L6221C_03 STMICROELECTRONICS [STMicroelectronics], L6221C_03 Datasheet - Page 11

• Manufacturer Part Number: L6221C_03
• Description: QUAD DARLINGTON SWITCH
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Figure 23 : Example of P.C. Board Copper
MOUNTING INSTRUCTION
The R
dering the GND pins to a suitable copper area of the
printed circuit board (Fig. 23) or to an external
heatsink (Fig. 24).
The diagram of figure 25 shows the maximum dis-
sipable power P
the side " " of two equal square copper areas hav-
Figure 25 : Maximum Dissipable Power
th j-amb
of the L6221C can be reduced by sol-
Area Which is Used as Heatsink.
and Junction to Ambient Ther-
mal Resistance vs. Side " ".
tot
and the R
th j-amb
as a function of
ing a thickness of 35
the pins temperature must not exceed 260 C and
the soldering time must not be longer than 12 sec-
onds.
The external heatsink or printed circuit copper area
must be connected to electrical ground.
Figure 24 : External Heatsink Mounting
Figure 26 : Maximum Allowable Power
Dissipation vs. Ambient
Temperature.
Example.
(1.4 mils). During soldering
L6221C
11/15