Electronic Components Datasheet Search |
|
MKP385 Datasheet(PDF) 10 Page - Vishay Siliconix |
|
MKP385 Datasheet(HTML) 10 Page - Vishay Siliconix |
10 / 15 page MKP 385 Vishay BCcomponents AC and Pulse Metallized Polypropylene Film Capacitors MKP Radial Potted Type www.vishay.com For technical questions, contact: dc-film@vishay.com Document Number: 28152 168 Revision: 13-Oct-08 APPLICATION NOTE AND LIMITING CONDITIONS These capacitors are not suitable for mains applications as across-the-line capacitors without additional protection, as described hereunder. These mains applications are strictly regulated in safety standards and therefore electromagnetic interference suppression capacitors conforming the standards must be used. To select the capacitor for a certain application, the following conditions must be checked: 1. The peak voltage (Up) shall not be greater than the rated DC voltage (URdc) 2. The peak-to-peak voltage (Up-p) shall not be greater than the maximum (Up-p) to avoid the ionisation inception level 3. The voltage peak slope (dU/dt) shall not exceed the rated voltage pulse slope in an RC-circuit at rated voltage and without ringing. If the pulse voltage is lower than the rated DC voltage, the rated voltage pulse slope may be multiplied by URdc and divided by the applied voltage. For all other pulses following equation must be fulfilled: T is the pulse duration 4. The maximum component surface temperature rise must be lower than the limits (see figure max allowed component temp rise) 5. Since in circuits used at voltages over 280 V peak-to-peak the risk for an intrinsically active flammability after a capacitor breakdown (short circuit) increases, it is recommended that the power to the component is limited to 100 times the values mentioned in the table: “Heat conductivity” 6. When using these capacitors as across-the-line capacitor in the input filter for mains applications or as series connected with an impedance to the mains the applicant must guarantee that the following conditions are fulfilled in any case (spikes and surge voltages from the mains included). Voltage Conditions for 6 Above EXAMPLE C = 4n7 1600 V used for the voltage signal shown in next figure. Up-p = 1000 V; Up = 900 V; T1 = 12 µs; T2 = 64 µs; T3 = 4 µs The ambient temperature is 80 °C. In case of failure, the oscillation is blocked. Checking the conditions: 1. The peak voltage Up = 900 V is lower than 1600 Vdc 2. The peak-to-peak voltage 1000 V is lower than 2 √2 x 550 Vac = 1600 U p-p 3. The voltage pulse slope dU/dt = 1000 V/4 µs = 250 V/µs. This is lower than 4000 V/µs (see specific reference data for each version) 4. The dissipated power is 35 mW as calculated with Fourier terms and typical tgd. The temperature rise for wmax. = 6.0 and pitch = 10 mm will be 35 mW/9 mW/°C = 3.9 °C This is lower than 10 °C temperature rise at 80 °C, acc. figure. 5. Oscillation is blocked 6. Not applicable Voltage signal: 2 ×⌠⎛dU⎞ 2 ⌡⎝ dt ⎠ × dt < U Rdc × T 0 ⎛dU⎞ ⎝ dt ⎠ rated ALLOWED VOLTAGES Tamb ≤ 85 °C 85 °C < Tamb ≤ 110 °C 110 °C < Tamb ≤ 125 °C Maximum continuous RMS voltage URac 0.7 x URac 0.5 x URac Maximum temporary RMS-overvoltage (< 24 h) 1.25 x URac 0.875 x URac 0.625 x URac Maximum peak voltage (Vo-p) (< 2 s) 1.6 x URdc 1.1 x URdc 0.8 x URdc Voltage Up T3 T1 T2 Up-p Time |
Similar Part No. - MKP385_08 |
|
Similar Description - MKP385_08 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |