13850 Desco, 13850 Datasheet - Page 2

• Manufacturer Part Number: 13850
• Description: DESICCANT PACK 550PCS/PK
• Manufacturer: Desco
• Series: Desi Pak®r

Specifications of 13850

• Cleaner, Treatment Type: Desiccant
• Applications: Absorb Moisture
• Body Material: Fill Contents
• Paper: Tyvek
• Features: Meets MIL-D-3464 Requirements
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With: Moisture Barrier Bags
• Other names: 16-1049

TB-2031 Page 2 of 3
Figure 3. Desiccant packs.
In order to provide a moisture barrier packaging
assembly 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
4 is a reference table indicating recommended
minimum amounts of desiccant that should be used
with Moisture Barrier Bags.
General Information
Failures in certain electronic devices and microcircuits
have been linked to the rapid expansion of internally
absorbed moisture during the soldering process.
Moisture absorption into these devices has been
traced to have taken place primarily during shipping
and storage in non-humidity controlled environments.
Additionally, “Dry Packaging” is usually required for
electronic assemblies or devices that are to be placed
into long term storage or for use in military
applications.
The Statshield
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 inside a closed space, such as an
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.
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Web Site: http://www.desco.com
®
Moisture Barrier Bag, Desiccant Packs
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]
Figure 4. Table for recommended desiccant usage.
Information taken out of EIA-583, Table 1, Page 8.
Figure 5. Humidity Indicator Cards
Desiccant packs are available from Desco in the
following unit sizes and standard packages:
ITEM #
13840
13842
13850
13852
Desiccant packs sold by Desco meet the requirements
of MIL-D-3464. For more detailed information, see
Drawing 13850.
HUMIDITY INDICATOR CARDS
Another integral part of a moisture barrier packaging
assembly system is the Humidity Indicator Card. The
Indicator Card contains 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.
INTERIOR BAG
SURFACE AREA
100 sq. in.
130 sq. in.
160 sq. in.
200 sq. in.
240 sq. in.
290 sq. in.
340 sq. in.
390 sq. in.
450 sq. in.
510 sq. in.
580 sq. in.
650 sq. in.
720 sq. in.
13868
1/2 unit - 1.5" x 3"
1/2 unit - 1.5" x 3"
1 unit - 3" x 4"
1 unit - 3" x 4"
UNIT SIZE
*MIH <20% MIH <30% MIH < 40%
NUMBER OF DESICCANT UNITS
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
13869
STANDARD PKG.
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
Box of 700
Box of 500
Pail of 550
Pail of 300
© 2008 DESCO INDUSTRIES INC.
13870
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
Employee Owned