1/2TYDES550 3M, 1/2TYDES550 Datasheet - Page 2

• Manufacturer Part Number: 1/2TYDES550
• Description: DESICCANT 1/2 TYVEKBAG 550/PAIL
• Manufacturer: 3M

Specifications of 1/2TYDES550

• Cleaner, Treatment Type: Desiccant
• Applications: Absorb Moisture
• Color: White
• Size: 1/2 unit
• Body Material: Montmorillonte Clay / Plastic
• External Height: 80mm
• External Width: 33mm
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 51111765593; 80000955452

Desiccant
DESICCANT, TYVEK OR KRAFT POUCH
PRODUCT
What is Desiccant?
Desiccant is a drying agent that is used to absorb moisture from the air inside moisture barrier bags. Desiccant absorbs moisture vapor (humidity) from the air left inside the bar-
rier bag after it has been sealed. Any moisture that penetrates the bag will also be absorbed. Desiccant remains dry to the touch even when it is fully saturated with moisture
vapor.
How much Desiccant do I need?
Desiccant is sold by the “Unit” or fractional Unit, or in grams. One unit of desiccant will absorb a specific amount of moisture. A unit weighs about 33 grams. There are several stan-
dards for calculating the desiccant loading for bags. Each standard is for a specific application, and requires different amounts of desiccant for the same bag size. Once you deter-
mine which standard is correct for your dry packing application, apply these formula, or go to www.StaticControl.com and select the Desiccant Calculator.
Why are electronic devices moisture sensitive?
Certain kinds of electronic devices called “Surface Mount Devices” or SMD’s are mounted on a circuit card by high temperature soldering. The body of the SMD is made from
plastic that absorbs moisture from the air. When the case is heated during soldering, the moisture inside turns to steam, and may break the device as the steam escapes.
Keeping SMD’s dry before soldering means that the devices will not be damaged.
Desiccant
IPC/JEDEC J-STD-033
Application:
Dry packaging for SMD’s.
What You Need Know:
Bag Size, Bag MVTR, Storage Time in Months.
Formula:
Units=
Example:
8” x 10” inch Barrier Bag, with a 0.002 MVTR and a
12 month storage time.
Find Bag Area:
8” x 10” x 2 sides =160 sqin.
Apply Formula:
Units=
Units = .2
Calculating Desiccant Loading
0.304 x Months x Bag MVTR x Bag Area
0.304 x 160 sqin x 0.002 MVTR x 12 months
Use 1/6 unit of Desiccant.
in Tyvek Plastic or Kraft Paper Pouch
Moisture Capacity
6.6667 g/unit
P
R
O
EIA 583
Application:
Dry packaging for SMD’s. Allows adjustment of environmental conditions.
What You Need Know:
Bag Area, Bag MVTR, Months of Storage, Maximum Interior Humidity
(MIH).
Formula:
Units=
Example:
8” x 10” inch Barrier Bag, with a 0.02 MVTR, a 12 month storage time, and
a MIH of 20%.
Find Bag Area:
8” x 10” x 2 sides =160 sqin.
Select Moisture Capacity based on MIH:
10% MIH: 3.0 g/unit 20% MIH 4.8 g/unit 30% MIH 5.8 g/unit 40% MIH 6.2 g/unit
Apply Formula:
Units=
Units = 1.8 units
D
ITEM NUMBER
SEE PAGE
U
0.231 x Bag Area x Bag MVTR x Months
0.231 x 160 sqin x 0.02 MVTR x 12 months
C
1
Moisture Capacity
T
Use 2 units of desiccant.
4.8 g/unit
DATASHEET
1110-F
D
A
T
3M Electronics Solutions Division
6801 River Place Blvd
Austin, TX 78726-9000
US and Canada: 866-722-3736
Fax: [phone]
Intl: 919-718-0000; Fax: [phone]
email: [e-mail]; www.3M.com/static
A
S
H
E
E
MIL-P-116
Application:
General dry packaging.
What You Need Know:
Bag Size
Formula:
Units = 0.011 x Bag Area in square inches.
Example:
8” x 10” inch Barrier Bag
Find Bag Area:
8” x 10” x 2 sides =160 sqin.
Apply Formula:
Units = 0.011 x 160 sqin = 1.8
Use 2 Units of desiccant.
T
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© 2008