OPB990P11 Equivalent & Substitute Parts

Part Overview

The OPB990P11 is an optical sensor from TT Electronics/Optek Technology's Photologic® series, designed as a through-beam optical sensor with 0.125" (3.18mm) sensing distance and wire lead module packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The OPB990P11 operates with totem pole buffer output configuration, 15 mA supply current, and 4.75V to 5.25V supply voltage range, suitable for chassis mount applications across -40°C to 70°C operating temperature range.

Key Parameters

Parameter	Value
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
Series	Photologic®

Substitute Part Grouping Explanation

Substitution for the OPB990P11 is determined by strict equivalence across the following parameters: sensing distance (0.125" / 3.18mm), sensing method (through-beam), output configuration (totem pole buffer), mounting type (chassis mount), supply current (15 mA), supply voltage range (4.75V ~ 5.25V), response time (70ns), operating temperature range (-40°C ~ 70°C), and package type (module with wire leads). All substitute parts listed maintain identical electrical and mechanical specifications to the original part.

The primary distinction between the OPB990P11 and its substitutes is product status and compliance certification. The OPB990P11 is obsolete and RoHS non-compliant, while all substitute parts are active products with ROHS3 compliance. Packaging designation (bulk vs. other formats) represents a secondary variation that does not affect functional equivalence.

Parameter Comparison

Part Number	Manufacturer	Product Status	RoHS Status	Sensing Distance	Sensing Method	Output Configuration	Supply Current	Supply Voltage	Response Time	Operating Temperature	Package / Case	Inventory (Pcs)
OPB990P11	TT Electronics/Optek Technology	Obsolete	RoHS non-compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	1011
OPB990P11Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	670
OPB930W51Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	2332
OPB940W51Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	2247
OPB940W55Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	1300
OPB980L11Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	1101
OPB980L51Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	1063
OPB980L55Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	20399
OPB980P11Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	1055
OPB980P51Z	TT Electronics/Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	2412
OPB980P55Z	TT Electronics / Optek Technology	Active	ROHS3 Compliant	0.125" (3.18mm)	Through-Beam	Totem Pole, Buffer	15 mA	4.75V ~ 5.25V	70ns	-40°C ~ 70°C	Module, Wire Leads	995

Engineering Selection Recommendations

For applications currently using OPB990P11, direct substitution with OPB990P11Z is the primary recommendation. This part maintains identical electrical and mechanical specifications while providing active product status and ROHS3 compliance certification.

For new designs or applications where component availability is a consideration, OPB980L55Z offers the highest inventory availability (20,399 units) while maintaining full electrical and mechanical equivalence. OPB930W51Z and OPB940W51Z provide alternative options with substantial inventory levels (2,332 and 2,247 units respectively).

All substitute parts listed carry ROHS3 compliance and active product status, eliminating obsolescence risk associated with the original OPB990P11. Selection among equivalent parts should be based on inventory availability, supply chain lead times, and packaging requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can OPB990P11 be directly replaced with OPB990P11Z?

A: Yes. OPB990P11Z is functionally equivalent to OPB990P11 across all electrical and mechanical parameters. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: Are all listed substitute parts electrically interchangeable?

A: Yes. All substitute parts maintain identical sensing distance (0.125" / 3.18mm), sensing method (through-beam), output configuration (totem pole buffer), supply current (15 mA), supply voltage (4.75V ~ 5.25V), response time (70ns), operating temperature range (-40°C ~ 70°C), and package type (module with wire leads).

Q: What is the difference between OPB980 and OPB990 series parts?

A: The provided data specifies only the parameters listed in the input. Both series maintain identical electrical and mechanical specifications for the parameters provided. Selection between series should be based on availability and supply chain considerations.

Q: Does packaging designation affect functional compatibility?

A: Packaging designation (such as bulk) refers to order quantity and delivery format, not functional specifications. All parts listed use identical module with wire leads package type and are functionally equivalent.

Q: Are these parts suitable for RoHS-compliant applications?

A: All substitute parts listed carry ROHS3 compliance certification. The original OPB990P11 is RoHS non-compliant and should not be used in applications requiring RoHS compliance.

Q: What inventory considerations should guide part selection?

A: OPB980L55Z provides the highest inventory availability at 20,399 units. OPB930W51Z and OPB940W51Z offer substantial inventory (2,332 and 2,247 units respectively). Inventory levels should be evaluated against project timelines and supply chain requirements.

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