SOLID TANTALUM ELECTROLYTIC CAPACITORS F91 Series Datasheet

Category: Capacitors, Electronics, Nichicon America Corporation

Introduction

The datasheet provides detailed specifications for the SOLID TANTALUM ELECTROLYTIC CAPACITORS F91 Series, which are resin-molded chip capacitors designed for surface-mounted device (SMD) applications, particularly suited for high-frequency environments. These capacitors are also compliant with the RoHS directive (2002/95/EC).

Performance Characteristics

The F91 series capacitors operate within a temperature range of -55 to +125°C, with a rated temperature of +85°C. Capacitance tolerance is specified at ±20% or ±10% at 120Hz. The datasheet references tables for both Dissipation Factor (at 120Hz) and Equivalent Series Resistance (ESR at 100kHz), but the actual values are found on subsequent pages beyond the first two.

The leakage current characteristics vary with temperature:

– At 20°C, leakage current is not more than 0.01CV or 5µA after a minute’s application of rated voltage.

– At 85°C, leakage current does not exceed 0.1CV or 5µA.

– At 125°C with derated voltage, the leakage current is limited to 1.25CV or 3µA.

Stability and Reliability Tests

Caps on capacitance change with temperature and during moisture exposure are as follows:

– Max 15% at 125°C

– User-derated change of 10% is allowed at +85°C.

The capacitors also undergo damp heat testing (40°C, 90% to 95% RH for 500 hours without voltage applied), temperature cycles (five cycles from -55°C to +125°C), and soldering heat resistance (solder immersion at 260°C for 10 seconds), demonstrating minimal changes in capacitance, dissipation factor, and leakage current post-testing.

Endurance and Mechanical Tests

For surge endurance, with applied rated voltage and derated voltage at 85°C connected in series with a 3Ω resistor, the capacitors are tested for 2000 hours. Similarly, at 125°C with 30Ω resistors, they are tested to match specific endurance criteria.

Through the shear test and terminal strength test, the datasheet establishes the robustness of the capacitor’s physical structure, ensuring no exfoliation or significant abnormalities are found after applying specific mechanical stresses.

Case Codes and Part Number System

Capacitors come with a defined case code system to specify physical dimensions. The ‘Type numbering system’ provides a method for identifying capacitors, such as the example code ‘100uF’ provided, with additional details found on other pages referenced. Various standard ratings for rated voltage, capacitance, and ESR are listed, laying out the options available within the F91 series.

Marking and Ordering

Finally, each capacitor is labeled with a unique part number that embeds information about capacitance tolerance and other specifications. A variety of standard ratings for capacitance, rated voltage, and ESR are listed to assist users in making the appropriate selection for their application needs.