Rev 1.5

vicorpower.com

Page 13 of 15

08/2015

800 927.9474

QPI-21

Pad and Stencil Definitions

13 places

45.000°

0.1250"

0.000

0.041

0.082

0.000

0.041

0.082

0.000

0.041

0.082

0.145

R0.041

2 places

0.000

0.043

0.085

0.149

0.000

0.043

0.086

0.000

0.043

0.086

R0.043

0.129"

0.112"

0.000

0.037

0.073

0.000

0.037

0.073

0.000

0.037

0.073

0.129

R0.037

SIP Pad Detail:

Receiving Pad Detail:

Stencil Detail:

1 place

Figure 23 — Recommended receptor and stencil patterns. (All dimensions are in inches.)

0.979" (OF)

0.996" (LID)

0.000"

0.000"

0.000"

0.000"

0.000"

0.100"

0.300"

0.441"

0.100"

0.300"

0.441"

0.000"

0.100"

0.300"

0.441"

0.100"

0.300"

0.441"

0.979" (OF)

0.996" (LID)

QPI-21 PCB

Receptor Paern

(Top View)

QPI-21 LGA

Paern

(Boom View)

Figure 22 — Bottom view of open-frame (OF) and lidded (LID) products. (All dimensions are in inches.)

Stencil definition is based on a 6mil stencil thickness, 80% of LGA

pad area coverage. LGA Package dimensions are for both the

Open-Frame and Lidded versions of the QPI-21.