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Resistor -- MFR1-4W-E96-681R 681 Ohms 0.25W
Synton
Resistor Synton RES0-5W-681R-0P1 681 Ohms 0.5W
Yageo Corp.
Resistor Yageo Corp. MF0207-681R 681 Ohms 0.6W
Yageo (vitrohm) Europe
Resistor Yageo (vitrohm) Europe MF0207FTE52-681R 681 Ohms 0.66W