Identify unknown SMD component code A6530 72130
"F1" indicates some kind of fuse, and that "B" is the Bourns logo. Googling "Bourns A6530" leads to the TBU-CA datasheet, which says:


  The TBU-CA Series of Bourns® TBU®
  products are low capacitance single
  bidirectional high-speed protection
  components, constructed using MOSFET
  semiconductor technology, and designed
  to protect against faults caused by short
  circuits, AC power cross, induction and lightning surges.
  
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