OPB990P11Z Equivalent & Substitute Parts

Part Overview

The OPB990P11Z is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor module features 0.125" (3.18mm) sensing distance with wire leads and totem pole buffer output configuration. The component is Active status and widely used in industrial sensing applications requiring precise through-beam detection. Substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design flexibility allows for alternative configurations within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB990P11Z
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
Voltage - Supply	4.75V ~ 5.25V
Current - Supply	15 mA
Response Time	70ns
Operating Temperature	-40°C ~ 70°C
Package / Case	Module, Wire Leads
Mounting Type	Chassis Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the OPB990P11Z are qualified based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters:

Sensing Distance: 0.125" (3.18mm)
Sensing Method: Through-Beam
Output Configuration: Totem Pole, Buffer
Voltage Supply Range: 4.75V ~ 5.25V
Current Supply: 15 mA
Response Time: 70ns
Operating Temperature Range: -40°C ~ 70°C
Package Type: Module, Wire Leads
Mounting Type: Chassis Mount
Series: Photologic®
Compliance: ROHS3 Compliant, REACH Unaffected

Substitution is determined by base product number variations (OPB930, OPB940, OPB980, OPB990) and suffix designations that indicate internal configuration differences. All listed substitutes share identical external electrical performance and mechanical form factor, enabling direct functional replacement in circuit designs.

Parameter Comparison

Part Number	Base Product	Sensing Distance	Output Config	Supply Voltage	Supply Current	Response Time	Operating Temp	Inventory (Pcs)	Product Status
OPB990P11Z	OPB990	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	670	Active
OPB930W51Z	OPB930	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	2332	Active
OPB940W51Z	OPB940	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	2247	Active
OPB940W55Z	OPB940	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	1300	Active
OPB980L51Z	OPB980	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	1063	Active
OPB980L55Z	OPB980	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	20399	Active
OPB980P51Z	OPB980	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	2412	Active
OPB980T11Z	OPB980	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	1067	Active
OPB980T51Z	OPB980	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	5869	Active
OPB980T55Z	OPB980	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	1523	Active
OPB990L11Z	OPB990	0.125" (3.18mm)	Totem Pole, Buffer	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	2944	Active

Engineering Selection Recommendations

All substitute parts listed maintain Active product status with ROHS3 compliance and REACH unaffected certification, ensuring regulatory alignment with the OPB990P11Z. Selection among substitute parts should be based on inventory availability and internal configuration requirements indicated by suffix designations, as all parts deliver identical electrical performance and mechanical compatibility.

The OPB980L55Z variant offers the highest inventory availability at 20,399 units, providing supply chain stability for high-volume applications. The OPB990L11Z maintains the same base product number as the primary part with 2,944 units in stock, offering direct functional equivalence with improved availability.

Frequently Asked Questions (FAQ)

Q: Can OPB980 series parts directly replace OPB990P11Z in existing designs?

A: Yes. All OPB980 variants listed (OPB980L51Z, OPB980L55Z, OPB980P51Z, OPB980T11Z, OPB980T51Z, OPB980T55Z) maintain identical electrical specifications, sensing distance, output configuration, and mechanical form factor. The base product number difference reflects internal configuration variations that do not affect external circuit performance.

Q: What do the suffix designations (P, L, T, W) and numbers (11, 51, 55) indicate?

A: Suffix designations indicate internal configuration and packaging variations within the Photologic® series. All variants with identical electrical parameters are functionally equivalent for circuit-level substitution purposes.

Q: Are all substitute parts rated for the same operating temperature range?

A: Yes. All substitute parts operate across the -40°C ~ 70°C temperature range, matching the OPB990P11Z specification.

Q: Do substitute parts require different supply voltage or current specifications?

A: No. All substitute parts require 4.75V ~ 5.25V supply voltage and 15 mA supply current, identical to the OPB990P11Z.

Q: Is the response time consistent across all substitute parts?

A: Yes. All substitute parts maintain 70ns response time, ensuring equivalent timing performance in detection applications.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the OPB990P11Z.

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