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135D156X0035C2 Datasheet(PDF) 11 Page - Vishay Siliconix |
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135D156X0035C2 Datasheet(HTML) 11 Page - Vishay Siliconix |
11 / 14 page 135D www.vishay.com Vishay Revision: 09-Apr-13 11 Document Number: 40024 For technical questions, contact: tantalum@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Verifying that the 40 kHz rating does not exceed the peak voltage limitations: where: and: thus: Therefore the impressed voltage is: and: Therefore, if the capacitor is biased between - 1.41 VDC and + 6.41 VDC , it can withstand the rated ripple current, which is based only on the maximum allowable power dissipation. 3. Ripple Current Multipliers: The “Standard and Extended Ratings” tables list the maximum permissible RMS ripple current at 40 kHz for each rating. These values arebased on the maximum power dissipation allowed at that frequency. This ripple current, will cause heating, which adds to the ambient temperature. The higher ambient temperatures, voltage derating or current derating is required (see “Ripple Current Multipliers” tables). Also shown are the multipliers for ripple currents at various requencies, caused by the frequency dependence of the (ESR) equivalent series resistance. (see “Typical ESR as a Function of Frequency” chart) I rated 0.820 A RMS = I pp rated 0.820 x 2 2 2.32 A pp = = Z C (40 kHz) ESR 40 kHz 2 + (X C(40 Hz) 2 = ESR 40 kHz 4 120 Hz x 0.34 = from Extended Ratings table) 1.36 = X C (40 kHz) 1 2 fC ------------- = 1 2 x 40 x 10 3 x 25 x 10 -6 ------------------------------------------------------------------------------- 0.159 = = Z C 40kHz 1.36 2 + 0.159 2 1.37 = = V Cpp Z Cpp Ipp 1.37 x 2.32 A pp 3.18 V pp = = = 3.18 V 11 V TYP. ESR AS A FUNCTION OF FREQUENCY 0 0.2 0.6 0.8 0.4 1.4 1.2 1.0 FREQUENCY (Hz) 10 100 1K 40K 100K 10K 1M RIPPLE CURRENT MULTIPLIERS (120 Hz to 1 kHz) % OF + 85 °C RATED PEAK VOLTAGE RIPPLE CURRENT MULTIPLIERS 120 Hz 800 Hz 1 kHz - 55 °C + 85 °C + 125 °C - 55 °C + 85 °C + 125 °C - 55 °C + 85 °C + 125 °C 100 0.60 0.39 - 0.71 0.43 - 0.72 0.45 - 90 0.60 0.46 - 0.71 0.55 - 0.72 0.55 - 80 0.60 0.52 - 0.71 0.62 - 0.72 0.62 - 70 0.60 0.58 - 0.71 0.69 - 0.72 0.70 - 67 0.60 0.60 0.27 0.71 0.71 0.32 0.72 0.72 0.32 RIPPLE CURRENT MULTIPLIERS (10 kHz to 100 kHz) % OF + 85 °C RATED PEAK VOLTAGE RIPPLE CURRENT MULTIPLIERS 10 kHz 40 kHz 100 kHz - 55 °C + 85 °C + 125 °C - 55 °C + 85 °C + 125 °C - 55 °C + 85 °C + 125 °C 100 0.88 0.55 - 1.0 0.63 - 1.1 0.69 - 90 0.88 0.67 - 1.0 0.77 - 1.1 0.85 - 80 0.88 0.76 - 1.0 0.87 - 1.1 0.96 - 70 0.88 0.85 - 1.0 0.97 - 1.1 1.07 - 67 0.88 0.88 0.40 1.0 1.0 0.45 1.1 1.1 0.50 |
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