Optical Switches, Transmissive, Phototransistor Output

.hide-partial { max-height: none; } .show-more { display: none; }

OPB88/89-Z Photointerrupters

Optek / TT Electronics OPB88/89-Z Series Photointerrupters consist of transmissive (slotted) photointerrupters that integrate an infrared LED emitter and an NPN silicon phototransistor in a single through-beam package. These slotted optical switches are designed for non-contact detection of motion or object interruption using a mechanical flag, encoder wheel, or similar interrupter element. The OPB88 and OPB89 families share a common optical platform, with variations in lead configuration, mechanical form factor, and aperture options, depending on the specific variant. Both series provide an open-collector phototransistor output requiring an external pull-up resistor for digital interface operation.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 27

Applied Filters:

Aperture Width

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	Sensing Distance	Sensing Method	Slot Width	Aperture Width	Collector- Emitter Voltage VCEO Max	If - Forward Current	Mounting Style	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890L11Z Optek / TT Electronics 1: HK$43.98 316In Stock	Mfr. Part No. OPB890L11Z Mouser Part No 828-OPB890L11Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	316In Stock	HK$43.98 HK$43.89 HK$42.58 HK$41.68 View Quote	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	0.25 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB881L55Z Optek / TT Electronics 1: HK$40.03 50In Stock	Mfr. Part No. OPB881L55Z Mouser Part No 828-OPB881L55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	50In Stock	HK$40.03	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890T55Z Optek / TT Electronics 1: HK$37.40 179In Stock	Mfr. Part No. OPB890T55Z Mouser Part No 828-OPB890T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	179In Stock	HK$37.40 HK$36.00 HK$35.92 HK$35.67 Quote Quote	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB892T55Z Optek / TT Electronics 1: HK$37.73 183In Stock	Mfr. Part No. OPB892T55Z Mouser Part No 828-OPB892T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	183In Stock	HK$37.73 HK$35.92 HK$35.02 Quote Quote	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB880N11Z Optek / TT Electronics 1: HK$45.29 141In Stock	Mfr. Part No. OPB880N11Z Mouser Part No 828-OPB880N11Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	141In Stock	HK$45.29 HK$40.94 HK$40.85 HK$39.29 HK$39.21	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	0.25 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB880L51Z Optek / TT Electronics 1: HK$41.35 416In Stock	Mfr. Part No. OPB880L51Z Mouser Part No 828-OPB880L51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	416In Stock	HK$41.35 HK$38.22	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB880T55Z Optek / TT Electronics 1: HK$40.28 423In Stock 1,200Expected 31/12/2026	Mfr. Part No. OPB880T55Z Mouser Part No 828-OPB880T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	423In Stock 1,200Expected 31/12/2026	HK$40.28 HK$37.98	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890P51Z Optek / TT Electronics 1: HK$38.88 666In Stock	Mfr. Part No. OPB890P51Z Mouser Part No 828-OPB890P51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	666In Stock	HK$38.88 HK$34.94 HK$33.46	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890T51Z Optek / TT Electronics 1: HK$38.31 1,277In Stock	Mfr. Part No. OPB890T51Z Mouser Part No 828-OPB890T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	1,277In Stock	HK$38.31 HK$36.91	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Output Phototranstr Slotted OPB891T51Z Optek / TT Electronics 1: HK$38.88 502In Stock	Mfr. Part No. OPB891T51Z Mouser Part No 828-OPB891T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Output Phototranstr Slotted Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	502In Stock	HK$38.88 HK$36.91	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output SLTTD OPTICAL SWITCH OPB880T11Z Optek / TT Electronics 1: HK$45.62 42In Stock 200Expected 29/12/2026	Mfr. Part No. OPB880T11Z Mouser Part No 828-OPB880T11Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output SLTTD OPTICAL SWITCH Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	42In Stock 200Expected 29/12/2026	HK$45.62 HK$43.32	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	0.25 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN OPB880T51Z Optek / TT Electronics 1: HK$41.35 329In Stock 1,600On Order	Mfr. Part No. OPB880T51Z Mouser Part No 828-OPB880T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	329In Stock 1,600On Order	HK$41.35 HK$41.26 HK$40.69 HK$39.70 HK$38.72	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB881T55Z Optek / TT Electronics 1: HK$40.36 253In Stock	Mfr. Part No. OPB881T55Z Mouser Part No 828-OPB881T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	253In Stock	HK$40.36 HK$37.40 HK$36.17 HK$36.00	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB882T55Z Optek / TT Electronics 1: HK$39.54 190In Stock	Mfr. Part No. OPB882T55Z Mouser Part No 828-OPB882T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	190In Stock	HK$39.54 HK$37.48	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890P55Z Optek / TT Electronics 1: HK$38.55 63In Stock	Mfr. Part No. OPB890P55Z Mouser Part No 828-OPB890P55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	63In Stock	HK$38.55	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890T11Z Optek / TT Electronics 1: HK$46.61 153In Stock	Mfr. Part No. OPB890T11Z Mouser Part No 828-OPB890T11Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	153In Stock	HK$46.61 HK$45.29 HK$44.88 HK$44.06 View HK$43.81 HK$43.65 Quote	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	0.25 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN OPB880P51Z Optek / TT Electronics 1: HK$40.44 1,995Expected 23/12/2026	Mfr. Part No. OPB880P51Z Mouser Part No 828-OPB880P51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	1,995Expected 23/12/2026	HK$40.44 HK$38.80	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output .125in SLOT OPAQUE OPB891T55Z Optek / TT Electronics 1: HK$39.62 300Expected 29/12/2026	Mfr. Part No. OPB891T55Z Mouser Part No 828-OPB891T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .125in SLOT OPAQUE Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	300Expected 29/12/2026	HK$39.62	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output 0.125" SLOT WIDTH OPB885Z Optek / TT Electronics 1: HK$70.12 108Expected 5/1/2027	Mfr. Part No. OPB885Z Mouser Part No 828-OPB885Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output 0.125" SLOT WIDTH Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	108Expected 5/1/2027	HK$70.12 HK$63.54 HK$61.32 HK$61.07	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB890P11Z Optek / TT Electronics 1: HK$43.81 200Expected 23/12/2026	Mfr. Part No. OPB890P11Z Mouser Part No 828-OPB890P11Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	200Expected 23/12/2026	HK$43.81 HK$42.66	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	0.25 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB880N55Z Optek / TT Electronics 1: HK$53.10 Non-Stocked	Mfr. Part No. OPB880N55Z Mouser Part No 828-OPB880N55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	Non-Stocked	HK$53.10 HK$37.89	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB880P55Z Optek / TT Electronics 200: HK$37.89 Non-Stocked	Mfr. Part No. OPB880P55Z Mouser Part No 828-OPB880P55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	Non-Stocked	HK$37.89	Min.: 200 Mult.: 200	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB881L51Z Optek / TT Electronics 200: HK$39.70 Non-Stocked	Mfr. Part No. OPB881L51Z Mouser Part No 828-OPB881L51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	Non-Stocked	HK$39.70	Min.: 200 Mult.: 200	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB881T51Z Optek / TT Electronics 1: HK$42.17 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. OPB881T51Z Mouser Part No 828-OPB881T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	Non-Stocked Lead-Time 16 Weeks	HK$42.17 HK$40.52	Min.: 1 Mult.: 1	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB882T51Z Optek / TT Electronics 200: HK$39.78 Non-Stocked	Mfr. Part No. OPB882T51Z Mouser Part No 828-OPB882T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	Non-Stocked	HK$39.78	Min.: 200 Mult.: 200	3.18 mm	Transmissive, Slotted	3.18 mm	1.27 mm	30 V	20 mA	Wire Leads	- 40 C	+ 85 C	OPB88/89-Z	Bulk

OPB88/89-Z Photointerrupters

Applied Filters:

Customer Service Office

Company

Resources

Support