DocID027044 Rev 3

7/10

ESDA7P60-1U1M

Recommendation on PCB assembly

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Recommendation on PCB assembly

3.1

Stencil opening design

1.

General recommendation on stencil opening design

a)

Stencil opening dimensions: L (Length), W (Width), T (Thickness).

Figure 14. Stencil opening dimensions

b)

General design rule

Stencil thickness (T) = 75 ~ 125 µm

2.

Reference design

a)

Stencil opening thickness: 100 µm

b)

Stencil opening for leads: Opening to footprint ratio is 90%.

Aspect Ratio

W

T

----- 1.5

≥

=

Aspect Area

LW

×

2T L W

+

()

---------------------------- 0.66

≥

=

Figure 15. Recommended stencil window

position

Figure 16. Alternative stencil window position