MKP385 Vishay, MKP385 Datasheet - Page 9

• Manufacturer Part Number: MKP385
• Description: Ac And Pulse Metallized Polypropylene Film Capacitors Mkp Radial Potted Type
• Manufacturer: Vishay

HEAT CONDUCTIVITY (G) AS A FUNCTION OF ORIGINAL PITCH AND CAPACITOR BODY THICKNESS IN mW/°C
POWER DISSIPATION AND MAXIMUM COMPONENT TEMPERATURE RISE
The power dissipation must be limited in order not to exceed the maximum allowed component temperature rise as a function of
the free air ambient temperature.
The power dissipation can be calculated according type detail specification “HQN-384-01/101: Technical Information Film
Capacitors” with the typical tgd of the curves.
The component temperature rise (ΔT) can be measured (see section “Measuring the Component Temperature” for more details)
or calculated by ΔT = P/G:
•
• P = Power dissipation of the component (mW)
• G = Heat conductivity of the component (mW/°C)
MEASURING THE COMPONENT TEMPERATURE
A thermocouple must be attached to the capacitor body as in:
The temperature is measured in unloaded (T
The temperature rise is given by ΔT =T
To avoid radiation or convection, the capacitor should be tested in a wind-free box.
Document Number: 28152
Revision: 13-Oct-08
ΔT = Component temperature rise (°C)
W
max.
AC and Pulse Metallized Polypropylene Film Capacitors
10.0
4.0
5.0
6.0
7.0
8.5
(mm)
MKP Radial Potted Type
c
- T
amb
For technical questions, contact: [e-mail]
amb
.
) and maximum loaded condition (T
PITCH 10 mm
6.5
7.5
9.0
-
-
-
HEAT CONDUCTIVITY (mW/°C)
Thermocouple
c
).
Vishay BCcomponents
PITCH 15 mm
10
11
12
16
18
-
MKP 385
www.vishay.com
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