80C186EC/188EC, 80L186EC/188EC
T
(the ambient temperature) can be calculated
A
Package Thermal Specifications
from i (thermal resistance from the case to ambi-
CA
ent) with the following equation:
The 80C186EC/80L186EC is specified for operation
when T (the case temperature) is within the range
C
e
b
P * i
T
T
C
b
a
A
CA
of 40 C to 100 C. T may be measured in any
C
§
§
environment to determine whether the processor is
within the specified operating range. The case tem-
perature must be measured at the center of the top
surface.
Typical values for i
in Table 9. P (the maximum power consumptionÐ
specified in Watts) is calculated by using the maxi-
at various airflows are given
CA
mum I
and V
of 5.5V.
CC
CC
Table 9. Thermal Resistance (i ) at Various Airflows (in C/Watt)
§
CA
Airflow in ft/min (m/sec)
0
200
400
600
800
1000
(0)
(1.01)
(2.03)
(3.04)
(4.06)
(5.07)
i
i
i
(PQFP)
(QFP)
27.0
64.5
62.0
22.0
55.5
TBD
18.0
51.0
TBD
15.0
TBD
TBD
14.0
TBD
TBD
13.5
TBD
TBD
CA
CA
CA
(SQFP)
24
INTEL [ INTEL ]
