DS641F2

35

CS8421

1.

Dimensioning and tolerance per ASME Y 14.5M-1995.

2.

Dimensioning lead width applies to the plated terminal and is measured between 0.23mm and 0.33mm

from the terminal tip.

QFN THERMAL CHARACTERISTICS

INCHES

MILLIMETERS

NOTE

DIM

MIN

NOM

MAX

MIN

NOM

MAX

A

----

0.0394

----

1.00

1

A1

0.0000

--

0.0020

0.00

--

0.05

1

b

0.0091

0.0110

0.0130

0.23

0.28

0.33

1, 2

D

0.1969 BSC

5.00 BSC

1

D2

0.1201

0.1220

0.1240

3.05

3.10

3.15

1

E

0.1969 BSC

5.00 BSC

1

E2

0.1202

0.1221

0.1241

3.05

3.10

3.15

1

e

0.0256 BSC

0.65 BSC

1

L

0.0197

0.0236

0.0276

0.50

0.60

0.70

1

JEDEC #: MO-220

Controlling Dimension is Millimeters.

Parameter

Symbol

Min

Typ

Max

Units

Junction to Ambient Thermal Impedance

2 Layer Board

4 Layer Board

-

-

128

35

-

-

°C/Watt

°C/Watt

Side View

A

A1

D2

L

b

e

Pin #1 Corner

Bottom View

Top View

Pin #1 Corner

D

E

E2

20-PIN QFN (5

× 5 MM BODY) PACKAGE DRAWING