PCMP389F4A datasheet(15/16 Pages) WPI

15 / 16 page

Pilkor components

AC and Pulse

PCMP 389

Metallized Polypropylene film capacitors

167

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 ionisation

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 < U

Rdc ×









dt rated

T is the pulse duration.

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

PCMP389F4A Arkusz danych(PDF) 15 Page - World Produts Inc.