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參數(shù)資料
| 型號： | T491C474M035AS |
| 廠商： | KEMET Corporation |
| 英文描述： | Surface Mount Capacitors |
| 中文描述： | 表面貼裝電容 |
| 文件頁數(shù)： | 60/100頁 |
| 文件大?。?/td> | 4351K |
| 代理商： | T491C474M035AS |
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Introduction
KEMET entered the world of aluminum capacitors with
the introduction of the AO-CAP, designated the A700
Series, which has been targeted for power management
applications. The structure of the AO-CAP uses alu-
minum as the anode material, aluminum oxide as the
dielectric, and a conductive organic polymer for its
counter-electrode material. The A700 series is 100%
screened for all electrical parameters: Capacitance @
120Hz, Dissipation Factor (DF) @ 120 Hz, ESR @ 100
kHz, and DC Leakage.
The AO-CAP offers many advantages including extreme-
ly low ESR, high capacitance retention at high operating
frequencies, no dry-out related failure mechanism and
no voltage de-rating up to125°C.
ELECTRICAL
1.
Operating Temperature Range
-55°C to +125°C
No derating with temperature is required.
2.
Non-Operating Temperature Range
-55°C to 125°C
3.
Capacitance and Tolerance
22μF to 470μF
±20% Tolerance
Capacitance is measured at 120 Hz, up to 1.0 volt
rms maximum and up to 2.5V DC maximum. DC
bias causes only a small reduction in capacitance,
up to about 2% when full rated voltage is applied.
DC bias is not commonly used for room temperature
measurements but is more commonly used when
measuring at temperature extremes.
Capacitance does decrease with increasing fre-
quency, but not nearly as much or as quickly as
standard tantalums. Figure 1 compares the frequen-
cy induced cap roll-off between the AO-CAP and tra-
ditional MnO
2
types. Capacitance also increases
with increasing temperature. See Section 12 for tem-
perature coefficients.
Figure 1.
4.
Voltage Ratings
2 - 10 VDC Rated Voltage
This is the maximum peak DC operating voltage
from -55°C to +125°C for continuous duty.
Surge Voltage Ratings
Surge voltage capability is demonstrated by applica-
tion of 1000 cycles of the relevant voltage at 25°C,
85°C, or 125 °C. The parts are charged through a 33
ohm resistor for 30 seconds and then discharged
through a 33 ohm resistor for 30 seconds for each
cycle.
Voltage Ratings Table 1
5.
Reverse Voltage Rating & Polarity
Aluminum polymer capacitors are polar devices and
may be permanently damaged or destroyed if con-
nected in the wrong polarity. The positive terminal is
identified by a laser-marked stripe. These capacitors
will withstand a certain degree of transient voltage
reversal for short periods as shown in the following
table. Please note that these parts may not be oper-
ated continuously in reverse, even within these limits.
Table 2
6.
DC Leakage Current
Because of the high conductivity of the polymer, the
AO-CAP family has higher leakage currents than tra-
ditional MnO
2
type Tantalum caps. The DC Leakage
limits at 25°C are calculated as 0.06 x C x V, (where
C is cap in μF and V is rated voltage in Volts) for
part types with rated voltage
≤
4V, and equals 0.04 x
C x V, for voltages > 4V. Limits for all part numbers
are listed in the ratings tables.
Rated
Voltage
-55°C to 125 °C
2V
2.5V
4V
6.3V
8V
10V
Surge
Voltage
2.6V
3.2V
5.2V
8V
10.4V
13V
Temperature Permissible Transient Reverse Voltage
25°C
60% of Rated Voltage
55°C
50% of Rated Voltage
85°C
40% of Rated Voltage
125°C
30% of Rated Voltage
KEMET Electronics Corporation, P.O. Box 5928, Greenville, S.C. 29606, (864) 963-6300
A
ALUMINUM ORGANIC CAPACITORS
Performance Characteristics
5
8
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| T491C474M035AT | 制造商:KEMET 制造商全稱:Kemet Corporation 功能描述:Surface Mount Capacitors |
| T491C474M050AT | 功能描述:鉭質電容器-固體SMD 50volts 0.47uF 20% RoHS:否 制造商:AVX 電容:100 uF 電壓額定值:20 V ESR: 容差:10 % 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4.1 mm 制造商庫存號:E Case 工作溫度范圍:- 55 C to + 125 C 系列:TBM 產品:Tantalum Solid Low ESR Commercial Grade 封裝:Bulk |
| T491C474M050AT4394 | 制造商:KEMET Corporation 功能描述:.470UF 50.0V - Boxed Product (Development Kits) |
| T491C474M050ZT | 功能描述:鉭質電容器-固體SMD .470UF 50.0V RoHS:否 制造商:AVX 電容:100 uF 電壓額定值:20 V ESR: 容差:10 % 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4.1 mm 制造商庫存號:E Case 工作溫度范圍:- 55 C to + 125 C 系列:TBM 產品:Tantalum Solid Low ESR Commercial Grade 封裝:Bulk |
| T491C474M050ZT7280 | 制造商:KEMET Corporation 功能描述:Cap Tant Solid 0.47uF 50V C CASE 20% (6 X 3.2 X 2.5mm) SMD 6032-28 125 |
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