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参数资料
| 型号： | VCMGCA-6.176MHZ |
| 厂商： | VECTRON INTERNATIONAL |
| 元件分类： | XO, clock |
| 英文描述： | VCXO, CLOCK, 6.176 MHz, CMOS/TTL OUTPUT |
| 封装： | ROHS COMPLIANT, HERMETIC SEALED, CERAMIC, LCC-6 |
| 文件页数： | 5/6页 |
| 文件大小： | 100K |
| 代理商： | VCMGCA-6.176MHZ |
V-Type Voltage Controlled Crystal Oscillator
Vectron International 267 Lowell Road, Hudson NH 03051
Tel:1-88-VECTRON-1
e-mail: vectron@vectron.com
25
217
200
150
260
Te
mperat
ure
(De
g
C)
Time (sec)
t S
t AMB-P
t L
t P
R UP
R DN
Reliability
The V-Type is capable of meeting the following qualification tests.
Table 3. Environmental Compliance
Parameter
Conditions
Mechanical Shock
MIL-STD-883 Method 2002
Mechanical Vibration
MIL-STD-883 Method 2007
Solderability
MIL-STD-883 Method 2003
Gross and Fine Leak
MIL-STD-883 Method 1014
Resistance to Solvents
MIL-STD-883 Method 2016
Handling Precautions
Although ESD protection circuitry has been designed into the the V-Type, 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. Although no industry wide standard has been adopted
for the CDM, a standard HBM of resistance = 1.5kohms and capacitance = 100pF is widely used and
therefore can be used for comparison purposes.
Table 4. ESD Ratings
Model
Minimum
Conditions
Human Body Model
1500
MIL-STD-883 Method 3115
Charged Device Model
1000
JESD 22-C101
The V-Type is qualified to meet the JEDEC standard for Pb-Free assembly. The temperatures and time
intervals listed are based on the Pb-Free small body requirements and parameters are listed in the table
below. The contact pads are gold over nickel so lower IR reflow temperatures such as 220°C can be
used (device is backwards compatible with a lead solder assembly).
The V-Type is hermetically sealed so an aqueous wash is not an issue.
Table 5. Reflow Profile (IPC/JEDEC J-STD-020C)
Parameter
Symbol
Value
PreHeat Time
t S
60 sec Min, 180 sec Max
Ramp Up
R UP
3
oC/sec Max
Time Above 217
oC
t L
60 sec Min, 150 sec Max
Time To Peak Temperature
t AMB-P
480 sec Max
Time At 260
oC
t P
20 sec Min, 40 sec Max
Ramp Down
R DN
6
oC/sec Max
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