Handling and Storage
ESD (Electrostatic Discharge)
Electrostatic discharge occurs naturally in the environ-
ment. With the increase in voltage potential, the outlet of
neutralization or discharge will be sought. If the acquired
discharge route is through a semiconductor device, de-
structive damage will result.
ESD countermeasure methods should be developed and
used to control potential ESD damage during handling in
a factory environment at each manufacturing site.
MSL (Moisture Sensitivity Level)
Plastic encapsulated surface mount package is sensitive to
damage induced by absorbed moisture and temperature.
Avago Technologies follows JEDEC Standard J-STD 020B.
Each component and package type is classified for
moisture sensitivity by soaking a known dry package at
various temperatures and relative humidity, and times.
After soak, the components are subjected to three con-
secutive simulated reflows.
The out of bag exposure time maximum limits are deter-
mined by the classification test describe below which cor-
responds to a MSL classification level 6 to 1 according to
the JEDEC standard IPC/JEDEC J-STD-020B and J-STD-033.
WS1105 is MSL3. Thus, according to the J-STD-033 p.11
the maximum Manufacturers Exposure Time (MET) for this
part is 168 hours. After this time period, the part would
need to be removed from the reel, de-taped and then
re-baked. MSL classification reflow temperature for the
WS1105 is targeted at 260°C +0/-5°C. Figure 19 and Table
7 show typical SMT profile for maximum temperature of
260 +0/-5°C.
Table 5. ESD Classification
Pin #
Name
Description
1
Vcc1
Supply Voltage
2
RFIn
RF Input
3
Vcont
Control Voltage
4
Vref
Reference Voltage
5
GND
Ground
6
GND
Ground
7
RF Out
RF Output
8
Vcc2
Supply Voltage
Note :
1. Module products should be considered extremely ESD sensitive
HBM
± 2000V
± 2000V
± 2000V
± 2000V
± 2000V
± 2000V
± 2000V
± 2000V
CDM
± 200V
± 200V
± 200V
± 200V
± 200V
± 200V
± 200V
± 200V
Classification
Class 2
Class 2
Class 2
Class 2
Class 2
Class 2
Class 2
Class 2
Table 6. Moisture Classification Level and Floor Life
MSL Level
Floor Life (out of bag) at factory ambient =< 30°C/60% RH or as stated
1
Unlimited at =< 30°C/85% RH
2
1 year
2a
4 weeks
3
168 hours
4
72 hours
5
48 hours
5a
24 hours
6
Mandatory bake before use. After bake, must be reflowed within the time limit specified on the label
Note :
1. The MSL Level is marked on the MSL Label on each shipping bag.
12