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593D Datasheet(PDF) 8 Page - Vishay Siliconix |
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593D Datasheet(HTML) 8 Page - Vishay Siliconix |
8 / 11 page www.vishay.com 593D Vishay Sprague Document Number 40005 Revision 01-Mar-04 34 For technical questions, contact tantalum@vishay.com 12. Shock Test: 12.1 Capacitors shall be rigidly mounted by means of suitable brackets. The test load shall be distributed uniformly on the test platform to minimize the effects of unbalanced loads. 12.1.1 Test equipment shall be adjusted to produce a shock of 100 g peak with the duration of 6 mS and sawtooth waveform at a velocity change of 9.7 ft./sec. 12.2 Capacitors shall be subjected to 3 shocks applied in each of 3 directions corresponding to the 3 mutually perpendicular axes of the capacitors. 12.3 Rated DC voltage shall be applied during test. 12.3.1 An oscilloscope or other comparable means shall be used in determining electrical intermittency during tests. The replacement voltage applied shall not exceed 2 volts rms. 12.4 Electrical tests shall show no evidence of intermittent contacts, open circuits or short circuits during these tests. 12.5 There shall be no mechanical damage to these capacitors as a result of these tests. 12.6 Following the shock test, capacitors shall meet the original limits for capacitance, dissipation factor and l leakage current. 13. Moisture Resistance: 13.1 Capacitors shall be subjected to temperature cycling at 90% to 95% relative humidity, from + 25°C to +65°C to + 25°C (+ 10°C, - 2°C) over a period of 8 hours per cycle for 1000 hours. 13.2 Following the moisture resistance test, the leakage current and dissipation factor shall meet the initial requirements, and the change in capacitance shall not exceed ± 10%. 14. Thermal Shock: 14.1 Capacitors shall be conditioned prior to temperature cycling for 15 minutes at + 25°C, at less than 50% relative humidity and a barometric pressure at 28 to 31" 14.2 Capacitors shall be subjected to thermal shock in a cycle of exposure to ambient air at : - 55°C (+ 0°C,- 5°C) for 30 minutes, then PERFORMANCE CHARACTERISTICS (Continued) + 25°C (+10°C, - 5°C) for 5 minutes, then + 125°C (+ 3°C, - 0°C) for 30 minutes, then + 25°C (+ 10°C, - 5°C) for 5 minutes for 5 cycles. 14.3 Capacitors shall show no evidence of harmful or extensive corrosion, obliteration of marking or other visible damage. 14.4 Following the thermal shock test, capacitors shall meet the original requirements for leakage current and dissipation factor. Capacitance change shall not exceed ± 5% of the original measured value. 15. Soldering Compatibility: 15.1 Resistance to Solder Heat: Capacitors will withstand exposure to + 260°C + 5°C for 10 seconds. 15.1.1 Following the resistance to soldering heat test, capacitance, dissipation factor and DC leakage current shall meet the initial requirement. 15.2 Solderability: Capacitors will meet the solderability requirements of ANSI/J-STD-002, Test B (MIL-STD- 202, method and test S.) 16. Terminal Strength: Per UEC-384-3, minimum of 5N shear force. 17. Environmental: Mercury, CFC and ODS materials are not used in the manufacture of these capacitors. 18. Flammability: Encapsulant materials meet UL94 V0 with an oxygen index of 32%. 19. Capacitor Failure Mode: The predominant failure mode for solid tantalum capacitors is increased leakage current resulting in a shorted circuit. Capaci- tor failure may result from excess forward or reverse DC voltage, surge current, ripple current, thermal shock or excessive temperature. The increase in leakage is caused by a breakdown of the Ta 2O5 dielectric. For additional information on leakage failure of solid tantalum chip capacitors, refer to Vishay Sprague Technical Paper, “Leakage Failure Mode in Solid Tantalum Chip Capacitors.” 20. Surge Current: All C, D and E case code 593D capacitors are 100% surge current tested at + 25°C and rated voltage. The total series circuit resistance is 0.5 ohms. Each charge cycle of 0.10 seconds is followed by a discharge cycle of 0.10 seconds. Three surge cycles are applied. Each capacitor is tested individually to maximize the peak charging current. |
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