EP2C8 datasheet(6/7 Pages) ALTERA

6 / 7 page

DS-CYTHRML-3.0

Altera Corporation

Altera Device Package Information Data Sheet

Table 6 provides

θJA and θJB (junction-to-board thermal resistance) values

for Cyclone II devices on a typical board.

Cyclone

Devices

Table 7 provides

θJA (junction-to-ambient thermal resistance) and θJC

(junction-to-case thermal resistance) values for Cyclone devices.

Table 6. Thermal Resistance of Cyclone II Devices

Device

Package

θJA (° C/W)

Still Air

θJA (° C/W)

100 ft./min.

θJA (° C/W)

200 ft./min.

θJA (° C/W)

400 ft./min.

θJB (°C/W)

EP2C5

F256

30.2

25.8

22.9

20.6

14.8

EP2C8

F256

27.9

23.2

20.5

18.4

12.3

EP2C20

F256

24.7

20.1

17.5

15.3

9.1

F484

20.5

16.2

13.9

12.2

7.2

EP2C35

F484

18.8

14.5

12.3

10.6

5.7

U484

20.0

15.5

13.2

11.3

5.3

EP2C50

F484

17.7

13.5

11.4

9.8

4.5

U484

19.0

14.6

12.3

10.6

4.4

EP2C35

F672

17.4

13.3

11.3

9.8

5.5

EP2C50

F672

16.5

12.4

10.5

9.0

4.6

F672

15.7

11.7

9.8

8.3

3.8

EP2C70

F896

14.6

10.7

8.9

7.6

3.7

Table 7. Thermal Resistance of Cyclone Devices (Part 1 of 2)

Device

Pin Count

Package

θJC (°C/W) θJA

(°C/W)

Still Air

θJA (°C/W)

100 ft./min.

θJA (°C/W)

200 ft./min.

θJA (°C/W)

400 ft./min.

EP1C3

100

TQFP

11.0

37.5

35.4

33.4

29.8

144

TQFP

10.0

31.1

29.4

27.9

25.5

EP1C6

144

TQFP

9.8

29.4

28.0

26.7

24.7

240

PQFP

4.3

27.2

24.7

22.1

17.8

256

FBGA

8.8

28.7

24.5

22.3

20.5

EP1C12

240

PQFP

4.0

26.0

23.4

20.8

17.1

256

FBGA

6.6

24.3

20.2

18.1

16.4

324

FBGA

6.1

23.0

19.8

17.7

16.1

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