ha16138 HITACHI, ha16138 Datasheet - Page 14

• Manufacturer Part Number: ha16138
• Description: Ac/dc Switching Converter Controller With High-voltage Power
• Manufacturer: HITACHI

HA16138PS
14
Figure 7 Sample Printed Circuit Board Copper Heat Sink Pattern
120
100
80
60
40
20
Thermal Resistance j-a and Maximum Power Dissipation vs.
0
Printed Circuit Board Copper Heat Sink Perimeter Length
2.0 oz copper heat sink
10
Length of copper, L (mm)
20
Pin holes
j-a
Wiring pattern
Pt(max) for Ta = +85 C
30
L
40
Glass-epoxy
printed circuit board
50
2.5
2.0
1.5
1.0
0.5
0