Optical Switches – Mouser Ireland

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Optoelectronics

ROHM Semiconductor Optoelectronics offer a broad portfolio of display drivers, laser diodes, LEDs, LED displays, and optical sensors designed for use in a wide range of applications.

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Types of Optical Switches

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Sensing Method	Slot Width	Sensing Distance
Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER ULTRA MIN; SMD RPI-0125 ROHM Semiconductor 1: €0.894 11,200In Stock 16,500Expected 28/12/2026 End of Life	Mfr. Part No. RPI-0125 Mouser Part No 755-RPI-0125 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER ULTRA MIN; SMD	Datasheet	11,200In Stock 16,500Expected 28/12/2026	Cut Tape €0.894 €0.722 €0.595 Reel €0.594 €0.557 View €0.531 €0.491 €0.353	Min.: 1 Mult.: 1 : 750	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	1.2 mm
Optical Switches, Transmissive, Phototransistor Output Ultramin, SMD Type Photointerrupter RPI-0128 ROHM Semiconductor 1: €0.645 4,275In Stock 15,000Expected 16/12/2026 End of Life	Mfr. Part No. RPI-0128 Mouser Part No 755-RPI-0128 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output Ultramin, SMD Type Photointerrupter	Datasheet	4,275In Stock 15,000Expected 16/12/2026	Cut Tape €0.645 €0.543 €0.507 €0.439 Reel €0.349 View €0.417 €0.403 €0.374 €0.334	Min.: 1 Mult.: 1 : 7,500	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	1.2 mm
Optical Switches, Transmissive, Phototransistor Output UltraSmall 50mA 30V 950nm Phtinterrupter RPI-221 ROHM Semiconductor 1: €0.662 2,325In Stock End of Life	Mfr. Part No. RPI-221 Mouser Part No 755-RPI-221 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output UltraSmall 50mA 30V 950nm Phtinterrupter	Datasheet	2,325In Stock	€0.662 €0.556 €0.531 €0.481 View €0.444 €0.398 €0.383 €0.375	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	2 mm
Optical Switches, Transmissive, Phototransistor Output PHOTOINTPTR ULTRAMIN HIGH RES 4.9x2.6mm RPI-222 ROHM Semiconductor 1: €0.705 584In Stock End of Life	Mfr. Part No. RPI-222 Mouser Part No 755-RPI-222 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTPTR ULTRAMIN HIGH RES 4.9x2.6mm	Datasheet	584In Stock	€0.705 €0.592 €0.565 €0.512 View €0.482 €0.456 €0.445 €0.415	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	2 mm
Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER 2mm Gap 4.2x5.2mm RPI-243 ROHM Semiconductor 1: €0.783 837In Stock End of Life	Mfr. Part No. RPI-243 Mouser Part No 755-RPI-243 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER 2mm Gap 4.2x5.2mm	Datasheet	837In Stock	€0.783 €0.663 €0.634 €0.589 View €0.547 €0.533 €0.507 €0.488 Quote	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	2 mm
Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER 3mm Gap 4.2x5.4mm RPI-352 ROHM Semiconductor 1: €0.705 5,225In Stock End of Life	Mfr. Part No. RPI-352 Mouser Part No 755-RPI-352 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER 3mm Gap 4.2x5.4mm	Datasheet	5,225In Stock	€0.705 €0.597 €0.505 €0.464 View €0.46 €0.439 €0.418 €0.368	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	3 mm
Optical Switches, Transmissive, Phototransistor Output Photointerrupter gap width 4mm RPI-0352E ROHM Semiconductor 1: €0.619 1,387In Stock End of Life	Mfr. Part No. RPI-0352E Mouser Part No 755-RPI-0352E End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output Photointerrupter gap width 4mm	Datasheet	1,387In Stock	Cut Tape €0.619 €0.519 €0.495 €0.448 Reel €0.43 View €0.405 €0.389 €0.382 €0.381 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	3 mm
Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER ULTRA MIN; HIGH RES RPI-125 ROHM Semiconductor 1: €0.748 1,732In Stock End of Life	Mfr. Part No. RPI-125 Mouser Part No 755-RPI-125 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER ULTRA MIN; HIGH RES	Datasheet	1,732In Stock	€0.748 €0.633 €0.605 €0.549 View €0.533 €0.518 €0.468 €0.447	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	1.2 mm
Optical Switches, Transmissive, Phototransistor Output Energysaving Photointerrupter RPI-441C1E ROHM Semiconductor 1: €0.602 3,213In Stock End of Life	Mfr. Part No. RPI-441C1E Mouser Part No 755-RPI-441C1E End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output Energysaving Photointerrupter	Datasheet	3,213In Stock	€0.602 €0.507 €0.484 €0.438 View €0.42 €0.409 €0.38 €0.361 €0.338	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	4 mm
Optical Switches, Transmissive, Phototransistor Output 50mA 5V 80mW Photointerrupter RPI-0226 ROHM Semiconductor 1: €0.679 1,860Expected 09/10/2026 End of Life	Mfr. Part No. RPI-0226 Mouser Part No 755-RPI-0226 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output 50mA 5V 80mW Photointerrupter	Datasheet	1,860Expected 09/10/2026	Cut Tape €0.679 €0.569 €0.544 €0.492 Reel €0.437 View €0.462 €0.427 €0.396 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	2 mm
Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER 4mm Gap 8.0x4.2mm RPI-441C1 ROHM Semiconductor 1: €0.611 1,000Expected 26/10/2026 End of Life	Mfr. Part No. RPI-441C1 Mouser Part No 755-RPI-441C1 End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTERRUPTER 4mm Gap 8.0x4.2mm	Datasheet	1,000Expected 26/10/2026	€0.611 €0.514 €0.49 €0.444 View €0.426 €0.411 €0.383 €0.367 €0.354	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	4 mm
Optical Switches, Reflective, Phototransistor Output PHTOINTRUPTR RFLCTVE PHTOTRNSISTR 4PIN ROHM Semiconductor RPR-359F RPR-359F ROHM Semiconductor 1: €2.98 180Expected 20/10/2026	Mfr. Part No. RPR-359F Mouser Part No 755-RPR-359F	ROHM Semiconductor	Optical Switches, Reflective, Phototransistor Output PHTOINTRUPTR RFLCTVE PHTOTRNSISTR 4PIN Learn More about ROHM Semiconductor rohmopticalsensors	Datasheet	180Expected 20/10/2026	€2.98 €2.18 €1.61 €1.41	Min.: 1 Mult.: 1	Optical Switches, Reflective, Phototransistor Output	Reflective		3.5 mm
Optical Switches, Transmissive, Phototransistor Output Sensor, Photointerrupters, Transmissive, If (Max)=35 mA, Ic (Max)=30 mA, 30 V, Surface Mount RPI-0451E ROHM Semiconductor 1: €1.34 890Expected 19/03/2027 End of Life	Mfr. Part No. RPI-0451E Mouser Part No 755-RPI-0451E End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output Sensor, Photointerrupters, Transmissive, If (Max)=35 mA, Ic (Max)=30 mA, 30 V, Surface Mount	Datasheet	890Expected 19/03/2027	Cut Tape €1.34 €1.15 €0.903 €0.776 Reel €0.734 View €0.698 €0.669 €0.638	Min.: 1 Mult.: 1 : 1,000	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	4.5 mm
Optical Switches, Transmissive, Phototransistor Output PHOTOINTPTR ULTRAMIN Wide Gap 4.9x2.6mm RPI-221A ROHM Semiconductor 1: €1.01 Non-Stocked End of Life	Mfr. Part No. RPI-221A Mouser Part No 755-RPI-221A End of Life	ROHM Semiconductor	Optical Switches, Transmissive, Phototransistor Output PHOTOINTPTR ULTRAMIN Wide Gap 4.9x2.6mm	Datasheet	Non-Stocked	€1.01 €0.707 €0.517 €0.431 View €0.405 €0.378 €0.361 €0.334 €0.312	Min.: 1 Mult.: 1	Optical Switches, Transmissive, Phototransistor Output	Transmissive, Slotted	2 mm

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