OPB980P51 Equivalent & Substitute Parts

Part Overview

The OPB980P51 is an optical sensor from TT Electronics/Optek Technology's Photologic® series, designed as a through-beam sensor with 0.125" (3.18mm) sensing distance and wire lead connections. This part is classified as obsolete, which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct circuit replacement.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB980P51
Manufacturer	TT Electronics/Optek Technology
Category	Optical Sensors
Series	Photologic®
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Totem Pole, Buffer
Mounting Type	Chassis Mount
Current - Supply	15 mA
Voltage - Supply	4.75V ~ 5.25V
Response Time	70ns
Operating Temperature	-40°C ~ 70°C
Package / Case	Module, Wire Leads
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the OPB980P51 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: Chassis Mount
Current - Supply: 15 mA
Voltage - Supply: 4.75V ~ 5.25V
Response Time: 70ns
Operating Temperature: -40°C ~ 70°C
Package / Case: Module, Wire Leads

All substitute parts listed maintain identical specifications across these parameters. The primary distinction between the OPB980P51 and its active equivalents is product status and RoHS compliance level. The OPB980P51 is obsolete and RoHS non-compliant, while all substitute parts are active and ROHS3 compliant.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	Current - Supply	Voltage - Supply	Response Time	Operating Temperature	RoHS Status	Inventory (Pcs)
OPB980P51	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	RoHS non-compliant	1025
OPB980P51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	2412
OPB930W51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	2332
OPB940W51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	2247
OPB940W55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	1300
OPB980L11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	1101
OPB980L51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	1063
OPB980L55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	20399
OPB980P11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	1055
OPB980P55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	995
OPB980T11Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	ROHS3 Compliant	1067

Engineering Selection Recommendations

The OPB980P51 is obsolete and RoHS non-compliant. All listed substitute parts are active and ROHS3 compliant, making them suitable for new designs and applications requiring regulatory compliance.

OPB980P51Z is the direct packaging equivalent with bulk packaging, offering the highest inventory availability (2412 units) and identical electrical and mechanical specifications.

For applications where packaging format differences are acceptable, OPB980L55Z provides the largest available inventory (20399 units) while maintaining all critical electrical and mechanical parameters.

OPB930W51Z, OPB940W51Z, and OPB940W55Z are manufacturer-recommended alternatives from the same Photologic® series with identical functional specifications and active product status.

Frequently Asked Questions (FAQ)

Q: Can OPB980P51Z directly replace OPB980P51 in existing circuits?

A: Yes. OPB980P51Z maintains identical electrical specifications (15 mA supply current, 4.75V–5.25V supply voltage, 70ns response time), mechanical configuration (chassis mount, wire leads), and functional performance (through-beam sensing, 0.125" distance, totem pole buffer output). The primary difference is product status (active vs. obsolete) and RoHS compliance level.

Q: What distinguishes the different substitute part numbers?

A: Substitute parts differ in their internal configuration codes embedded in the part number suffix. All listed parts maintain identical sensing distance, sensing method, output configuration, supply current, supply voltage, response time, operating temperature range, and package type. The differences are internal design variants within the Photologic® series.

Q: Is packaging format a consideration for substitution?

A: The OPB980P51 is supplied in wire lead module packaging. All substitute parts maintain this same package type (Module, Wire Leads). Packaging format differences between OPB980P51 (standard packaging) and OPB980P51Z (bulk packaging) do not affect electrical or mechanical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status. The original OPB980P51 is RoHS non-compliant. For applications requiring RoHS compliance, any of the listed substitutes are suitable.

Q: Which substitute part offers the best availability?

A: OPB980L55Z has the highest inventory level at 20,399 units. OPB980P51Z, the direct equivalent, has 2,412 units available.

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