BFC237520223 Vishay, BFC237520223 Datasheet - Page 24

• Manufacturer Part Number: BFC237520223
• Description: CAPACITOR, 0.022UF 1000V CAPACITOR, 0.022UF 1000V
• Manufacturer: Vishay
• Series: 2222375r

Specifications of BFC237520223

• Capacitance: 0.022UF
• Voltage Rating, Ac: 400V
• Voltage Rating, Dc: 1000V
• Capacitor Dielectric Type: POLYPROPYLENE
• Tolerance,: 5%
• Tolerance, -: 5%
• Temp, Op.: ROHS COMPLIANT

KP/MKP 375
Vishay BCcomponents
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.
APPLICATION NOTE AND LIMITING CONDITIONS
To select the capacitor for a certain application, the following conditions must be checked:
1. The peak voltage (U
2. The peak-to-peak voltage (U
3. The voltage pulse slope (dU/dt) shall not exceed the rated voltage pulse slope in an RC-circuit at rated voltage and without
4. The maximum component surface temperature rise must be lower than the limits
EXAMPLE
C = 10 nF 1600 V, KP/MPK
This is a signal as in the drawing below
U
The ambient temperature is 50 °C
Checking conditions:
1. The peak voltage U
2. The peak-to-peak voltage 1200 V is lower than 2√2 x 550 Vac = 1414 U
3. The voltage pulse slope (dU/dt) = 320 V is much lower than 7000 V/µs
4. The dissipated power is 170 mW as calculated with fourier terms
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244
P-P
ringing. If the pulse voltage is lower than the rated DC voltage, the rated voltage pulse slope may be multiplied by U
divided by the applied voltage.
For all other pulses following equation must be fulfilled:
T is the pulse duration.
This gives a temperature rise of 170 mW/(17 mW/°C) = 10 °C which is allowed acc. fig. “max. allowed temperature rise as a
function of ambient temperature” for an ambient temperature of 50 °C
= 1200 V; U
P
= 1100 V; T
P
P
= 1100 V is lower than 1600 Vdc
) shall not be greater than the rated DC voltage (U
1
P-P
= 12 µs; T
) shall not be greater than the maximum (U
AC and Pulse Metallized Polypropylene Film Capacitors
Voltage
For technical questions, contact: [e-mail]
_width)
2
U
C
×
P
- T
T
0
∫
2
⎛
⎝
amb
= 64 µs
dU
------- -
amb
dt
⎞
⎠
.
) and maximum loaded condition (T
2
×
T
dt
1
KP/MKP Radial Lacquered Type
<
U
T
2
Rdc
U
×
P-P
⎛
⎝
dU
------- -
dt
⎞
⎠
rated
Thermocouple
Rdc
P-P
p-p
Time
)
) to avoid the ionisation inception level
C
).
Document Number: 28127
Revision: 09-Dec-08
Rdc
and