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EPCOS Type C990 PTC Thermistors They are marked APTC / C990. They are used as overcurrent and short-circuit protection, rated at In=30mA, Vm=80V. EPCOS number B59990C0080A070. They measure 4 mm (.157") diameter. 3.5 mm (.118") thick with lead spacing 5 mm (.196"). Please reference our part number 2271. |