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PAS1240LA3R0105 Datasheet(PDF) 4 Page - Taiyo Yuden (U.S.A.), Inc
TAIYO-YUDEN [Taiyo Yuden (U.S.A.), Inc]
PAS1240LA3R0105 Datasheet(HTML) 4 Page - Taiyo Yuden (U.S.A.), Inc
/ 4 page
1. Use under the maximum usable voltage
If over maximum usable voltage is applied, it might cause abnormal current ﬂow,
which shorten lifetime and sometimes damage PAS capacitor.
2. Use under maximum operating temperature
Not only shorter life time but also leakage and damage will happen by increasing
internal pressure if PAS capacitor use in over max operating temperature.
3. Limited life time
Lifetime of PAS capacitor is greatly affected by surrounding temperature. 10℃
drop in temperature extend its expected lifetime approximately twice as much. De-
sign a circuit under consideration of deterioration of electrical characteristics after
long time usage, decreasing in capacitance and increasing in internal resistance.
4. The electrical characteristics of capacitors vary with respect to temperature
The electrical characteristics of PAS capacitors temporarily vary with respect to
temperature separately from secular change mentioned above. Design a circuit
under consideration of temperature characteristics.
5. PAS capacitor has polarity
PAS capacitor has polarity. Please check the polarity before use. It will be dam-
aged if it is reversely charged.
6. Mind high ripple current or rapid charge / discharge
In circuit with high ripple current or rapid charge / discharge, the lifetime of PAS
capacitors might be shortened by self-heating.
7. Mind voltage drop when discharging
When back-up (discharging) starts, voltage drop because of active current and
8. Series connection
In case of using PAS capacitor in series connection, the voltage of each capacitor
is not always equal and it may be occurred excessive voltage in a part of capaci-
tor, which may lead to shortening lifetime and breakdown. Take a margin against a
rated voltage or add a balancing resister.
9. PAS capacitor has the pressure release vent
In case of inside pressure of capacitor excessively rising, the pressure release vent
will be opened in order to release inner gas. Following clearance (Diameter<φ
18：over 2mm, Diameter≧φ18：over 3mm) should be made above the pressure
Don’tset up wiring or a pattern in the upper part of the pressure release vent, so
that the high temperature gas is gushed when the pressure release vent open.
The product which open the pressure release vent can not use.
10. The sleeve of the PAS capacitor is not guaranteed insulation
Short circuit might happen if circuit pattern is set underneath of PAS capacitor or
it ﬁxed by a metal or it contact with other component.
11. Environmental of usage
In case PAS capacitor is used in the high humidity, alkaline or acid air, it may cause
deterioration of its performance, electrolyte leak and short circuit by corrosion of
outer can or lead terminal.
In addition, used in sudden temperature change or high humidity, it may cause
deteriorating of its performance and electrolyte leak by dew condensation.
12. Don’tapply shock and vibration or pressure
PAS capacitor is sensitive to shock. Don’tdrop PAS capacitor and not apply
strong pressure to a body, terminals and lead. Soldering part or lead terminal
might be damaged if applying vibration, shock and stress such as pinch, tip, push
and twist after installed.
If next each item is not minded, it may cause deteriorating of its performance,
leakage, shortening lifetime.
◦ Don’tcontact solder iron to a cell body.
◦ Don’tsolder over solder conditions in the spec sheet.
14. Cleaning condition when cleaning circuit-board after soldering
Cleaning may affect PAS capacitor. Consult us about cleaning conditions before-
hand. Some cleaning conditions cause detrimental inﬂuence.
Keep following cautions for storage of PAS capacitor.
◦ Don’tstore in the high temperature, the high humidity condition and a place
where receiving direct sunlight. Storing PAS capacitor in the room condition of
10℃ - 35℃ and less than 65% relative humidity is recommended. Sudden tem-
perature change or high humidity may cause deteriorating of its characteristics
◦ Don’tstore PAS capacitor near water, salt water or oil, and it the dew conden-
sation, gasiﬁed oil or salinity ﬁlled place.
◦ Don’tstore PAS capacitor in the hazardous gas (hydrogen sulﬁde, sulfurous,
chlorine , ammonia, bromine, methyl bromine and etc).
◦ Don’tfumigate by halogen fumigant.
◦ Don’tstore PAS capacitor near acid or alkaline solvent.
◦ Don’tstore PAS capacitor in a place where exposed to ozone, ultraviolet or
◦ Don’tstore PAS capacitor in a place where vibration and shock might occur in.
Dispose PAS capacitor in accordance with local and country rules and regulations.
PAS capacitor is developed on the assumption of the memory-backup & RTC for
usage of information & communication equipment, home electronics, audio & visu-
al equipment, ofﬁce equipment and etc. Consult us about using high reliability and
safety required products such as medical equipment, transportation equipment,
industrial equipment, ﬂight / space equipment and emergency equipment.
18. Other Notice
◦ Don’theat or throw PAS capacitor into ﬁre.
◦ Don’tsolder directly to a cell body.
◦ Don’topen a body
◦ Don’tapply pressure.
＊This catalog contains the typical speciﬁcation only due to the limitation of space. When you consider the purchase of our products, please check our speciﬁcation.
For details of each product (characteristics graph, reliability information, precautions for use, and so on), see our Web site (http://www.ty-top.com/) or CD catalogs.
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