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EXAMPLE STENCIL DESIGN

20X (0.6)

20X (0.2)

16X (0.4)

(2.8)

(2.8)

4X ( 0.75)

(0.47)

TYP

(0.47) TYP

(R

) TYP

0.05

WQFN - 0.8 mm max height

RUK0020B

PLASTIC QUAD FLATPACK - NO LEAD

4222676/A 02/2016

NOTES: (continued)

6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate

design recommendations.

21

SYMM

METAL

TYP

SOLDER PASTE EXAMPLE

BASED ON 0.1 mm THICK STENCIL

EXPOSED PAD 21:

78% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE

SCALE:20X

SYMM

1

5

6

10

11

15

16

20