6.4 Recommended Stencil Opening

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EXAMPLE STENCIL DESIGN

.000 PKG

0

(

)

1.767

(

)

1.107

(

)

1.729

(

)

1.86

(

) TYP

2.25

(

) TYP

2.7

(

)

0.247

(

)

0.907

20X (0.25)

15X (0.5)

2X (

)

0.27

2X (

)

1.69

(

)

2.15

(

)

0.48

(

)

0.23

(

)

0.53

(

)

0.932

(

)

1.08

5X (0.25)

4X (0.5)

(R0.05) TYP

20X (0.55)

(

)

0.58

(

)

2.425

4224521/A 09/2018

VQFN-CLIP - 1.05 mm max height

RCB0027A

PLASTIC QUAD FLATPACK - NO LEAD

NOTES: (continued)

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

design recommendations.

SOLDER PAST EXAMPLE

ON 0.125 mm THICK STENCIL

PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE

S 6-7 & 13-15: 70%

26: 70%

SCALE: 20X

EXPOSED

METAL

SOLDER MASK

OPENING

TYP

EXPOSED

METAL

1

5

7

8

12

13

18

15

16

19

25

26

27

6

METAL UNDER

SOLDER MASK

TYP

• All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning

and tolerancing per ASME Y14.5M.

• This drawing is subject to change without notice.

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

may have alternate design recommendations.

CSD95420RCB

SLPS735 – NOVEMBER 2020

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8

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