(TI)对半导体器件的长期存储评估.pdf - 第5页
Figure 6-5. Sample #47 Opened Box, MSL 1 Figure 6-6. Sample #42 Opened Box, MSL 3 Packing Figure 6-7. Sample #10 Opened MBB, HIC, Desiccant and Reel Figure 6-8. Sample #10 HIC Detail View The Humidity Identification Card…
Table 5-1. Product Samples (continued)
Sample
Batch #
Product Name Shelf Storage Age
(Years)
(2)
Terminal
Finish
Package
Type
Pin Count Soldering Results.
Units Tested/Fail
Moisture Sensitivity
Level
42 LOG2112AIDWR 11 NiPdAu SOIC 16 9 / 0 MSL3
43 TL1451ACDR 16 NiPdAu SOIC 16 9 / 0 MSL 1
44 SN94754IDR 15 NiPdAu SOIC 8 10 / 0 MSL3
45 LOG101AIDR 19 NiPdAu SOIC 8 10 / 0 MSL3
46 SN74AHC00D 21 NiPdAu SOIC 14 9 / 0 MSL 1
47 SN74HC02DR 21 NiPdAu SOIC 14 9 / 0 MSL 1
S1
(1)
BQ24202DGNR 18 Sn HVSSOP 8 6 / 0 MSL1
S2
(1)
MSC1210Y3PAGT 18 Sn TQFP 64 6 / 0 MSL3
S3
(1)
OPA2822U/2K5 18 NiPdAu SOIC 8 6 / 0 MSL3
S4
(1)
REG101NA-2.85/250 18 NiPdAu SOT-23 5 6 / 0 MSL3
S5
(1)
SN75LVDS179D 18 NiPdAu SOIC 8 5 / 0 MSL1
S6
(1)
TLV2463CDGSR 18 Sn VSSOP 10 6 / 0 MSL1
S7
(1)
TPS75933KTTT 18 Sn VSSOP 5 6 / 0 MSL2
S8
(1)
TSB12LV31PZ 19 Sn LQFP 100 6 / 0 MSL3
S9
(1)
SH6950DAAOPFP 17 NiPdAu HTQFP 80 6 / 0 MSL3
(1) The products S1 through S9 were the original 2008 risk assessment and were continuously stored in the Singapore Product
Distribution Center (PDC) and retested for this paper.
(2) Age determined as of March 2021.
6 Packaging Materials Evaluation
The sample products used in this study were retrieved from storage warehouses and shipped to the evaluating
TI reliability lab. Original packing materials from the actual production time were preserved and evaluated. Upon
receiving the material in the evaluating lab, the outer cardboard box, also referred to as shipping box, was
inspected and documented. Device information labels continued to properly adhere to the box after 20 years of
warehouse storage and were readable.
Figure 6-1. Sample #47 Image of Shipping Box as
Received
Figure 6-2. Sample #10 Image of Shipping Box as
Received
Figure 6-3. Sample #47 Label on Box
Figure 6-4. Sample #10 Label on Box
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Figure 6-5. Sample #47 Opened Box, MSL 1
Figure 6-6. Sample #42 Opened Box, MSL 3 Packing
Figure 6-7. Sample #10 Opened MBB, HIC,
Desiccant and Reel
Figure 6-8. Sample #10 HIC Detail View
The Humidity Identification Card (HIC) had been checked immediately after opening the MBB. No HIC samples
showed a change in the color dots indicating a change of the moisture content inside the MBB.
The functionality of the HIC samples had been checked by storing the cards at room conditions for 15 minutes
and in a 30°C/60% humidity oven for 15 minutes. The color dots from the tested HIC turned pink as expected for
the environment conditions they had been exposed to during the test. This proves that the HIC cards were still
functional after the long storage time in the MBB.
Figure 6-9. HIC Card Out of Sealed
MBB
Figure 6-10. HIC After 15 Minutes
at 30°C / 60% Rh
Figure 6-11. HIC After 15 Minutes
at Room Air Condition of 23°C/
≈30% Rh
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7 Tribocharge Evaluation – ESD Testing
The measurement for the originally used tape and reel packing material was made in accordance with
ANSI/ESD STM11.13-2018 Two-Point Resistance Measurement. This specific type of testing was used due
to the size of cover tape pockets.
Figure 7-1. Cover Tape Inside
Resistivity Measurement
Figure 7-2. Cover Tape Bottom
Figure 7-3. Cover Tape Pocket
Side Resistivity
The pocket tape (black) is in the conductive range, while the cover tape (clear) is in the dissipative range as
expected. No degradation was observable for the tested material.
A concentric ring setup was used to evaluate a large surface area of each original MBB. All bags were found to
be in the expected dissipative range.
Figure 7-4. Measurement of ESD Bag
8 Cover Tape Peel Strength Evaluation
8.1 Test Setup
A sample strip was cut from the original tape and reel and the peel force of the cover tape was measured during
the removal of the cover tape. The test is done to confirm that the cover tape adhesion did not change over the
long term storage of the reel. The peel force of the cover tape was measured within the 10 gram minimum force
and 130 gram maximum limit according industry standard EIA 481. The peeling speed of the cover tape was set
to 300 mm per minute. This test is also referenced as a peel-back test in the industry.
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