LH1684F View Datasheet(PDF) - Sharp Electronics
Part Name
Description
MFG CO.
'LH1684F' PDF : 34 Pages View PDF
SliARf=
LH1684F
28
7. External appearance inspection
ion of the rsternal aopearance of the packare
Item
Insoection standards
I. Exposure of the inner lea . Faulty if.the chip or inner leads are completely
and device holes
exposed.
. Faulty if the device holes are not completely
filled with resin. ’
2. Air bubbles
*Faulty if there are air bubbles extending as far as
the suaface of the chip.
*Faulty if there are air bubbles at the inner leads.
e shown below.
Remarks
t
1
Faulty
3. Seal resin area
&.Seal resin thickness
5. Adherance of resin or
foreign matter except
the seal resin area.
i. Undrside of the chip
‘. Scratches, cracks and
chipping in the tape carrie
L Pattern deformation
9. Discoloration
0. Markings
-Faulty if the area of the seal resin area exceeds
the specifications.
*Faulty if the thickness of the device exceeds the
specifications.
‘Faulty if there is anything adhering to the tin
plating.
‘Faulty if any resin or forein matter adhered to the
copper pattern is wider than the width of the
pattern. (If the forein matter is easily moved, it is
not a cause for concern.)
Faulty if there are any cracks in the chip.
Faulty if there is any chipping in the underside of
the chip that is lager than one-half the thickness
of the chip.
Faulty if adherance of the resin to the underside
of the chip that causes the thickness of the device
exceed the specifications.
Faulty if there are any scratches exposing the
sustrate (chip, pattern. or inner leads) at the seal
resin.
Faulty if there are any scratches extending as far
as the copper foil at the sorder resists.
Faulty if there are any cracks or chipping at the
perforations.
FdUky if the pattern overhanging the slits is
markedly deformed
Faulty if the tin plating is markedly discolored.
Faulty if the cover coating is markedly
discolored.
Faulty if the markings are illegible.
Jpperside: 16.5 X 5.2 mmMAX
Jnderside: 16.5 X5.2 mmMAX
Upperside:0.30 mmMAX
Underside:0.75 mmMAX
Total thickness: 1.20 mmMAX
T/ZMAX
Faulty
f
Creased
n
Faulty
1. Missing parts of output
leads
12. Other
Faulty if the width of the output lead is reduced
to less than one-half of the standard.
Faulty if copper foil remnants reduce the clearanc
between the output leads to less than two-thirds o
the standards.
FdUlty if there is any warping, twisting. bending,
etc.. of the tape that would impair use.
Faulty if there are no indication holes at the non-
effective indication holes.
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