ALL DIMENSIONS ARE NOMINAL VALUES SHOWN IN MILLIMETERS

Note: The suggested land pattern dimensions have been provided for reference only, as actual pad layouts may vary depending on application.

These numbers may be modified based on user equipment capability or fabrication criteria. A more robust pattern may be desired for wave

soldering and is calculated by adding 0.2 mm to the ‘Z’ dimension. For further information, please reference document IPC-7351A, Naming

Convention for Standard SMT Land Patterns, and for International grid details, please see document IEC, Publication 97.

AP02001 Rev. 52

19 of 27

www.diodes.com

Suggested Pad Layout

© Diodes Incorporated

SC74R / SOT26 / SOT363 / SOT563

SOT25 / SOT353 / SOT553

Dimensions

SC74R / SOT26

SOT363

SOT563

Z

3.20

2.5

2.2

G

1.60

1.3

1.2

X

0.55

0.42

0.375

Y

0.80

0.6

0.5

C1

2.40

1.9

1.7

C2

0.95

0.65

0.5

Dimensions

SOT25

SOT353

SOT553

Z

3.20

2.5

2.2

G

1.60

1.3

1.2

X

0.55

0.42

0.375

Y

0.80

0.6

0.5

C1

2.40

1.9

1.7

C2

0.95

0.65

0.5

SOT666

Dimensions

Value (in mm)

C

0.50

G

0.80

X

0.35

Y

0.50

SOT953

Dimensions

Value (in mm)

C

0.350

X

0.200

Y

0.200

Y1

1.100

X

Z

Y

C1

C2

C2

G

X

Z

Y

C1

C2

C2

G

X

(6x)

Y (6x)

C

G

Y1

Y (5X)

C

C

X (5X)