NCP51705
www.onsemi.com
21
PACKAGE DIMENSIONS
QFN24, 4x4, 0.5P
CASE 485L
ISSUE B
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED TERMINAL
AND IS MEASURED BETWEEN 0.25 AND 0.30 MM
FROM THE TERMINAL TIP.
4. COPLANARITY APPLIES TO THE EXPOSED PAD
AS WELL AS THE TERMINALS.
SEATING
PLANE
D
B
0.15 C
A
A3
A
E
PIN 1
REFEENCE
2X
0.15 C
2X
0.08 C
0.10 C
C
DIM MIN MAX
MILLIMETERS
A 0.80 1.00
A1 0.00 0.05
A3 0.20 REF
b 0.20 0.30
D 4.00 BSC
D2 2.70 2.90
E 4.00 BSC
E2 2.70 2.90
e 0.50 BSC
L 0.30 0.50
24X
L
D2
b
1
7
13
19
e/2
E2
e
24
0.10 B
0.05
AC
C
L1
DETAIL A
L
ALTERNATE
CONSTRUCTIONS
L
DETAIL B
MOLD CMPDEXPOSED Cu
ALTERNATE TERMINAL
CONSTRUCTIONS
A1
A3
TOP VIEW
SIDE VIEW
DETAIL B
BOTTOM VIEW
DETAIL A
SOLDERING FOOTPRINT
DIMENSIONS: MILLIMETERS
2.90
4.30
4.30
0.50
0.55
0.32
24X
24X
PITCH
1
2.90
RECOMMENDED
NOTE 4
A1
24X
NOTE 3
L1 0.05 0.15
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