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20140922 / vpd_varistors_avr_en.fm
Voltage Protection Devices
REMINDERS FOR USING THESE PRODUCTS
Before using these products, be sure to request the delivery specifications.
SAFETY REMINDERS
Please pay sufficient attention to the warnings for safe designing when using these products.
Please observe the following precautions in order to avoid problems with chip varistors such as characteristic degradation and element
destruction.
Please store these products in an environment with a temperature of 5 to 40°C and humidity level of 20 to 70%RH, and use them
within six months.
Poor storage conditions may lead to the deterioration of the solderability of the edge electrodes, so please be careful to avoid contact
with humidity, dew condensation, dust, toxic gas (hydrogen, hydrogen sulfide, sulfurous acid, chlorine, ammonia, etc.), direct sunlight,
and so on.
Please do not use products that have been dropped or detached when mounting.
Please solder with the reflow soldering method, and not the flow (dip) soldering method.
Please observe the following precautions to avoid problems with varistors such as characteristic degradation and element destruction,
which ultimately lead to the generation of heat and smoke with the elements.
Do not use in locations where the temperatures exceed the operating temperature range such as under direct sunlight or near
sources of heat.
Do not use in locations where there are high levels of humidity such as under direct exposure to weather and areas where steam is
released.
Do not use in locations such as dusty areas, high-saline environments, places where the atmosphere is contaminated with corrosive
gas, etc.
Avoid powerful vibrations, impact (such as by dropping), pressure, etc. that may lead to splitting in the products.
Do not use with a voltage that exceeds the maximum allowable circuit voltage.
When resin coating (including modular) a varistor, do not use a resin that will cause deterioration of the varistor. Be sure never to use
resin that generates hydrogen as palladium is used for the inner electrode.
Avoid attachment near combustible materials.
Please contact our sales offices when considering the use of the products listed on this catalog for applications, whose performance
and/or quality require a more stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage
to society, person or property ('specific uses' such as automobiles, airplanes, medical instruments, nuclear devices, etc.) as well as
when considering the use for applications that exceed the range and conditions of this catalog.
Please also contact us when using these products for automotive applications.
Please note that we are not responsible for any damages or losses incurred resulting from the use of these products that exceeds the
range and conditions of this catalog or specific uses.
Please take appropriate measures such as acquiring protective circuits and devices that meet the uses, applications, and conditions of
the instruments and keeping backup circuits.
REMINDERS
