电容寿命估算
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Where :L=Assured lifetime(hours);This has been prescribed in the catalogs or product specifications.
额定寿命。
一般在规格书或目录中有描述To=Maximum rated operating temperature(°C) of the capacitor.电容最高使用温度,即额定温度T=Actual operating temperature(°C) which the capacitor is used at.电容在电路中实际使用时的温度
△T=An increase(deg) in core temperature produced by internal heating due to actual operating ri 实际纹波电流产生的温升
SMD
Radial
CapXon
Radial SS,ST,SA,SP,SM,SH
SD,SN,SB,SZ,SY,GS,GW,NP,NK,BP,SW,SR,RW,NR,LR 2^(-△T)/10
2^(△To-△T) / 5
KM (≦100V), KW (≦100V
(≦100V), KZ, GF, GH, LZ, FH, KH (≦
100V), TH (≦100V), TE
EV,LV,HV,JV,MV,NV,
Lx = Lo x 2^(To-Tx)/10 x Kripple
Series
Kripple
Type Products
△To=Inside temperature increase of capacitor by permissible ripple current at the maximum oper 电容最大允许温升
Io=Rated maximum permissible ripple current(Arms).
最大允许的纹波电流,即电容额定纹波电流
Ix=Operating ripple current(Arms) actually flowing into a capacitors.
实际电路纹波电流
ΔT= ΔTo [( Ix / (Io*Fre multiplier)]^2 = Kc * (Ts-Tx)
Tx=Ts- (ΔT/Kc)
Diameter (mm)K C
5 1.1
duct specifications. 6.3 1.1
8 1.1
10 1.15
12.5 1.2
16 1.25
18 1.3
eating due to actual operating ripple current.22 1.35
25 1.4
ple current at the maximum operating temperature30 1.5
35 1.65
40 1.75
50 1.9
63.5 2.2
76 2.5
89 2.8
100 3.1。