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L6221 Fiches technique(PDF) 17 Page - STMicroelectronics

No de pièce L6221
Description  Quad Darlington switch
PDF  22 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6221 Fiches technique(HTML) 17 Page - STMicroelectronics

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Mounting instructions
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Figure 25 shows the maximum dissipable power Ptot and the Rth j-amb as a function of the
side "
α" of two equal square copper areas having a thickness of 35 µm (1.4 mils). During
soldering the pins temperature must not exceed 260 °C and the soldering time must not be
longer than 12 seconds.
The external heat sink or printed circuit copper area must be connected to electrical ground.
Figure 25.
Maximum dissipable power and junction-to-ambient thermal resistance
versus side "
α"
Figure 26.
Maximum allowable power dissipation versus ambient temperature



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