OPB983L11 Equivalent & Substitute Parts

Part Overview

The OPB983L11 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 substitution.

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 of the OPB983L11 is determined by strict equivalence across the following parameters: sensing distance (0.125" / 3.18mm), sensing method (through-beam), output configuration (NPN open collector inverted), supply voltage range (4.75V ~ 5.25V), supply current (15 mA), response time (70ns), operating temperature range (-40°C ~ 70°C), mounting type (chassis mount), and package type (module with wire leads).

All identified substitute parts maintain these specifications without deviation. The primary distinction between the OPB983L11 and its substitutes is product status: the original part is obsolete, while all substitute options are active products with current manufacturing and inventory availability.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Output Configuration	Voltage Supply	Current Supply	Response Time	Operating Temperature	RoHS Status	Inventory (Pcs)
OPB983L11	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	687
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
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
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
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
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
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
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
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
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
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

Engineering Selection Recommendations

All substitute parts listed maintain complete electrical and mechanical equivalence to the OPB983L11. The primary selection criterion is regulatory compliance: the original OPB983L11 is RoHS non-compliant, while all active substitutes are ROHS3 compliant. This compliance status is mandatory for new designs and procurement in regulated markets.

OPB983T51Z offers the highest inventory availability (20,199 units), providing supply chain stability for volume applications. OPB983L11Z represents the closest direct replacement, maintaining identical part number structure with the addition of the "Z" suffix indicating RoHS3 compliance and bulk packaging.

All substitute parts are manufactured by TT Electronics / Optek Technology and carry REACH Unaffected status with identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications as the original part.

Frequently Asked Questions (FAQ)

Q: Can OPB983L11 be directly replaced with OPB983L11Z?

A: Yes. OPB983L11Z is the direct equivalent with identical electrical specifications, sensing distance, output configuration, and mounting type. The primary difference is product status (active vs. obsolete) and RoHS3 compliance.

Q: What distinguishes the different substitute part numbers (OPB933, OPB943, OPB983, OPB993 series)?

A: All listed substitutes maintain identical electrical and mechanical parameters specified for the OPB983L11. Differences in base part numbers reflect internal manufacturer designations but do not affect functional equivalence for this application.

Q: Are all substitute parts available in the same packaging as the original OPB983L11?

A: All substitute parts are supplied in bulk packaging with wire leads and chassis mount configuration, maintaining the same physical form factor and connection method as the original part.

Q: Does RoHS3 compliance affect circuit performance?

A: No. RoHS3 compliance reflects manufacturing process changes to eliminate restricted substances. Electrical performance, response time, voltage supply range, and operating temperature specifications remain identical.

Q: Which substitute part should be selected for new designs?

A: OPB983T51Z is recommended for new designs due to highest inventory availability and active product status. OPB983L11Z is recommended for direct replacement applications requiring minimal design modification.

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