OPB993P11 Equivalent & Substitute Parts

Part Overview

The OPB993P11 is an optical sensor manufactured by TT Electronics / Optek Technology, classified as a through-beam optical sensor module with 0.125" (3.18mm) sensing distance and wire leads. This component is currently obsolete, which necessitates identification of functionally equivalent active alternatives from the Photologic® series. Substitute parts maintain identical electrical and mechanical specifications while offering current product status and improved compliance certifications.

Key Parameters

Parameter	Value
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	NPN - Open Collector, Inverted
Voltage Supply	4.75V ~ 5.25V
Current Supply	15 mA
Response Time	70ns
Operating Temperature	-40°C ~ 70°C
Mounting Type	Chassis Mount
Package / Case	Module, Wire Leads

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across all electrical and mechanical parameters. All substitute parts listed maintain identical specifications for sensing distance, sensing method, output configuration, supply voltage range, supply current, response time, operating temperature range, mounting type, and package configuration. Substitutes are grouped within the Photologic® series and differentiate only by base product number (OPB933, OPB943, OPB983, OPB993) and suffix designations, which do not alter functional performance within the specified parameter set.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Output Configuration	Voltage Supply	Current Supply	Response Time	Operating Temperature	RoHS Status	Inventory
OPB993P11	TT Electronics / Optek Technology	Obsolete	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	RoHS non-compliant	1135 Pcs
OPB933W51Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	3489 Pcs
OPB933W55Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1243 Pcs
OPB943W51Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1180 Pcs
OPB983L11Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	896 Pcs
OPB983L51Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1900 Pcs
OPB983P11Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	998 Pcs
OPB983P51Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	2108 Pcs
OPB983T51Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	20199 Pcs
OPB983T55Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1009 Pcs
OPB993L11Z	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	NPN - Open Collector, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1716 Pcs

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to OPB993P11 across all specified electrical and mechanical parameters. Primary selection criteria are product status and regulatory compliance. The OPB993P11 is obsolete and RoHS non-compliant. All substitute parts maintain active product status and ROHS3 compliance, making them suitable for new designs and applications requiring current regulatory adherence. OPB983T51Z offers the highest inventory availability at 20,199 units. OPB933W51Z and OPB983P51Z provide substantial inventory levels at 3,489 and 2,108 units respectively. Selection among active substitutes should prioritize supply chain availability and internal procurement requirements, as all alternatives deliver identical functional performance.

Frequently Asked Questions (FAQ)

Q: Can OPB993P11 be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts maintain identical electrical specifications (4.75V ~ 5.25V supply, 15 mA current, 70ns response time), identical sensing characteristics (0.125" through-beam distance, NPN open collector inverted output), identical operating temperature range (-40°C ~ 70°C), and identical mechanical configuration (chassis mount, module with wire leads). Direct substitution is electrically and mechanically valid.

Q: What is the difference between OPB933, OPB943, OPB983, and OPB993 base product numbers?

A: The provided data specifies only the parameters listed in the Key Parameters table. Differences between base product numbers are not defined within the supplied technical specifications. All variants maintain identical functional parameters for sensing distance, output configuration, supply voltage, current, response time, operating temperature, and package type.

Q: Why is OPB993P11 listed as obsolete?

A: OPB993P11 carries obsolete product status and RoHS non-compliant certification. Active alternatives within the Photologic® series provide equivalent functionality with current product support and ROHS3 compliance.

Q: Are there inventory considerations for substitute selection?

A: Inventory levels vary across substitute parts. OPB983T51Z maintains the highest stock at 20,199 units. OPB933W51Z provides 3,489 units, and OPB983P51Z provides 2,108 units. Remaining substitutes range from 896 to 1,900 units. Procurement decisions should account for supply chain requirements and lead time considerations.

Q: Do all substitutes share identical packaging?

A: Yes. All substitute parts use Module, Wire Leads packaging configuration, matching the OPB993P11 package type. No mechanical redesign or board layout modification is required for substitution.

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