FPG General Description / Application Notes
PROTECTIONAPPLICATION NOTES
G.T.O. PROTECTION MARKING
LogoWithstanding surge voltage
Capacitance and tolerance in clear
Nominal DCvoltage in clearRMS current in clear
Date of manufacture (IEC coding)
DESIGN
Dimensions: millimeters (inches) PROTECTION H ≤ 62 2 (0.079)Max Torque: 8.5Nm (M8) 4.5Nm (M6)H M6/6 or M8/8h TPC 0.5 (0.020)h Choice of voltage:V
1 V
peak V
2 V
n dcMaximum overvoltage V
s (10 s/day)
Nominal DC voltage (V
2 (0.079) 4 (0.16) ADmaxdPlastic Case or (Resin Molding)ResinTinned Output A n dc) and peak voltage (V
peak ) are givenin the table of values.
Dimensions: millimeters (inches)General tolerance: 2 HOT SPOT TEMPERATURE CALCULATION
θ
hot spot = θ
terminals + (P
d + P
t ) x R
th withP
d (Dielectric losses) = Q x tg δ
⇒ [
1 ⁄
2 x C
n x (V
peak to
peak )
2 x f ] x (2 x 10
-4 )P
t (Thermal losses) = R
s x (I
rms )
2 whereC
n in FaradsVin VoltsI
rms in AmperesR
s in Ohmsfin Hertz
WORKING TEMPERATURE
θ in CR (according to the power to be dissipated)-40C to +85C
th in C/W
Due to the design of the
capacitor and its technology, the thermal impedance between the terminations and the
core of the capacitor is low, it is necessary to take care that
the capacitor is never overheated by use of incorrect sized
connections.In the case where the series diodes are screwed to thecapacitor, cooling of the diodes must be taken in account.Do not use the capacitor as a heat sink.
Due to the complexity of the diode/capacitor thermalexchanges, we recommend that thermal measurements
shall be made on the different components. We would be
pleased to advise you on specific problems.
For higher power protection devices and further informationplease see PPX Series in Capacitor for High Power Electronicsavailable on AVX website: www.avxcorp.com 38