Medium Power Film Capacitors
FAI (RoHS Compliant)
TUNING
The FAI series uses metallized polypropylene dielectric
specifically designed for very high reactive power.
The FAI's special design gives to this series a very low level
of stray inductance.
APPLICATIONS
These capacitors have been designed principally for:
low and medium frequency applications
(10 kHz to 500 kHz)
MAXIMUM WORKING TEMPERATURE
(HOT SPOT)
+85°C: Hot spot temperature must be calculated as function
of power dissipation.
HOT SPOT (THERMAL) CALCULATION
See Hot Spot Temperature page 3.
Theoretical life time vs hot spot temperature
1000000
You can calculate the maximum operating (hot spot) tem-
perature of this capacitor in the following manner:
Polypropylene has a constant loss factor (tgδ0) of 2x10-4
100000
10000
1000
irrespective of temperature and frequency (up to 1 MHz).
The loss factor of the capacitor is made up of the sum of
two components. The first represents electrical losses
(tgδ0 = 2.10-4) and the second represents Joule effect in the
connection and foils: Rs.C.2πF.
60
70
80
90
Hot spot temperature (∞C)
For all applications, the temperature in the hot spot capacitor
must be lower than 85°C.
ELECTRICAL CHARACTERISTICS
Heating calculation of hot spot capacitor: FAI1 FAI2 FAI3
Capacitance range Cn
Tolerance
Rated AC voltage
Series parasitic inductance
Test voltage between
terminals @ 25°C
110nF to 60μF
10ꢀ
200 to 650 Vrms
< 5 nH
2
.
.
.
θ hot spot = θ terminals + (tgδ0 Q + Rs (Irms) ) Rth
Heating calculation of hot spot capacitor: FAI6
2
.
.
θ hot spot = θ water + (tgδ0Q + Rs (Irms) ) Rth
With:
tgδ0 = 2.10-4
Q in Var
1.2 Vrms 50/60 Hz 10s
Polypropylene
Rs in Ohms
Dielectric
Irms in Amperes
Rth in °C/W (water flow = 10 dm3/minute)
Note: The life time depends of hot spot temperature, see
following curve.
HOW TO ORDER
6
J
0114
K
– –
FAI
1
Dielectric
6 = Polypropylene
Voltage Code
Capacitance Code
0 + pF code
0114 = 0.11μF (110nF)
0245 = 2.4μF (2400nF)
0405 = 4.0μF (4000nF)
etc.
Capacitance
Tolerances
K = 10ꢀ
Terminal Code
– – = Standard
Series Case
H = 300 Vrms
Size
I = 350 Vrms (Case size 3)
I = 400 Vrms (Case size 4)
J = 500 Vrms
1
2
3
4
5
6
K = 60 Vrms
JUNE 2015 ■ 91