OPB960L55 Equivalent & Substitute Parts

Part Overview

The OPB960L55 is a through-beam optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This component is designed for 0.125" (3.18mm) PCB-mounted applications with totem pole buffer output configuration. The OPB960L55 is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Active alternatives within the same product family maintain identical electrical and mechanical specifications, ensuring direct functional compatibility.

Key Parameters

Parameter	Value
Manufacturer	TT Electronics/Optek Technology
Series	Photologic®
Category	Optical Sensors
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Totem Pole, Buffer
Mounting Type	Through Hole
Package / Case	PCB Mount
Voltage - Supply	4.75V ~ 5.25V
Current - Supply	15 mA
Response Time	70ns
Operating Temperature	-40°C ~ 70°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the OPB960L55 is determined by strict equivalence across the following critical parameters:

Sensing Distance: 0.125" (3.18mm)
Sensing Method: Through-Beam
Output Configuration: Totem Pole, Buffer
Mounting Type: Through Hole
Package / Case: PCB Mount
Voltage Supply Range: 4.75V ~ 5.25V
Current Supply: 15 mA
Response Time: 70ns
Operating Temperature Range: -40°C ~ 70°C
RoHS and REACH Compliance Status

All substitute parts listed maintain identical specifications across these parameters. Substitution is valid based on product status transition from obsolete to active alternatives, with no functional or electrical deviations. The OPB930 and OPB960 base product families are interchangeable within this specification set. Packaging variants (Bulk) differ from the original part but do not affect electrical or mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	Voltage Supply	Current Supply	Response Time	Operating Temperature	RoHS Status	Inventory (Pcs)
OPB960L55	TT Electronics/Optek	Obsolete	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	725
OPB930L51	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1285
OPB930L55	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	672
OPB960L51	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1073
OPB960N11	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1052
OPB960N51	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	8810
OPB960N55	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1745
OPB960P51	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1144
OPB960T11	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1065
OPB960T51	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	20199
OPB960T55	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1239

Engineering Selection Recommendations

All listed substitute parts are manufactured by TT Electronics/Optek Technology and maintain ROHS3 compliance and REACH unaffected status, matching the original OPB960L55 specifications. Selection among active alternatives should prioritize parts with highest inventory availability for supply chain continuity. OPB960T51 offers the largest stock position at 20,199 units, followed by OPB960N51 at 8,810 units. Both maintain identical electrical and mechanical parameters to the obsolete OPB960L55.

For new designs or system replacements, any active part from this list provides equivalent functionality. Packaging format (Bulk) is standard for active production variants and does not affect circuit-level performance or PCB mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can OPB960L55 be directly replaced with OPB960T51? A: Yes. Both parts share identical sensing distance (0.125"), sensing method (through-beam), output configuration (totem pole buffer), supply voltage (4.75V–5.25V), current draw (15 mA), response time (70ns), and operating temperature range (-40°C to 70°C). Direct substitution is valid at the circuit level.

Q: What is the difference between OPB930 and OPB960 base families? A: Both families maintain identical electrical and mechanical specifications for the parameters listed. Substitution between OPB930L55 and OPB960L55 is valid based on the provided specification set.

Q: Does packaging format affect compatibility? A: Packaging format (Bulk vs. original) does not affect electrical performance or PCB mounting. The through-hole mounting type and PCB mount case remain consistent across all variants.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original OPB960L55 compliance status.

Q: Which substitute part has the best supply availability? A: OPB960T51 has the highest inventory at 20,199 units, followed by OPB960N51 at 8,810 units. Both are active production parts suitable for immediate procurement.

Q: Can I use OPB930L51 as a substitute for OPB960L55? A: Yes. OPB930L51 meets all electrical and mechanical substitution criteria and is an active production part with 1,285 units in stock.

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