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MULTILAYER CERAMIC CAPACITORS

額定電壓
Rated voltage DF spec. 容值 頻率 電壓
Capacitance Frequency Voltage
50V ≦6.0% (Tanδ≦0.06)
Y5V 25V ≦8.0% (Tanδ≦0.08) ≦10uF 1KHz±10% 1.0±0.2Vrms
＞10uF
120Hz±20%
1.0±0.2Vrms
16V ≦10.0% (Tanδ≦0.10)
10V ≦12.5% (Tanδ≦0.125) 150℃/1 小時烘烤後靜置 24 小時，在環境溫度 25
度下測試
6.3V ≦15.0% (Tanδ≦0.15)
(at 25℃,24 hrs after annealing)

7.3 絕緣阻抗 (Insulation Resistance , IR)
電介質(Dielectrics) 判定標準(Specification) 測試條件(Testing Condition)
NPO IR≧10GΩ or R x C≧500MΩ*u F 在 25℃下，使用額定電壓測試 60±5 秒。
以較小者為標準(Whichever is smaller) (Rated voltage for 60±5secs ,at 25℃)
X7R/X5R/X6S/ IR≧1GΩ or R x C≧100MΩ*u F
X7T/X7S//Y5V 以較小者為標準(Whichever is smaller)
7.4 耐電壓 (Dielectric Strength, Flash)

電介質(Dielectrics) 判定標準(Specification) 測試條件(Testing Condition)
NPO 外觀無明顯破損或能通過高壓測 Class 1 電容用 3 倍額定電壓，Class 2 用 2.5 倍，持續 1 到 5 秒，
X7R/X5R/X6S/ 試(No remarkable visual 充放電流小於 50 毫安培，此條件只適用於額定電壓小於 200 伏
X7T/X7S/Y5V damage or flash over during 之電容(300% of rated voltage for class 1 capacitors, and 250% of rated
test) voltage for class 2 capacitors. Duration of application: 1 to 5 seconds.
Charging and discharging current less than 50mA. This condition is
suitable to rated voltages no greater than 200V.)
NPO 外觀無明顯破損或能通過高 額定電壓為 500V，用 2 倍的額定電壓持續 1 到 5 秒。
X7R 壓測試(No remarkable visual (500V – 200% of rated voltage for 1 to 5 Seconds.)
X7T damage or flash over during 額定電壓為 1000V，用 1.2 倍的額定電壓持續 1 到 5 秒。
test) (1000V - 120% of rated voltage for 1 to 5 Seconds.)
額定電壓大於 2000V，用 1 倍的額定電壓持續 1 到 5 秒。
(2000V or above – 100% of rated voltage for 1 to 5 Seconds.)
7.5 容值與直流電的關係 (DC Voltage Coefficients)

X7R/X5R、X6S、X7T 和 Y5V 材質電容 (NPO 除外)對直流電敏感，此類電容於直流加壓下使用時會產生介電常數降
低現象，電壓越大現樣越明顯，進而導致有電容值降低的結果發生，此為俗稱 DC bias 效應，特別是介電常數越大，
容值降低的越嚴重。產生原因為直流電壓阻礙介電陶磁體偏極化效應，而造成介電常數降低的現象。
The materials X7R/X5R, Y5V (except NPO) are sensitive to DC voltage. In all cases an eventual decrease in dielectric constant
occurs with DC bias, which is more severe with dielectrics of higher dielectric constant. This behavior is attributed to a constraint of
the DC voltage on the response of the polarizing mechanisms, which give rise to the dielectric constant of the material.

△Cp (%)
10
0 NPO
–10
–20
–30 X7R/X5R
–40
–50 Y5V
–60
10 20 30 40 50 60 70 80 90 100 110 VDC /mil
7.6 DF 與交流電電壓的關係 (AC Voltage Coefficients)

X7R/X5R、X6S、X7T、X7S 和 Y5V 材質電容(NPO 除外)於交流電下使用時，其散逸因素會增加，且介電常數越大
越明顯，如下圖所示。電容的層疊結構是由極薄的電極組成，要防止在高壓和高流的電路中使用，因為 電壓大於

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(2016/08/10 revised)