Solid Tantalum Electrolytic Capacitors – F91 and F92 Series Overview
The F91 and F92 series from Nichicon are resin-molded chip solid tantalum electrolytic capacitors designed for surface mount applications and are compliant with the RoHS directive. These capacitors are suited for high-frequency applications within a temperature range of -55°C to +125°C and feature a low equivalent series resistance (ESR).
Performance Characteristics
The capacitors come in various standard ratings with capacitance values as per the series specification and a voltage rating that accommodates applications up to 125°C. Key performance characteristics of the series include:
- Capacitance tolerance of ±20%, ±10% at 120Hz
- Leakage current parameters with specific limits after a minute’s application of rated and derated voltages
- Capacitance change within specified ranges according to temperature and operational stress
- Damp heat, temperature cycles, and endurance testing with minimal changes to the capacitance, dissipation factor, and leakage current
- Soldering heat resistance with exposure to 260°C and the ability to retain initial specified characteristics
Mechanical and Environmental Testing
The F91 and F92 series have passed rigorous mechanical and environmental testing ensuring reliability under various stress conditions, including:
- Damp heat exposure without voltage application resulting in minimal change to capacitance and initial specified values for dissipation factor and leakage current
- Resistance to temperature cycles with slight capacitance change and maintenance of initial dissipation and leakage current values
- Surge voltage endurance and operational lifetime tests at 85°C and 125°C
- Shear and terminal strength tests ensuring robustness of the capacitor terminals during and after mounting
Type Numbering System
The F91 and F92 series follow a structured type numbering system to specify capacitance, voltage rating, and size, enabling easy identification and selection for various applications. Details regarding the taping code, specific values for ESR, dissipation factors, and other specifications are available on additional pages.
Important Notes
For applications involving series still under development, Nichicon advises contacting their local sales office. Furthermore, details about the surge and derated voltage at 125°C can be referenced on a specified page.
References:
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