
Spartan-II FPGA Family: Pinout Tables
DS001-4 (v2.8) June 13, 2008
Module 4 of 4
Product Specification
71
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Package Thermal Characteristics
Table 39 provides the thermal characteristics for the various
Spartan-II FPGA package offerings. This information is also
available using the Thermal Query tool on xilinx.com
The junction-to-case thermal resistance (
θJC) indicates the
difference between the temperature measured on the
package body (case) and the die junction temperature per
watt of power consumption. The junction-to-board (
θJB)
value similarly reports the difference between the board and
junction temperature. The junction-to-ambient (
θJA) value
reports the temperature difference between the ambient
environment and the junction temperature. The
θJA value is
reported at different air velocities, measured in linear feet
per minute (LFM). The “Still Air (0 LFM)” column shows the
θJA value in a system without a fan. The thermal resistance
drops with increasing air flow.
Table 39: Spartan-II Package Thermal Characteristics
Package
Device
Junction-to-Case
(
θJC)
Junction-to-
Board (
θJB)
Junction-to-Ambient (
θJA)
at Different Air Flows
Units
Still Air
(0 LFM)
250 LFM
500 LFM
750 LFM
VQ100
VQG100
XC2S15
11.3
N/A
44.1
36.7
34.2
33.3
°C/Watt
XC2S30
10.1
N/A
40.7
33.9
31.5
30.8
°C/Watt
TQ144
TQG144
XC2S15
7.3
N/A
38.6
30.0
25.7
24.1
°C/Watt
XC2S30
6.7
N/A
34.7
27.0
23.1
21.7
°C/Watt
XC2S50
5.8
N/A
32.2
25.1
21.4
20.1
°C/Watt
XC2S100
5.3
N/A
31.4
24.4
20.9
19.6
°C/Watt
CS144
CSG144
XC2S30
2.8
N/A
34.0
26.0
23.9
23.2
°C/Watt
PQ208
PQG208
XC2S50
6.7
N/A
25.2
18.6
16.4
15.2
°C/Watt
XC2S100
5.9
N/A
24.6
18.1
16.0
14.9
°C/Watt
XC2S150
5.0
N/A
23.8
17.6
15.6
14.4
°C/Watt
XC2S200
4.1
N/A
23.0
17.0
15.0
13.9
°C/Watt
FG256
FGG256
XC2S50
7.1
17.6
27.2
21.4
20.3
19.8
°C/Watt
XC2S100
5.8
15.1
25.1
19.5
18.3
17.8
°C/Watt
XC2S150
4.6
12.7
23.0
17.6
16.3
15.8
°C/Watt
XC2S200
3.5
10.7
21.4
16.1
14.7
14.2
°C/Watt
FG456
FGG456
XC2S150
2.0
N/A
21.9
17.3
15.8
15.2
°C/Watt
XC2S200
2.0
N/A
21.0
16.6
15.1
14.5
°C/Watt