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Sale % PC817 - 4 Channel Optocoupler Isolation Board ~~$ 1.60~~ $ 1.26 1.26 USD	PC817 - 2 Channel Optocoupler Isolation Board $ 0.95 0.9500000000000001 USD	TLP521-4 4 Optocouplers in Single Chip $ 1.58 1.58 USD	MOC3022 Non-Zero Crossing Triac OptoIsolator $ 0.19 0.19 USD
Optocoupler 6N137 $ 0.25 0.25 USD	Optocoupler 4N25 $ 0.11 0.11 USD	CNY17-3 Optocoupler Phototransistor Output, With Base Connection $ 0.17 0.17 USD	PC817 = EL817C-F Optocoupler $ 0.04 0.04 USD
Optocoupler 4N35 $ 0.11 0.11 USD	MOC3063 Zero Crossing Triac OptoIsolator $ 0.19 0.19 USD