Laser
Stencil
For
SMT
Solder
Paste
PCB
Assembly
Stencil
Shim
1.1
General
description
This
is
a
type
of
solder
paste
SMT
stencil
(100%
laser
cut)
built
on
0.1mm
stainless
steel
foil
with
aluminum
frame
520
mm
x
420
mm
x
20mm
dimension.
It’s
fabricated
per
IPC
7525A
using
supplied
Gerber
data,
squeegee
area
locating
in
the
center.
Fiducal
marks
are
through
holes
to
suit
for
the
SMT
machine.
It’s
packed
with
KK
carton
(hard
card)
and
usually
2
stencils
are
packed
for
shipment.
1.2
Features
and
benifits
The
data
file
is
used
directly
to
produce
and
reduce
the
error
rate;
The
opening
position
accuracy
of
SMT
template
is
very
high:
the
whole
process
error
is
≤
±4
μ
m;
The
opening
of
SMT
template
has
geometric
figure,
which
is
advantageous
to
the
printing
and
forming
of
tin
paste;
Engineering
design
prevents
problems
from
occurring
in
pre
production;
Comprehensive
equipment
management
and
maintenance
and
process
control;
Diversified
shipping
method;
Professional
and
experienced
engineers;
Competitive
price;
Eligible
products
rate
of
first
production:
>99.99%
More
than
9000
types
per
month;
1.3
Application
SMD
package
such
as
PLCC,QFP,0402,0201,BGA,Flip
Chip.
1.4
Parameter
and
data
sheet
|
Dimension:
|
370mm
x
470mm,
420mm
x
520mm,
550mm
x
650mm
|
|
Structure
|
Stencil
foils
with
aluminum
frame
|
|
Base
material
|
Stainless
steel
shim
|
|
Foil
Thickness
|
0.05mm,
0.06mm,
0.08mm,
0.1mm,
0.12mm,
0.15mm,
0.18mm,
0.2mm
|
|
Aperture
configured
|
Laser
cut
|
|
Appearance
|
Engraving
and
electro
polishing
|
|
Fiducial
mark
|
Through
hole
|
|
Service
area:
|
Worldwide
|
|
Quantity
of
open
pads:
|
1235
|
|
Advantages:
|
a)
High
precision
dimension;
b)
Good
shape
on
the
window;
c)
Hole
wall
is
smoother.
|
|
Application:
|
CSP,
BGA,
0.5mm
QFP
etc.
package
|
1.5
Opening
Holes
Designs
for
SMT
Stencil
|
Component
Type
|
Pitch
|
Soldering
Width
|
Soldering
Length
|
Opening
Width
|
Opening
Length
|
Shim
Thickness
|
|
PLCC
|
1.27mm
|
0.65mm
|
2.00mm
|
0.60mm
|
1.95mm
|
0.15-0.25mm
|
|
QFP
|
0.635mm
|
0.35mm
|
1.50mm
|
0.32mm
|
1.45mm
|
0.15-0.18mm
|
|
QFP
|
0.50mm
|
0.254-0.33mm
|
1.25mm
|
0.22-0.25mm
|
1.20mm
|
0.12-0.15mm
|
|
QFP
|
0.40mm
|
0.25mm
|
1.25mm
|
0.20mm
|
1.20mm
|
0.10-0.12mm
|
|
QFP
|
0.30mm
|
0.20mm
|
1.00mm
|
0.15mm
|
0.95mm
|
0.07-0.12mm
|
|
0402
|
|
0.50mm
|
0.65mm
|
0.45mm
|
0.60mm
|
0.12-0.15mm
|
|
0201
|
|
0.25mm
|
0.40mm
|
0.23mm
|
0.35mm
|
0.07-0.12mm
|
|
BGA
|
1.27mm
|
0.80mm
|
|
0.75mm
|
0.75mm
|
0.15-0.20mm
|
|
BGA
|
1.00mm
|
0.38mm
|
|
0.35mm
|
0.35mm
|
0.10-0.12mm
|
|
BGA
|
0.50mm
|
0.30mm
|
|
0.28mm
|
0.28mm
|
0.07-0.12mm
|
|
Flip
Chip
|
0.25mm
|
0.12mm
|
0.12mm
|
0.12mm
|
0.12mm
|
0.08-0.10mm
|
|
Flip
Chip
|
0.20mm
|
0.10mm
|
0.10mm
|
0.10mm
|
0.10mm
|
0.05-0.10mm
|
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