Vectron International 267 Lowell Road, Hudson, NH 03051 Tel: 1-88-VECTRON-1 http://www.vectron.com
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Reliability
The VMEMxQ qualification tests were performed per MIL-PRF-55310 & the following environmental tests
Table 4. Environmental Compliance
Parameter
Conditions
Mechanical Shock
MIL-STD-202, Method 213, Condition F except 30,000g, 0.1 ms
Mechanical Vibration
MIL-STD-883, Method 2007, Condition C, 100g
Thermal Shock
MIL-STD-202, Method 107, Condition B
Ambient Pressure Operating
MIL-STD-202, Method 105, Condition E
Gross and Fine Leak
MIL-STD-883, Method 1014, Condition A2 & C
Resistance to Solvents
MIL-STD-202, Method 215
Salt Atmosphere
MIL-STD-883, Method 1009, Condition A
Moisture Resistance
MIL-STD-202, Method 106
Low Temperature Storage Life
JESD22-A119, Condition B
Handling Precautions
Table 5. ESD Ratings
Model
Minimum
Human Body Model
2000V
Charged Device Model
500V
Machine Model
200 V
Although ESD protection circuitry has been designed into the the VMEMxQ, 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.
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.
Suggested IR Profile
Figure 6
Table 6. Reflow Profile
Parameter
Symbol
Value
PreHeat Time
Ts-min
Ts-max
t
S
60 sec Min, 260 sec Max
150°C
200°C
Ramp Up
R
UP
3 °C/sec Max
Time Above 217 °C
t
L
60 sec Min, 150 sec Max
Peak Temperature
t
P
255-260°C
Time To Peak Temperature
T
25C to Peak
480 sec Max
Time at Peak Temperature
t
P
20 sec Max
Ramp Down
R
DN
6 °C/sec Max