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QFN 

    QFN package is smaller and cooler than TSSOP. Texas Instruments, IDT and Hitachi have combined to introduce 20-, 16- and 14-pin quad flat no-lead (QFN) packaging for gate and octal bit width logic devices.
      Pitch = 0.40mm
      Pitch = 0.50mm
      Pitch = 0.65mm
      Pitch = 0.80mm
      Pitch = 0.85mm
      Pitch = 0.90mm
      Pitch = 1.0mm
      Pitch = 1.02mm
      Pitch = 1.1mm
      Pitch = 1.27mm
      Pitch = 1.3mm
      Pitch = 1.5mm Specifications for plastronics 
      Pitch = 1.91mm  
      Pitch = mixed (包括所有Pitch)  
　
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