Cirrus Logic CS42L56 - Manual (Page 91)

DS851F2 91
CS42L56
11.PACKAGE DIMENSIONS
(Unless otherwise specified, linear tolerance is ±0.05 mm, and angular tolerance is ±2 deg.)
1. Controlling dimensions are in millimeters.
2. Dimensioning and tolerances per ASME Y 14.5M-1994.
3. Dimension lead width applies to the plated terminal and is measured 0.25 mm and 0.30 mm from the
terminal tip.
THERMAL CHARACTERISTICS
INCHES MILLIMETERS NOTE
Dim MIN NOM MAX MIN NOM MAX
A 0.01575 0.01772 0.01969 0.40 0.45 0.50 1 , 2
A1 0.00000 - 0.00197 0.00 - 0.05 1 , 2
b 0.00591 0.00787 0.00984 0.15 0.20 0.25 1 , 2 , 3
e 0.01575 BSC 0.40 BSC 1 , 2
D 0.19685 BSC 5.00 BSC 1 , 2
E 0.19685 BSC 5.00 BSC 1 , 2
D2 0.13583 0.13780 0.13976 3.45 3.50 3.55 1 , 2
E2 0.13583 0.13780 0.13976 3.45 3.50 3.55 1 , 2
L 0.01181 0.01378 0.01575 0.30 0.35 0.40 1 , 2
JEDEC #: MO-220
Controlling Dimension is Millimeters.
Parameter Symbol Min Typ Max Units
Junction to Ambient Thermal Impedance 2 Layer Board
4 Layer Board 
JA

JA
-
- 68
28 -
- °C/Watt
°C/Watt
e b
A
A1
PIN #1
IDENTIFIER
0.500.10
LASER
MARKING
E
2.
0
0 R
E
F
D2
L
PIN #1 CORNER
2.00 REF
E2
D
40L QFN (5 X 5 mm BODY) PACKAGE DRAWING