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参数资料
| 型号： | EDLF474B5R5C |
| 厂商： | Cornell Dubilier Electronics (CDE) |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | CAP SUPER .47F 5.5V RADIAL |
| 标准包装： | 100 |
| 系列： | EDL |
| 电容： | 470mF |
| 电压 - 额定： | 5.5V |
| ESR（等效串联电阻）： | 75 欧姆 |
| 安装类型： | 通孔 |
| 封装/外壳： | 径向，Can |
| 引线间隔： | 0.197"（5.00mm） |
| 包装： | 散装 |
| 尺寸/尺寸： | 0.846" 直径（21.50mm） |
| 高度 - 座高（最大）： | 0.374"（9.50mm） |
| 工作温度： | -25°C ~ 85°C |
Type EDL , Electric Double Layer Supercapacitors
Ultra High Capacitance, Small Case Size Options
Type EDL electric double layer supercapacitors offer extremely
high capacitance values (farads) in a variety of packaging options
that will satisfy, low profile, surface mount, through hole and high
density assembly requirements. The EDL is a cut above the standard
electrolytic capacitor in that it can act as a battery without having
to deal with the environmental or hazardous material issues that
batteries entail.
Highlights
Specifications
Operating Temperature Range
Rated Voltage Range
Capacitance Range
- Unlimited charging and discharging capability
- Recycling is not necessary
- Long Life - 15 years
- Low ESR
- Will extend battery life up to 1.6 times
- First class performance with economy pricing
–25 oC to +85 oC
2.1 Vdc to 5.5 Vdc
0.022 F to 70 F
How To Select an Electric Double Layer Capacitor
Estimated Initial Backup Time
Select the optimum supercapacitor according to applied
current
Back-up time for Type EDL Electric Double Layer Supercapacitors decreas-
es with use and over time especially when the current is large or operat-
ing at high temperature. Be sure to specify extra back-up time initially to
allow for product changes.
The internal resistance of the supercapacitor prevents drawing high
discharge currents. Select the supercapacitor capable of delivering the
peak current a t switchover to back-up mode using t he following table.
Maximum Operating (Discharge) Current
Series
SG, SD, NF
F
EN
HW
0.047 F
200 μA
200 μA
–
–
0.1 F to
0.33 F
300 μA
300 μA
10 μA
–
0.47 F to
1.5 F
1 mA
300 μA
–
–
3.3 F to
4.7 F
–
–
–
300 mA
10 F to
50 F
–
–
–
1A
Back Up Time Example
Back-up time is the time it takes for the applied voltage to decay to the
cut-off voltage set by the user after applying the application’s maximum
voltage at application maximum temperature.
Example: An F Type EDL, P/N EDLF105B5R5C (Rated at 5.5 V, 1.0 F) is
charged to 5.0 Vdc. The circuit requirement is such that it must maintain a
memory circuit with a current drain of 10 μA in an ambient temperature of
+40 oC. The memory RTC cut-off voltage is 2.0 Vdc.
Using minimum capacitance, calculate the back-up time as
follows:
t = CΔV ? I = C[V0–(i?R)–V1] ? (i+iL)
C = 1.0 F–20% = 0.8 F, R=50 Ω, V0=5 V, V1=2 V, i=10 μA
Therefore,
t = 0.8 (5–0.0005–2) ? ((10+2) x10^–6)= 55 hours
And thus the initial back-up time is 55 hours. After 1000 hours,
calculate the back-up time will drop to about 38 hours.
t: Back-up time (s)
C: Capacitance of Type EDL (F)
V 0 : Applied voltage (V)
V 1 : Cut-off voltage (V)
i: Current during back-up (A)
i L : Leakage current (A)
R: Internal resistance (Ω) at 1 kHz
CDE Cornell Dubilier ? 1605 E. Rodney French Blvd. ? New Bedford, MA 02744 ? Phone: (508)996-8561 ? Fax: (508)996-3830
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