As an Amazon Associate, we earn from qualifying purchases. Home » Fairchild Semiconductor » H22B4 Fairchild Semiconductor . H22B4 Optical Sensor Through-Beam 0.118\ Fairchild Semiconductor . H22B4 Attributes Brand name, Manufacturer name, ManufacturerFairchild Semiconductor Distributor offers SellerSKUMOQIn stockMultiplePrices HotendaH394292311 Digi-Key40132811