FW82546GB Intel, FW82546GB Datasheet - Page 44

• Manufacturer Part Number: FW82546GB
• Manufacturer: Intel

Specifications of FW82546GB

• Operating Supply Voltage (typ): 1.5/2.5/3.3V
• Operating Supply Voltage (min): 1.43/2.38/3V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 364
• Lead Free Status / RoHS Status: Not Compliant

82546GB — Networking Silicon
6.3
38
Table 23. Thermal Characteristics
Thermal Specifications
The 82546GB Gigabit Ethernet controller is specified for operation when the ambient temperature
(TA) is within the range of 0° C to 55° C. The maximum permitted junction temperature is 125° C.
TC (case temperature) is calculated using the equation:
TJ (junction temperature) is calculated using the equation:
The power consumption (P) is calculated by using the typical ICC and nominal VCC. The thermal
resistances are shown in
Thermal resistances are determined empirically with test devices mounted on standard thermal test
boards. Real system designs may have different characteristics due to board thickness, arrangement
of ground planes, and proximity of other components. The case temperature measurements should
be used to assure that the 82546GB Gigabit Ethernet controller is operating under recommended
conditions.
The use of a heat sink device can enhance the overall
tolerance of higher overall ambient air temperatures is desired. Intel does not qualify or
recommend any specific heat sink device for use with the 82546GB Gigabit Ethernet controller but
can provide a thermal report modeling a generic heat sink device and the
with the use of a heat sink device. Refer to the 82546EB/GB Gigabit Ethernet Controller Thermal
Properties with External Heat Sink Application Note for more information.


Symbol
JA
JC
TC = TA + P (
TJ = TA + P 
Thermal resistance, junction-to-
ambient
Thermal resistance, junction-to-
case
JA
JA
Parameter
- 
Table
JC
)
23.
17.7
6.8
0
Value at specified airflow (m/s)

JA
15.6
6.8
of the solution in situations where
1
14.8
6.8
2

JA
that might be achieved
14.0
6.8
3
Datasheet
C/Watt
C/Watt
Units