure resilience against mechanical stresses post mounting. The datasheet specifies dimensions for the shear test and the amount of force the capacitors can withstand without damage.

Product Identification and Packaging

A type numbering system is provided for easy identification of different capacitor values within the series. A table of standard ratings lists various part numbers with associated rated capacitance and voltage levels alongside package/case codes.

Special Considerations

Attention is drawn to surge and derated voltage considerations at higher temperatures, directing readers to further details provided on another page of the datasheet.

Conclusion

The F91 series offers a reliable and high-performance solution for SMD applications where low equivalent series resistance and compliance with environmental standards are essential.