PBL3717A
MOUNTING INSTRUCTIONS
The Rth j-amb of the PBL 3717A can be reduced by
soldering the GND pins to a suitable copper area of
the printed circuit board or to an external heatsink.
Figure 10 : Example of P.C. Board Copper Area
which is used as Heatsink
The diagram of fig. 11 shows the maximum dissipa-
ble power Ptot and the Rth j-amb as a function of the
side "α" of two equal square copper areas having a
thichkness of 35µ (see fig. 10).
Figure 11 : Max. Dissipable Power and Junction-
Ambient Thermal Resistance versus
size "a"
9/11