E4257ALPT Semtech, E4257ALPT Datasheet - Page 22

• Manufacturer Part Number: E4257ALPT
• Manufacturer: Semtech

Specifications of E4257ALPT

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

PIN Descriptions
TEST AND MEASUREMENT PRODUCTS
E4287 Package Information
2005 Semtech Corp. / Rev. 5, 11/30/05
.17 MAX
–A–
1
A
N
.20 RAD. TYP .
.25
L
20 RAD. TYP .
6 ˚
D 1
D
4 ˚
–D–
E42X7 Package: 14 x 14 x 2.0 mm, 80 Pin, Int_TEP_MQFP
ddd M C A–B S D S
b
STANDOFF
A 1
–B–
E 1
(with Internal Heat Spreader)
A 2
E
LEAD COMPLANARITY
22
–C–
SEATING PLANE
ccc C
NOTES:
1)
2)
3)
4)
12
12
E4237/E4257/E4287
˚
˚
I D
d
c
D
A
A
E
M
A
D
E
e
b
d d
L
c c
1
2
1
1
. S
All dimensions in mm.
Dimensions shown are nominal
with tol. as indicated.
L/F: EFTEC 64T copper or
equivalent, 0.127 mm (.005”) or
0.15 mm (.006”) THICK.
Foot length “L” is measured at
gage plane at 0.25 above the
seating plane.
+
+
1 .
1 .
B
±
±
±
±
±
T
M
M
M
A
0
5
O
2 .
1 .
2 .
1 .
0 .
X A
S
X A
X A
– /
– /
. L
C I
5
0
5
0
5
0 .
1 .
5
0
e
www.semtech.com
0
0
2 .
1
1
1
1
2
2
˚
6
4
6
4
8 .
6 .
3 .
1 .
1 .
5
3 .
0 .
–
0 .
0 .
0 .
0 .
8
5
0
2
0
M
5
0
7
0
0
0
0
x a
˚
A