Matters to Be Observed When Using This Product

■ A dielectric film is not a fire-resistant material. In contrast, an ECQE type metallized polyester capacitor and ECWF type/

ECWH type metallized polypropylene capacitors each have an outer casing made of a fire-resistant epoxy resin (UL94 V-0).

■ Because the capacitor described herein is made of a combustible material, it may generate smoke or even ignite when

exposed to excessive heat. We therefore recommend you cover the capacitor with a fire-resistant material or fire-resistant

case. When you use the capacitor at an operating voltage of 30 V AC or higher or 45 V DC or higher, to prevent

noise between a line and the ground or between different lines, we recommend you cover a resin component near the

capacitor with a fire-resistant material or fire-resistant case (to prevent a fire accident).

　■Whenadifferentcomponentinthesamecircuithasshort-circuitedordevelopedanopenfailure,seetoitthatavoltage

or current higher than the rated voltage or current or excessive heat is not applied to the capacitor.

We define the maximum voltage that can be applied consecutively regardless of temperature, as rated voltage*1.

Be careful with the fact, however, that this rated voltage is different from rated voltages defined in JIS, IEC, etc.*2

*1 Definition of the rated voltage by our company

We define the maximum voltage that can be applied continuously within the entire category temperature range,

as the rated voltage. In a high-temperature condition where voltage reduction is necessary, a reduced maximum

voltage is referred to as the rated voltage. Therefore, the maximum voltage that can be applied continuously at the

category upper limit temperature is also referred to as the rated voltage.

*2 Definition of the rated voltage by JIS and IEC

JIS and IEC define the maximum voltage that can be applied continuously within a temperature range from the

category lower limit temperature to the rated temperature, as the rated voltage. According to JIS and IEC, the

maximum voltage that can be applied continuously at the category upper limit temperature is referred to as the

category voltage. In a temperature range from the rated temperature to the category upper limit temperature,

voltage reduction is necessary in some cases, where a reduced maximum voltage is referred to as

temperature-dependent reduced voltage.

■ Current that charges or discharges from the capacitor in a rapid charge or discharge causes short-circuit failure,

open failure, etc., thus leading to the degradation of the capacitor characteristics. Make sure that the capacitor is

charged or discharges with a resistance of 20 Ω/V to 1000 Ω/V or more in series. In a withstand voltage test, service

life test, etc., where numbers of the capacitors are connected in parallel, each capacitor must have a resistance of

20 Ω/V to 1000 Ω/V or more connected in series thereto.

■ Make sure that a sharp element (a screw driver, solder iron, tweezers, a chassis edge, etc.) does not hit the capacitor

surface.

Do not apply an unnecessarily heavy load to the leads (for example, by reworking the leads).

■ Accidentally dropping the capacitor on the floor may damage its characteristics. Do not use a capacitor when this

happens. If you still use such a dropped capacitor, check its quality first.

■ Be careful not to apply excessive force to the base of the leads of a lead-type capacitor. It causes the exterior resin

near the base to crack.

■ The chip-type capacitor has been developed under the assumption that it will be used as an ordinary surface-mounted

component. Avoid using a capacitor in an unusual configuration (e.g., stacking the capacitors in two layers, setting

the capacitor in a standing position, etc.). When you intend to use the capacitor in an unusual configuration, please

contact us in advance.

■ Take care to prevent water or dust from adhering to the terminal surface of the capacitor. Water or dust on the terminal

causes current leakage, corrosion, etc.

■ The capacitor emits a humming sound created by mechanical vibration of the dielectric film caused by a coulomb

force between the positive and negative electrodes. In particular, the humming sound, in the form of a sound wave

containing a source voltage distortion or harmonic component, is heard as a high-tone sound.

From the viewpoint of electrical characteristics, it poses no problem. However, when the capacitor is used at a

frequency close to the audible frequency, check the humming sound.

■ When the capacitor is used as a capacitor for preventing noise from an AC power supply (across-the-line capacitor),

a source voltage is constantly applied to the capacitor and a surge voltage, such as a lightning surge, is applied

to the capacitor as well. This may cause the capacitor to ignite or generate smoke. For such capacitors inserted

between power lines, strict safety standards are set by individual countries, using products conforming to the safety

standards is mandatory. When you are looking for across-the-line capacitors for use in domestic equipment, use

capacitors conforming to overseas certification standards or capacitors listed below.

ECQE(F)

: Rating 1000 V DC (125 V AC)

ECQE(F)/(B)/(T)

: Rating 125 V AC (1A)

ECQE(F)

: Rating 1250 V DC (125 V AC)

ECQE(F)/(T)

: Rating 250 V AC (2A)

23-Apr-25

　Response to anomalies and handling conditions