5228-DS07-R datasheet(92/100 Pages) BOARDCOM

92 / 100 page

BCM5228

Data Sheet

7/12/04

Broa d c om Co rp o r a t i o n

Page 80

Packaging Thermal Characteristics

Document

5228-DS09-405-R

Se ction 1 0 : Pa ck ag ing Therm al C h ar acte r istics

ThetaJC for this package is 5.84°C/W. The BCM5228B is designed and rated for a maximum junction temperature of 125°C.

ThetaJC for this package is 6.19°C/W. The BCM5228F is designed and rated for a maximum junction temperature of 125°C.

ThetaJC for this package is 6.19°C/W. The BCM5228U is designed and rated for a maximum junction temperature of 125°C.

Table 60: ThetaJA vs. Airflow for the BCM5228B (256 FPBGA) Package

Airflow (feet per minute)

100

200

400

600

ThetaJA(°C/W)

19.02

16.70

15.85

14.84

14.16

Table 61: ThetaJA vs. Airflow for the BCM5228F (208 PQFP) Package

Airflow (feet per minute)

100

200

400

600

ThetaJA(°C/W)

16.35

13.96

13.09

12.21

11.70

Table 62: ThetaJA vs. Airflow for the BCM5228U (208 PQFP) Package

Airflow (feet per minute)

100

200

400

600

ThetaJA(°C/W)

16.35

13.96

13.09

12.21

11.70

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