Zakładka z wyszukiwarką danych komponentów |
|
SA102C331KAR Arkusz danych(PDF) 7 Page - AVX Corporation |
|
SA102C331KAR Arkusz danych(HTML) 7 Page - AVX Corporation |
7 / 84 page 6 The Capacitor 25% 50% 75% 100% Percent Rated Volts 2.5 0 -2.5 -5 -7.5 -10 0VDC RVDC -55 -35 -15 +5 +25 +45 +65 +85 +105 +125 Temperature Degrees Centigrade +20 +10 0 -10 -20 -30 AVX C0G (NP0) T.C. AVX X7R T.C. 1 10 100 1 10 100 1 KHz KHz KHz MHz MHz MHz GHz Frequency 0 -10 -20 -30 AVX C0G (NP0) T.C. AVX X7R T.C. 1 10 100 1 10 100 1 KHz KHz KHz MHz MHz MHz GHz Frequency 2000 1600 1200 800 400 0 Figure 4 Figure 5 Figure 6 Figure 7 Cap. Change vs. D.C. Volts AVX X7R T.C. “Q” vs. Frequency Typical Cap. Change vs. Temperature AVX X7R T.C. Cap. Change vs. Frequency The effect of the application of DC voltage is shown in Figure 4. The voltage coefficient is more pronounced for higher K dielectrics. These figures are shown for room temperature conditions. The combination characteristic known as voltage temperature limits which shows the effects of rated voltage over the operating temperature range is shown in Figure 5 for the military BX characteristic. Effects of Frequency – Frequency affects capacitance and dissipation factor as shown in Figures 6 and 7. Variation of impedance with frequency is an important consideration for decoupling capacitor applications. Lead length, lead configuration and body size all affect the impedance level over more than ceramic formulation variations. (Figure 8) Effects of Time – Class 2 ceramic capacitors change capacitance and dissipation factor with time as well as temperature, voltage and frequency. This change with time is known as aging. Aging is caused by a gradual re-alignment of the crystalline structure of the ceramic and produces an exponential loss in capacitance and decrease in dissipation factor versus time. A typical curve of aging rate for semistable ceramics is shown in Figure 9 and a table is given showing the aging rates of various dielectrics. If a ceramic capacitor that has been sitting on the shelf for a period of time, is heated above its curie point, (125°C for 4 hours or 150°C for 1⁄2 hour will suffice) the part will de-age and return to its initial capacitance and dissipation factor readings. Because the capacitance changes rapidly, immediately after de- aging, the basic capacitance measurements are normally referred to a time period sometime after the de-aging process. Various manufacturers use different time bases but the most popular one is one day or twenty-four hours after “last heat.” Change in the aging curve can be caused by the application of voltage and other stresses. The possible changes in capacitance due to de-aging by heating the unit explain why capacitance changes are allowed after test, such as temperature cycling, moisture resistance, etc., in MIL specs. The application of high voltages such as dielectric withstanding voltages also tends to de-age capacitors and is why re-reading of capacitance after 12 or 24 hours is allowed in military specifications after dielectric strength tests have been performed. |
Podobny numer części - SA102C331KAR |
|
Podobny opis - SA102C331KAR |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |