Matters to Be Observed When Using This Product

■ When ECQE(F)1A /2A, ECQE(B)1A, and ECQE(T)1A /2A are used as across-the-line capacitors, they must satisfy

at least one of the following conditions.

(1) A varistor with a varistor voltage specified in the following table or lower is connected in parallel with the capacitor.

(2) No pulse voltage higher than the pulse voltage specified in the following table is applied across both ends of the

capacitor.

■ When using a varistor together with the capacitor, confirm the varistor with the delivery specification sheet and use a

varistor with no sign of surge-caused deterioration.

■ When using the capacitor in equipment requiring capacitors conforming to overseas certification standards, use

capacitors (typical types) listed in the following table. To know about CQC standards in China, make an inquiry with us.

■ Using the capacitor as a voltage dropper may result in a reduction in the capacitance. For example, when an abnormal

voltage, such as surge voltage, is applied to the capacitor, a fuse inside the capacitor is activated, which reduces its

capacitance. In a worst-case scenario, the capacitor no longer functions as a voltage dropper.

Observe the capacitor carefully to see if any abnormal voltage is applied thereto. Such abnormal voltage to the capacitor

may generate high voltage applied to the circuit load. To deal with such a problem, provide the circuit with a safety

protection means.

■ Capacitor characteristics change, depending on ambient environment conditions under which the capacitor operates.

Even when the capacitor is just left as it is, humidity in the air can infiltrate the capacitor and cause a slight change in

its capacitance. An extent to which the capacitance changes in this situation varies depending on a dielectric material,

an outer casing material, a structure, etc.

We take these characteristics changes into consideration before shipping out the capacitor. However, unless a separate

agreement is made, our guarantee for the specified capacitance value will be effective only up to the delivery date.

■ When using a capacitor in a circuit that requires precise capacitor elements, such as time constant, use

polypropylene-based capacitors with less time-dependent change, such as ECWFD, ECWF(A)、ECWF(L), ECWH(A),

PPS-based ECHU(X), and ECHU(C).

■ A product conforming to "AEC-Q200" refers to a product having passed some or all of the evaluation test items defined

in AEC-Q200. To know the detailed specifications of individual products or specific evaluation test scores, please

contact us.

We issue a delivery specification sheet for each product ordered. Please confirm with the sheet when you place

an order with us.

■ The maximum working voltage applicable to a capacitor varies, depending on the voltage waveform, current waveform,

frequency, ambient temperature (surface temperature), capacitance, etc. When using a capacitor, check the voltage

waveform and current waveform applied across both terminals of the capacitor and the operating frequency and make

sure that these are within specified values. When the frequency is high, some product types take different allowable

voltages. You can confirm detailed information about this matter on delivery specification sheets.

■ The rated voltage is the maximum voltage that can be applied continuously within the category temperature range.

Operating the capacitor with a voltage higher than the rated voltage leads to dielectric breakdown of the capacitor film,

which may cause a short-circuit failure. Service lives of capacitors operating at the maximum rated voltages vary,

depending on their types.

■ When a voltage higher than the rated voltage is applied to the capacitor, it does not cause a short circuit failure

immediately because of the self-recovery ability of the capacitor, however, a drop in the insulation resistance may occur,

which can lead to smoke generation or ignition under certain circuit conditions.

■ Do not use a noise-preventing capacitor (AC rated voltage type) in a high-frequency circuit. It may cause smoke

generation or ignition under certain service conditions. Rated voltages of capacitors for electronic equipment, except that

of a special types, are usually indicated as DC voltage.

23-Apr-25

Capacitor rated voltage

Varistor voltage

Pulse voltage

125 V.AC (1A)

250 V

250 Vo-p

250 V.AC (2A)

470 V

630 Vo-p

UL 60384-14(US), CSA E60384-14(CA), EN 60384-14(EU)

Resin case

ECQUG

　Reliability and product life

　 Circuit design (working voltage)

ECQUL

Resin case

UL 60384-14(US), CSA E60384-14(CA), EN 60384-14(EU)

Shape

Type

Resin case

ECQUA

Certification standards

UL 60384-14(US), CSA E60384-14(CA), EN 60384-14(EU)