EP2C8 ALTERA [Altera Corporation], EP2C8 Datasheet - Page 4

• Manufacturer Part Number: EP2C8
• Description: Cyclone Series Device Thermal Resistance
• Manufacturer: ALTERA [Altera Corporation]

4
EP3C5
EP3C10
EP3C16
EP3C25
EP3C40
EP3C55
Table 4. Thermal Resistance of Cyclone III Devices for Typical Board (Part 1 of 2)
Device
Package
U256
U256
U256
U484
U256
U484
U484
F256
F256
F256
F484
F256
F324
F324
F484
F780
F484
F780
Table 4
values for Cyclone III devices on a typical board.
Notes to
(1)
(2)
2.5 mm Thick Signal Layers
Table 3. PCB Dimensions
U484
U256
F324
F256
Power layer Cu thickness 35 um, Cu 90%
Signal layer Cu thickness 17 um, Cu 15%
θ
JA
Still Air
provides θ
32.2
32.7
32.2
32.7
28.4
26.3
22.5
27.5
28.1
26.4
23.1
22.3
19.4
17.6
21.2
18.6
16.8
Table
(
29
°
DS-CYTHRML-3.0
C/W)
3:
JA
100 ft./min.
θ
values and θ
JA
7
6
6
6
27.9
28.2
27.9
28.2
24.2
24.6
22.1
18.5
23.2
23.7
22.3
18.2
15.4
13.9
17.1
14.6
13.1
(
19
°
C/W)
Notes
Altera Device Package Information Data Sheet
Power/Ground
(1),
JB
200 ft./min.
Layers
θ
JA
(junction-to-board thermal resistance)
(2)
7
6
6
6
25.5
25.7
25.5
25.7
21.8
22.2
19.9
16.4
20.9
21.3
20.1
16.9
13.5
12.1
12.6
11.3
(
16
15
°
C/W)
(Part 2 of 2)
Dimensions
400 ft./min.
Package
θ
(mm)
JA
19
19
17
14
23.6
23.6
23.7
20.2
18.1
14.8
19.1
19.4
15.1
14.3
11.9
10.7
13.3
11.1
23.7
18.3
9.9
(
20
°
C/W)
Altera Corporation
Dimensions
θ
JB
Board
(mm)
17.3
16.3
17.3
16.3
13.5
12.7
12.4
12.6
11.8
12.4
79
79
77
74
9.8
9.2
8.5
6.8
6.7
7.5
5.9
(
6
°
C/W)