PCMT468 datasheet(12/13 Pages) WPI

12 / 13 page

Pilkor components

Metallized Polyester

PCMT 468

film capacitors

APPLICATION NOTE AND LIMITING CONDITIONS

These capacitors are not suitable for mains application as across-the-line capacitors without

additional protection.

To select the capacitor for a certain application, the following conditions must be checked :

1. The peak voltage (Vp) shall not be greater than the rated DC voltage (VRdc).

2. The peak-to-peak voltage (Vp-p) shall not be greater than the maximum Vp-p to avoid

the ionization inception level.

3. The voltage pulse slope (dV/dt) shall not exceed the rated voltage pulse slope in an RC-circuit at

rated voltage and without ringing. If the pulse voltage is lower than the rated DC voltage,

the rated voltage pulse slope may be multiplied by VRdc and divided by the applied voltage.

For all other pulses following equation must be fulfilled :

2 × ⌡

⌠









dt × dt < URdc ×









dt rated

T is the pulse duration.

4. The maximum component surface temperature rise must be lower than the limits.

Voltage conditions for aboves.

ALLOWED VOLTAGES

Tamb < 85℃

85℃ < Tamb < 105℃

Maximum continuous RMS voltage

VRac

0.7 x VRac

Maximum temporary RMS over voltage (<24 hrs)

1.25 x VRac

0.875 x VRac

PCMT468 Datasheet(PDF) 12 Page - World Produts Inc.