Mechanical Data - Texas Instruments TMS320 User Manual

68-pin GB grid array ceramic package (TMS32020, TMS320C25)
Thermal Resistance Characteristics
PARAMETER
Junction-to-free-air
R
JA
thermal resistance
Junction-to-case
R
JC thermal resistance
ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES

MECHANICAL DATA

MAX UNIT
36
C/W
6
C/W
4,953 (0.195)
2,032 (0.080)
3,302 (0.130)
2,794 (0.110) 0,508 (0.020)
0,406 (0.016)
L
K
J
H
G
F
E
D
C
B
A
1
POST OFFICE BOX 1443
TMS320 SECOND GENERATION
SPRS010B — MAY 1987 — REVISED NOVEMBER 1990
28,448 (1.120)
27,432 (1.080)
17,02 (0.670)
Nom
2 3 4 5 6 7 8 9 10 11

HOUSTON, TEXAS 77001
DEVICES
28,448 (1.120)
27,432 (1.080)
17,02
(0.670)
Nom
1,397 (0.055)
Max
1,575 (0.062)
Dia
1,473 (0.058)
2,54
(0.100)
T.P.
2,54
(0.100)
T.P.
1,524 (0.060)
Nom
4 Places
1,27
(0.050)
Nom
55