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T550B107K040AT4251 Datasheet(PDF) 7 Page - Kemet Corporation |
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T550B107K040AT4251 Datasheet(HTML) 7 Page - Kemet Corporation |
7 / 12 page © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com T2059_T550 • 6/23/2016 77 Tantalum Through-Hole Capacitors – Hermetically Sealed T550 Axial Polymer Hermetic Seal (PHS) 105ºC and DLA Series Recommended Voltage Derating Guidelines -55°C to 85°C 85°C to 105°C % Change in Working DC Voltage with Temperature VR 78% of VR Recommended Maximum Application Voltage (As % of Rated Voltage) 80% of VR 63% of VR Ripple Current/Ripple Voltage Permissible AC ripple voltage and current are related to equivalent series resistance (ESR) and the power dissipation capabilities of the device. Permissible AC ripple voltage that may be applied is limited by two criteria: 1. The positive peak AC voltage plus the DC bias voltage, if any, must not exceed the DC voltage rating of the capacitor. 2.ThenegativepeakACvoltageincombinationwithbiasvoltage,ifany,mustnotexceedtheallowablelimitsspecifiedforreverse voltage. The maximum power dissipation by case size can be determined using the below left table. The maximum power dissipation rating stated in the table must be reduced with increasing environmental operating temperatures. Refer to the below right table for temperature compensation requirements. Case Code Maximum Power Dissipation (P max) mWatts at 25°C with +60°C Rise KEMET MIL–PRF–39006/22/ 25/30/31 Case Size B T2 715 Temperature Compensation Multipliers for Maximum Power Dissipation (P max) T≤45°C 45°C<T≤85°C 85°C<T≤105°C 1.00 0.50 0.10 T= Environmental Temperature Using the P max of the device, the maximum allowable rms ripple current or voltage may be determined. I(max) = √Pmax/R E(max) = Z √Pmax/R I = rms ripple current (amperes) E = rms ripple voltage (volts) P max = maximum power dissipation (watts) R = ESR at specified frequency (ohms) Z = Impedance at specified frequency (ohms) The maximum power dissipation rating must be reduced with increasing environmental operating temperatures. Refer to the Temperature Compensation Multiplier table for details. 0% 20% 40% 60% 80% 100% 120% -55 25 45 85 105 Temperature (°C) % Change in Working DC Voltage with Temperature Recommended Maximum Application Voltage (As % of Rated Voltage) 80% 78% 63% |
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