TECHNICAL BULLETIN TB-2031
Statshield
®
Moisture Barrier Bags
Application Instructions
Made in the
United States of America
Notes:
Thickness - Typical value. Nominal ±10% per
MIL-STD-3010 1003
Moisture Barrier Transfer Rate (MVTR) - Measured
per ASTM F1249 (g/100 sq.in./24 hrs, at 100F)
Puncture Resistance – measured per
MIL-STD-3010 2065
Construction
Desco’s Statshield
®
Moisture Barrier Bags
manufactured from a static dissipative metalized
laminated film. The metal layer of the Desco’s
Statshield
®
Moisture Barrier Bags
and
Statshield
®
High
Moisture Barrier Bags
is created by vacuum deposited
manufacturing technique. This manufacturing
technique allows for a more flexible finished bag that is
less likely to tear or rip during use. Finished bags with
foil layer, such as Desco’s
Statshield
®
Foil Moisture
Barrier Bags
provides a better moisture barrier and
is a good choice when having to meet IPC/JEDEC
J-STD-033 Standard.
Static Dissipative
Polyester
Vacuum Deposited
Aluminum
Shielding
Layer
Polyester Layer
Vacuum Deposited
Aluminum Shielding Layer
High Performance Static
Dissipative Polyethylene
Figure 1. Desco Statshield
®
Moisture Barrier Bag
Description
Desco Statshield
®
Moisture Barrier Bags
combine the
properties of a MOISTURE BARRIER protection with
EMI-RFI-ESD shielding. Statshield
®
Moisture Barrier
Bags meet the electrical and physical requirements
of ANSI/ESD S20.20, Packaging standard ANSI/ESD
S541, and Static Control Bag ANSI/ESD S11.4. All
Statshield
®
Moisture Barrier Bags are amide, amine,
and silicone free and pass outgassing and corrosion
tests. All bags are printed with ESD protective symbol
and the Moisture-Sensitive Identification Label and are
dated and lot coded for quality control traceability.
All three styles are available in a variety of standard
sizes, custom sizes and with custom printing.
Desco offers three styles of Moisture Barrier Bags:
Moisture Barrier Bags
- Static Control Bag ANSI/ESD S11.4 Level 2
- Thickness .0035" (.0889mm)
- Moisture Barrier Transfer Rate (MVTR) ≤ 0.020
- Puncture Resistance >20 lbs
High Moisture Barrier Bags
- Static Control Bag ANSI/ESD S11.4 Level 2
- Thickness .0065" (.1651mm)
- Moisture Barrier Transfer Rate (MVTR) ≤ 0.014
- Puncture Resistance >30 lbs
Foil (EMI/RFI) Moisture Barrier Bag
- Static Control Bag ANSI/ESD S11.4 Level 1
- Thickness .0040" (.1061mm)
- Moisture Barrier Transfer Rate (MVTR) ≤ 0.0003
- Puncture Resistance >27 lbs
Figure 2. Statshield
®
MBB bag and High Moisture MBB
Bag Layer construction.
Abrasion Resistant Coating
Static Dissipative
Polyester Layer
Solid Aluminum
Foil Layer
High Performance
Static Dissipative
Polyethylene Interior Layer
Figure 3. Statshield
®
Foil (EMI/RFI) MBB Bag Layer
construction
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Web Site:
Desco.com
TB-2031
September 2013 Page 1 of 7
© 2013 DESCO INDUSTRIES INC.
Employee Owned
Dry Packing Information
The Statshield
®
Moisture Barrier Bag, Desiccant Packs
and Humidity Indicator Cards have been developed for
use in “DRY PACKAGING” applications. In order for
the MBB bag and its accessories to perform properly,
Desco recommends the user follow procedures defined
in IPC/JEDEC J-STD-033B.
DESICCANT
Desiccant
is a drying agent used to lower the moisture
content of air within a closed space, such as a
sealed Moisture Barrier bag. Desiccant is packaged
in fractional units in order to facilitate its usage with
a variety of bag sizes. One full “unit” of packaged
desiccant will absorb the following quantities of water
at equilibrium with air at 77°F (25°C): 3.00 grams @
20% rH and 6.00 grams @ 40% rH, when tested to
MIL-D-3464.
Desiccant packs are available from Desco in the
following unit sizes and standard packages:
Item #
13840
13843
13844
13850
Unit Size
1/2 unit - 1.5" x 3"
1 unit - 2" x 4"
1/2 unit - 2" x 4"
1/2 unit - 1.5" x 3"
Std. Package
Box of 700
Box of 450
Pail of 300
Pail of 550
Desiccant packs sold by Desco meet the requirements
of MIL-D-3464. For more detailed information, see
Drawing
13850.
HUMIDITY INDICATOR CARDS
Humidity Indicator Cards
contain chemically
impregnated, humidity sensitive, indicating spots that
will change color with moisture. The comparison bar is
used to determine relative humidity of air. Select the
indicating spot that most closely matches the color of
the comparison bar. The measured relative humidity
is the percentage indicated on the matching spot. The
chemical reaction of the indicating spots is completely
reversible; the spots will continue to change color as
the moisture levels change.
Figure 4. Desiccant packs
In order to provide a complete moisture barrier
packaging system, desiccant must be inserted into
the bag, prior to having the bag vacuum sealed. The
recommended amount of desiccant is dependent
on the interior surface area of the bag to be used.
Figure 5 is a reference table indicating recommended
minimum amounts of desiccant that should be used
with Moisture Barrier Bags.
INTERIOR BAG
SURFACE AREA
100
130
160
200
240
290
340
390
450
510
580
650
720
sq.
sq.
sq.
sq.
sq.
sq.
sq.
sq.
sq.
sq.
sq.
sq.
sq.
in.
in.
in.
in.
in.
in.
in.
in.
in.
in.
in.
in.
in.
NUMBER OF DESICCANT UNITS
*MIH <20% MIH <30% MIH < 40%
1.5
2.0
2.0
2.5
3.0
4.0
4.5
5.0
5.5
6.5
7.5
8.0
9.0
1.0
1.5
1.5
2.0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
1.0
1.0
1.5
1.5
1.5
2.0
2.5
2.5
3.0
3.5
4.0
4.0
4.5
13868
13869
13870
Figure 5. Humidity Indicator Cards
Item#
13868
13869
13870
Card Size
2" x 3"
2" x 3"
2" x 3"
Std. Package
125 pcs/can
125 pcs/can
100 pcs/can
Relative Humidity
5/10/15
5/10/60
10/20/30/40
COBALT-DICHLORIDE FREE
HUMIDITY INDICATOR CARDS
Cobalt-Dichloride Free Humidity Indicator
(HI) Cards
provide electronic and semiconductor manufacturers
with a JEDEC complaint humidity indicator card that is
free of Cobalt-Dichloride, a chemical regulated under
European Chemical Bureau (ECB) REACH-directives.
Figure 5. Table for recommended desiccant usage.
Information taken out of EIA-583, Table 1, Page 8
*MIH - Maximum Interior Humidity.
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Web Site:
Desco.com
TB-2031
Page 2 of 7
© 2013 DESCO INDUSTRIES INC.
Employee Owned
Foil Moisture Barrier Bag .0040" (.1016mm)
Electrical Properties
Resistance of polyester outer layer
< 1 x 10
11
ohms per ANSI/ESD STM11.11
Resistance of polyethylene inner layer
< 1 x 10
11
ohms per ANSI/ESD STM11.11
EMI Shielding (dB between 1 and 10 GHz)
45dB
Energy Penetration <20nJ per ANSI/ESD S11.31
Physical Properties
Thickness (nominal)
0.0040" (.1016mm) per MIL-STD-3010 2065
MVTR (grams / 100 in
2
/ 24 hrs, 100°F)
≤0.0003
per ASTM F 1249
Puncture Strength (lb)
≥25
per FTMS 101-C, MIL-STD-3010 2065
For more detailed information, see Drawing
13950.
High Moisture Barrier Bag .0065" (.1651mm)
Electrical Properties
Resistance of polyester outer layer
< 1 x 10
11
ohms per ANSI/ESD STM11.11
Resistance of polyethylene inner layer
< 1 x 10
11
ohms per ANSI/ESD STM11.11
EMI Shielding
45dB
Energy Penetration <20nJ per ANSI/ESD S11.31
Physical Properties
Thickness (nominal)
0.0065" (.1651mm) per MIL-STD-3010 1003
MVTR (grams / 100 in
2
/ 24 hrs, 100°F)
0.005 per ASTM F 1249
Puncture Strength (lb)
30 per FTMS 101-C, MIL-STD-3010 2065
For more detailed information, see Drawing
13760.
See Bag Selection Chart Click
HERE.
See Shielding Bag Storage at
TB-7057.
13858
13859
13861
13860
Figure 6. Cobalt-Dichloride Free Humidity Indicator
Cards
Item# Card Size
2" x 3"
13858
13859
2" x 3"
13860
2" x 3"
13861
1.56" x 4.75"
Std. Package Relative Humidity
125 pcs/can
5/10/15
125 pcs/can
5/10/60
100 pcs/can
10/20/30/40
200 pcs/can 10/20/30/40/50/60
Specifications
Moisture Barrier Bag .0035" (.0889mm)
Electrical Properties
Resistance of polyester layer
< 1 x 10
11
ohms per ANSI/ESD STM11.11
Resistance of polyethylene layer
< 1 x 10
11
ohms per ANSI/ESD STM11.11
EMI Shielding (dB between 1 and 10 GHz)
45dB
Energy Penetration <20nJ per ANSI/ESD S11.31
Physical Properties
Thickness (nominal)
0.0035" (.0889mm) per MIL-STD-3010 1003
MVTR (grams / 100 in
2
/ 24 hrs, 100°F)
≤0.02
per
ASTM F 1249
Puncture Strength (lb)
≥20
per FTMS 101-C, MIL-STD-2065
For more detailed information, see Drawing
13806.
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Web Site:
Desco.com
TB-2031
Page 3 of 7
© 2013 DESCO INDUSTRIES INC.
Employee Owned
Limited Warranty
Desco expressly warrants that for a period of one (1) year from the date of purchase, Desco shielding bags
and components will be free of defects in material (parts) and workmanship (labor). Within the warranty period,
the product will be tested, repaired, or replaced at Desco’s option, free of charge. Call our Customer Service
Department at 909-627-8178 (Chino, CA) or 781- 821-8370 (Canton, MA) for a Return Material Authorization
(RMA) and proper shipping instructions and address. Include a copy of your original packing slip, invoice, or
other proof of purchase date. Any unit under warranty should be shipped prepaid to the Desco factory. Warranty
repairs will take approximately one week.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL OTHER PRODUCT WARRANTIES,
EXPRESSED AND IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express warranty will not apply to defects or
damage due to accidents, neglect, misuse, alterations, operator error, or failure to properly maintain, clean or
repair products.
Limit of Liability
In no event will Desco or any seller be responsible or liable for any injury, loss or damage, direct or
consequential, arising out of the use of or the inability to use the product. Before using, users shall determine the
suitability of the product for their intended use, and users assume all risk and liability whatsoever in connection
therewith.
RoHS 2 and REACH Statement
None of the RoHS 2 restricted materials or REACH substances of very high concern as of 2013/06/20 are
intentionally added in manufacturing this product. Ref: European Union Directive 2011/65/EU and Regulation
(EC) No. 1907/2006/CE. See Desco
Limited Warranty at Desco.com.
DESCO
761 PENARTH
DESCO
WALNUT, CA 91789-3074 • (909)
02021-1407 •
•
(781) 821-8370 • Web Site:
•
Desco.com
AVE.,
EAST
- One Colgate Way, Canton, MA
598-2753
FAX (909) 595-7028
FAX REQUEST (909) 598-0864
TB-2031
Page 4 of 7
© 2013 DESCO INDUSTRIES INC.
Employee Owned
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
NFPA Designation 704
Material Safety Data Sheet
May be used to comply with
OSHA’s Hazard Communication Standard,
29 CFR 1910. 1200. Standard must be
consulted for specific requirements.
Degree of Hazard:
4 = Extreme
1 = Slight
3 = High
0 = Insignificant
2 = Moderate
Special Hazard
Health
(Blue)
0
0
Flammability
(Red)
1
0
Reactivity
(Yellow)
SECTION 1 — IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND THE COMPANY/UNDERTAKING
Product information
Commercial Product Name:
Company:
Reversible Humidity Indicator
Desco
3651 Walnut Ave.
Chinio, CA. 91710
(909) 627-8178
(909) 627-7449
Phone:
Fax:
SECTION 2 — COMPOSITION/INFORMATION ON INGREDIENTS
Chemical nature:
Components
cobalt(II) chloride
CAS-No.
7646-79-9
Cobalt dichloride on cardboard
Symbol(s)
T, N
R-phrase(s)
R49, R22, R42/43, R50-53
Concentration
>0.10 - <1.00%
SECTION 3 — HAZARDS IDENTIFICATION
None under normal use
SECTION 4 — FIRST AID MEASURES
General advice:
Eye contact:
Skin contact:
Inhalation:
Ingestion:
Notes to physician
Treatment:
None
Rinse immediately with plenty of water, also under the eyelids, for at
least 15 minutes
Wash off with soap and plenty of water
N.A.
Rinse mouth
None
SECTION 5 — FIREFIGHTING MEASURES
Suitable extinguishing media:
Extinguishing media which
must not be used for safety
reasons:
Use extinguishing measures appropriate to the envirnoment.
None
SECTION 6 — ACCIDENTAL RELEASE MEASURES
Environmental precautions:
Methods for cleaning up:
Do not flush into surface water or sanity sewer system
Take up contaminated material by mechanical means, load into clean containers,
and dispose of in accordance with legal regulations
DESCO
761 PENARTH AVE.,
EAST
- One
CA 91789-3074 • (909) 598-2753
• (781) 821-8370
595-7028
Desco.com
DESCO
WALNUT,
Colgate Way, Canton, MA 02021-1407
• FAX (909)
• Web Site:
• FAX REQUEST (909) 598-0864
TB-2031
Page 5 of 7
© 2013 DESCO INDUSTRIES INC.
Employee Owned
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
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