DHRB34C471M2BB Ver la hoja de datos (PDF) - Unspecified

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DHRB34C471M2BB

HIGH VOLTAGE CERAMIC CAPACITORS

Unspecified 

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C41E2.pdf 03.4.16

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1 DHR Series !Caution/Notice

s !Caution (Rating)

1. Operating Voltage

When DC-rated capacitors are to be used in AC or ripple

current circuits, be sure to maintain the Vp-p value of the

applied voltage or the Vo-p which contains DC bias within

the rated voltage range.

When the voltage is applied to the circuit, starting or

stopping may generate irregular voltage for a transit

period because of resonance or switching. Be sure to use

a capacitor with a rated voltage range that includes these

irregular voltages.

Voltage

DC Voltage

DC+AC Voltage

AC Voltage

Pulse Voltage (1)

Pulse Voltage (2)

Positional

Measurement

V0-p

V0-p

Vp-p

Vp-p

Vp-p

2. Operating Temperature and Self-generated Heat

Keep the surface temperature of a capacitor below the

upper limit of its rated operating temperature range. Be

sure to take into account the heat generated by the

capacitor itself. When the capacitor is used in a high-

frequency current, pulse current or similar current, it may

self-generate heat due to dielectric loss. The applied

voltage load should be such that the capacitor's self-

generated heat is within 10°C at an atmosphere

temperature of 25°C. When measuring, use a

thermocouple of small thermal capacity-K of ø0.1mm in

conditions where the capacitor is not affected by radiant

heat from other components or surrounding ambient

fluctuations. Excessive heat may lead to deterioration of

the capacitor's characteristics and reliability. (Never

attempt to perform measurement with the cooling fan

running. Otherwise, accurate measurement cannot be

ensured.)

Failure to follow the above cautions may result, worst

case, in a short circuit and cause fuming or partial

dispersion when the product is used.

s !Caution (Storage and Operation Condition)

Operating and storage environment

The insulating coating of capacitors does not form a

perfect seal; therefore, do not use or store

capacitors in a corrosive atmosphere, especially

where chloride gas, sulfide gas, acid, alkali, salt

or the like are present. And avoid exposure to

moisture.

The capacitor is designed to be used in insulating

media, such as epoxy resin, silicone oil, etc.

There must be 3mm or more of insulating media for

each direction of the capacitor.

Before cleaning, bonding, or molding this product,

verify that these processes do not affect product

quality by testing the performance of a cleaned,

bonded or molded product in the intended equipment.

Store the capacitors where the temperature and

relative humidity do not exceed -10 to 40 degrees

centigrade and 15 to 85%. Use capacitors within 6

months.

FAILURE TO FOLLOW THE ABOVE CAUTIONS MAY

RESULT, WORST CASE, IN A SHORT CIRCUIT

AND CAUSE FUMING OR PARTIAL DISPERSION

WHEN THE PRODUCT IS USED.

8

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