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    • 參數(shù)資料
      型號: VTM3-C31B-FREQ
      廠商: VECTRON INTERNATIONAL
      元件分類: TCVCXO, sine
      英文描述: TCVCXO, CLIPPED SINE OUTPUT, 8 MHz - 45 MHz
      封裝: ROHS COMPLIANT, HERMETIC SEALED, CERAMIC, SMD, 6 PIN
      文件頁數(shù): 7/8頁
      文件大?。?/td> 119K
      代理商: VTM3-C31B-FREQ
      VTM3 Data Sheet
      Vectron International 267 Lowell Rd, Hudson NH 03051
      Tel: 1-88-VECTRON-1
      e-mail vectron@vectron.com
      7
      Handling Precautions
      Although ESD protection circuitry has been designed into the the VTM3, 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 6. ESD Ratings
      Model
      Minimum
      Conditions
      Human Body Model
      1000
      MIL-STD-883 Method 3115
      Charged Device Model
      1000
      JESD 22-C101
      Suggested IR profile
      Devices are built using lead free epoxy and can also be subjected to standard lead free IR reflow
      conditions, Table 7 shows max temperatures and lower temperatures can also be used e.g. peak
      temperature of 220C.
      Table 7. Reflow Profile (IPC/JEDEC J-STD-020)
      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 (max)
      t P
      10 sec Max
      Time At 240 °C (max)
      tp2
      60 sec Max
      Ramp Down
      R DN
      6
      oC/sec Max
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