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Capacitor Life Calculators
(温度≤105℃;WV≥160)
(温度≤105℃;WV≥160)
Online Life Calculator
Value
(uF)
V
o
(rated)
V
x
(Actual)
Series
Dimension case
Freq Coeff. F
Rated temp
Rated Life
Rated ripple current
Actual ripple current
Ambient temp
Apply Ix Temp Rise
LIFE EXPECTED
D
(mm)
L
(mm)
T
o
(deg C)
L
r
(Hours)
I
o
(Arms)
I
x
(Arms)
T
x
(deg C)
△T
x
(deg C)
L
x
(Hours)
L
x
(Years)
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計算公式
L_x = L_r \times 2^{\frac{(T_o-T_x)}{10}} \times 2^{\frac{-\triangle T_x}{5}} \times \left(V_0 / V_x\right)^{4.4} {\scriptsize (for ≧160wv)} \\ where \triangle Tx=\triangle T₀(Ix / I₀)²
L
r
Expected ripple life period (hrs) at maximum operating temperature allowed 在允許的最高使用溫度,印加額定電壓(DC)及額定紋波電流(AC) 之保証壽命
L
x
Expected life period (hrs) at actual operating temperature實際使用條件下的推算壽命
T
o
Maximum operating temperature (℃) allowed 允許的最高使用溫度(℃)
T
x
Actual operating ambient temperature (℃),calculate as 40℃ under 40℃。 實際使用的環境溫度(℃),低于40℃以40℃計算
I
x
Actual applied ripple current (mArms) at operating frequency f0 (Hz) 工作頻率 f0 (Hz) 下實際印加的濾波電流(mArms)
I
o
Rated maximum permissible ripple current IR(mArms) x frequency
multiplier (Cf) at f0 (Hz) 額定紋波電流(如目錄標示值),如果在不同使用頻率時,需乘以補 正系數
※ Ripple Current calculation: no need Temperature Multiplying Factor 濾波電流計算:不需溫度乘以因數
※ For Ripple life,Ix Should be 80% equal or more of Io,if less than 80%,
calculate with 80%. 紋波電流應該大于或者等于Io的80%,如果小於80%以80%計算
△T
o
≦5℃ Maximum temperature rise (℃) for applying I0 (mArms) 印加額定紋波電流時,電容所允許的溫升(小于或等于5℃)
V
o
Rated voltage(V) 額定工作電壓
V
x
Actual applied voltage(V),Vx Should be 80% equal or more of Vo 實際使用時印加在電容上的電壓,當Vx小於V0的80%時以80%計之
Note
The estimated life is limited to 15 years, if it exceeds 15 years, take 15 years as standard. 推算壽命以15年為上限,超過15年的以15年計之
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