- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382885 > CK2E221KR (DB Lectro Inc.) CHIP TYPE, WIDE TEMPERATURE RANGE PDF資料下載
參數(shù)資料
| 型號(hào)： | CK2E221KR |
| 廠商： | DB Lectro Inc. |
| 英文描述： | CHIP TYPE, WIDE TEMPERATURE RANGE |
| 中文描述： | 芯片類型，寬溫 |
| 文件頁(yè)數(shù)： | 13/13頁(yè) |
| 文件大?。?/td> | 445K |
| 代理商： | CK2E221KR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)當(dāng)前第13頁(yè)
LIFE OF ALUMINUM ELECTROLYTIC CAPACITORS
The life of aluminum electrolytic capacitors is mainly dependent on environmental conditions (e.g.
ambient temperature, humidity etc.) and electrical factors (e.g. operating temperature, ripple current
etc.) Generally, the wear-out mechanism of aluminum electrolytic capacitors is based on evaporation
of electrolyte through the rubber seal. Consequently, the factor of temperature (ambient temperature
and internal heating due to ripple current) is the most critical to electrolytic capacitors life. The effect of
voltage on capacitor life is negligible, especially for low voltage electrolytic capacitors. The lifetime of
aluminum electrolytic capacitors can be expressed as following equations:
L
e
= L
o
x
K
t
x
K
r
-------- (1)
Where:
L
e
= Expected life at operating temperature T
e
(h)
L
o
= Specified life at temperature operating temperature T
o
(h)
K
t
= Ambient temperature acceleration term
K
r
= Ripple current acceleration term
K
t
= L
o
x
A -------- (2)
o
e
Where:
T
o
= Maximum rated operating temperature (
q
C)
T
e
= Actual ambient temperature (
q
C)
A = Acceleration coefficient (for the range from 35
q
C to the maximum operating temperature,
A
|
2)
K
r
= 2 -------- (3)
Where:
'
T = An increase in core temperature by internal heating due to ripple current
(
'
T = core temperature – ambient temperature)
'
T can be estimated as follows:
'
T = (I
2
x
R)/(
E x
S) -------- (4)
Where:
I = Ripple current of the capacitor (A rms)
R = Equivalent series resistance of the capacitor (
:
)
E
= Heat radiation coefficient of the aluminum can (W/
q
C
x
cm
2
)
S = Surface area of the capacitor (cm
2
)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CK2E221KT | CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221LC | CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221LR | CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221LT | CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221MC | CHIP TYPE, WIDE TEMPERATURE RANGE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CK2E221KT | 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221LC | 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221LR | 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221LT | 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:CHIP TYPE, WIDE TEMPERATURE RANGE |
| CK2E221MC | 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:CHIP TYPE, WIDE TEMPERATURE RANGE |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。