Packaging and shipping of the hottest components

2022-08-06
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Packaging and shipping of components (Part 2)

most I process protection C manufacturers' packaging has been tested and graded according to their sensitivity to moisture induced damage. Table 4 lists the typical classification of Surface Mount Technology (SMT) packaging with examples. Table 4. Humidity sensitivity classification of SMT products

up to now, no component packaging has used the fifth Level 6

() = number of pins

level 1

Level 2

Level 3

fn (20/28)

fn (44/68)

soic

d (9/14/16)

dw (16/20/24/28)

ssop

dbq (16/20/24)

db (14/16/20/24)

db (28/30/38)

tssop

dl (28/48/56)

dct (8)

pw (8/14/16)

dgg (64)

pw (20/24)

dgg (48/56)

dry packaging: including baking packaging to reduce humidity. The type II sample is a rectangular strip sample with equal cross-section to a level not exceeding 0.05% of the weight. Then, these units are put into a moisture-proof bag, together with the desiccant, to keep the humidity in the bag less than 10%rh. Each product shall be marked with a label that is sensitive to moisture, and the precautions necessary for handling the product shall be briefly described. Table 5 shows the typical floor life for different package moisture sensitivity levels

table v Typical site life for different package moisture sensitivity levels

site life

moisture absorption time

level

condition

time

time (hours)

condition

1

= 30 ° c/90%rh

infinite

168

85 ° c/85%rh

2

= 30 ° c/60%rh

one year

168

x + y = z

85 ° c/60%rh

3

= 30 ° c/60%rh

168 hours

24 + 168 = 192

30 ° c/60%rh

4

= 30 ° c/60%rh

72 hours

24 + 72 = 96

30 ° c/60%rh

5

= 30 ° c/60%rh

24 hours

24 + 24 = 48

30 ° c/60%rh

6

= 30 ° c/60%rh

6 hours

0 + 6 = 6

30 ° c/60%rh

here

x = time between baking and drying at the manufacturing base

y = site life of packaging after removal from the dry packaging bag

z = total moisture absorption time

note: the x value shown above is the default value.The. If the actual time exceeds this value,

use the actual time and adjust the moisture absorption time Z

here

x = time between baking and drying at the manufacturing base

y = site life of packaging after removal from the dry packaging bag

z = total moisture absorption time

note: the x value shown above is the default value. If the actual time exceeds this value,

use the actual time and adjust the moisture absorption time Z

typical packaging methods require the following materials:

material box (plastic pipe), tray, roll

desiccant

moisture proof bag

label (moisture sensitive identification [msid, moisture sensitive identification] label, dry packaging warning label)

humidity indicator card

identification of humidity sensitivity: the main and instant containers of humidity sensitive packaging are marked with standard humidity labels defined by JEDEC standards. The MSID label shall be applied to the appearance of the instant container, usually near the barcode label, to indicate that the moisture sensitive package is inside. Moisture sensitive warning labels are usually applied to the outside of sealed moisture-proof bags; It usually takes 10 (30) minutes for one sample to complete. The label includes detailed information unique to the element (humidity sensitivity level, site life, etc.). The moisture indicator card is placed on the inner surface of the sealed moisture-proof bag to ensure that the product can be stored and transported in low moisture environment

environment: the IC industry strives to optimize the guaranteed density of each structure to reduce the flow of packaging materials into the river of industrial waste. Where possible, use pure materials such as ps/pvc for easy handling. Fiber material suppliers are encouraged to combine renewable materials to reduce their consumption of pure raw materials. Table 6 lists the typical packaging materials used and their respective recycling code assignments

table VI Environmental code of packaging materials

structure

materials

regeneration code

material box

pvc

3

end plug

p blue ocean even though there is a lot of money cv

3

tray

7 (other)

reel

ps

6

loading belt

ps

6

cover belt

pet layer

7 (other)

dry packaging bag

pet layer

7 (other)

source: PCB information

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