VM-840 Datasheet, PDF (4/5 Pages) Vectron International, Inc – MEM’s Clock Oscillator

Table 4. Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Gross and Fine Leak
Resistance to Solvents
Moisture Sensitivity Level
Reliability
Conditions
MIL-STD-202, Method 2002
MIL-STD-883, Method 2007
MIL-STD-883, Method 1010
MIL-STD-883, Method 1014
MIL-STD-202, Method 215
MSL1
Handling Precautions
Although ESD protection circuitry has been designed into the VM-840, proper precautions should be taken when handling
and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for ESD susceptibility testing and design
protection evaluation. ESD thresholds are dependent on the circuit parameters used to define the model.
Table 5. ESD Ratings
Model
Human Body Model
Charged Device Model
Machine Model
Minimum
2000V
500V
200 V
Suggested IR Profile
Devices are built using lead free epoxy and can also be subjected to standard lead free IR reflow conditions. Figure 6 shows max
temperatures and lower temperatures can also be used e.g. peak temperature of 220C.
Table 6. Reflow Profile
Parameter
Symbol
PreHeat Time
t
S
Ts-min
Ts-max
Ramp Up
Time Above 217 °C
Peak Temperature
Time To Peak Temperature
Time at Peak Temperature
Ramp Down
R
UP
t
L
t_P
T
25C to Peak
t
P
R
DN
Value
60 sec Min, 260 sec Max
150°C
200°C
3 °C/sec Max
60 sec Min, 150 sec Max
255-260°C
480 sec Max
20 sec Max
6 °C/sec Max
Figure 4
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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