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80C186EC 188EC 80L186EC 188EC
Package Thermal Specifications
The 80C186EC 80L186EC is specified for operation
when T
(the case temperature) is within the range
C
of
40 C to
100 C T
b
a
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
Table 9 Thermal Resistance (i
i
(PQFP)
CA
i
(QFP)
CA
i
(SQFP)
CA
24
may be measured in any
0
200
(0)
(1 01)
27 0
22 0
64 5
55 5
62 0
TBD
T
(the ambient temperature) can be calculated
A
from i
(thermal resistance from the case to ambi-
CA
ent) with the following equation
T
T
P
i
e
b
A
C
CA
Typical values for i
CA
in Table 9 P (the maximum power consumption
specified in Watts) is calculated by using the maxi-
mum I
and V
of 5 5V
CC
CC
) at Various Airflows (in C Watt)
CA
Airflow in ft min (m sec)
400
600
(2 03)
(3 04)
18 0
15 0
51 0
TBD
TBD
TBD
at various airflows are given
800
1000
(4 06)
(5 07)
14 0
13 5
TBD
TBD
TBD
TBD
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