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| 型号： | DC-2R5E224U-E |
| 厂商： | Elna America |
| 文件页数： | 31/145页 |
| 文件大小： | 0K |
| 描述： | CAP SUPER 220MF 2.5V COIN SMD |
| 产品目录绘图： | DC Series Front DC Series Side |
| 标准包装： | 200 |
| 系列： | DC |
| 电容： | 220mF |
| 电压 - 额定： | 2.5V |
| 容差： | -20%，+80% |
| ESR（等效串联电阻）： | 100 欧姆 |
| 寿命@温度： | 70°C 时为 1000 小时 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 币形，细型端子 - 同侧 |
| 引线间隔： | 0.079"（2.00mm） |
| 包装： | 散装 |
| 尺寸/尺寸： | 0.268" 直径（6.80mm） |
| 高度 - 座高（最大）： | 0.102"（2.60mm） |
| 工作温度： | -25°C ~ 70°C |
| 产品目录页面： | 1912 (CN2011-ZH PDF) |
| 其它名称： | 604-1006 |
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the design of the appliance is also recommended,
considering the effect of the initial increased current.
10. Insulation between the capacitor case and the
cathode terminal.
? The capacitor case and the cathode terminal are
connected through the electrolyte which has
uncertain resistance. If a complete insulation of the
case is necessary, add an insulator at assembly.
ALUMINUM ELECTROLYTIC CAPACITORS
vent explosion due to the rise of inside pressure
when a reverse or excessive voltage is applied to
the capacitor. Once it has worked as a valve, the
whole capacitor needs to be replaced since the
valve will not restore.
? When you use a capacitor with pressure valve,
provide certain space above the pressure valve as
below to prevent an interference when it works as
a valve.
11. External sleeve.
? During a preheating or a hardening of mounting
adhesive may cause a sleeve cracked.
Diameter of the capacitor
(mm)
Required space
above the valve (mm)
18 to less
2.0
20 to 40
3.0
The capacitors are usually sleeved with poly vinyl
chloride or poly ethylene terephthalate for the
indication purpose only. Please do not consider it
as an insulation.
12. Fumigation Process
? When exporting electronic equipment abroad,
fumigation process may be performed on wooden
packaging material with a halogen (compound) gas
such as methyl bromide. Exercise care as this
halogen gas may corrode capacitors. Also, use
caution to epidemic preventive agent as corrosive
component such as halogen may be contained.
13. Specific Operating Environments
? Capacitors may corrode when stored or used in a
place filled with acidic toxic gases (such as
hydrogen sulfide, sulfurous acid, nitrous acid,
chlorine, bromine, methyl bromide, etc.)
If capacitors are used or stored in such
environments, please let us know.
14. Use at a high altitude
? The use of capacitors at high altitudes such as on
an airplane causes a large difference between the
internal pressure of the capacitors and the atmos -
pheric pressure. However, there is no problem in
use under atmospheric pressure up to about an
altitude of 10,000 meters. Please check the
operation of electronic equipment at the operating
environmental temperature because the
temperature lowers with increased altitude.
15. Hole pitch adjustment of the PCB to the
capacitors.
? Set the hole pitch of the PCB to the lead pitch (the
“F” distance in the catalog) of the capacitor. Be
careful since a short circuit, a cut or an increase
in the leakage current etc. may be caused by the
stress given to the lead wire terminals due to the
difference between the hole pitch and the lead
pitch.
16. Capacitors with pressure valves.
? A part of the capacitor case is made thin to have
the function as the pressure valve in order to pre -
NOTE
Design, Speci?cations are subject to change without notice.
Ask factory for technical speci?cations before purchase and/or use.
17. Double-sided PCB’s
? When you use electrolytic capacitors on a double
sided PCB, be careful not to have the circuit pattern
run under where the capacitor is mounted.
Otherwise it may cause a short circuit on the PCB
depending on the condition of mounting.
18. Regarding to connection of capacitors
? Aluminum electrolytic capacitor has electrolyte liquid
so that the most portion of electric loss
characteristics came from E.S.R(Equivalent Series
Resistance) of electrolyte liquid. Therefore the
capacitor is an electronic devise which can flow high
ripple current in case the temperature increases and
it decreases E.S.R.
In case connecting two capacitors or more, E.S.R. of
the capacitors is close to the resistance of the circuit.
Therefore in case current is unbalanced and some
capacitors has high ripple current, temperature
increase, it makes more high current and finally it is
over the rated ripple current.
For parallel connection of capacitors the proper
design of electric circuit such as balancing of each
capacitors resistance or control of total ripple current
shall be provided to avoid excess ripple current and
voltage.
? When two or more capacitors are arranged in
series, the voltage given to each capacitors shall
be kept below the rated voltage level, by also giving
consideration to the balance of the voltage
impressed on the capacitors. Further, partial
pressure resistor which considers leakage current
shall be provided parallel to each condenser not to
have over-voltage impressed on.
Balance resistance are explained on p.106 of our
Catalog.
Cautions for Mounting
1. Cautions for mounting.
? Check the ratings (electrostatic capacitance and
rated voltage) of the capacitor before mounting.
? Check the polarity of the capacitor to the chassis.
? Do not drop the capacitor to the floor. Do not use
CAT.No.2008/2009E(2008.10.1)
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