OPB992P51 Equivalent & Substitute Parts

Part Overview

The OPB992P51 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 module packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The sensor operates with totem pole inverted output configuration, suitable for chassis mount applications requiring 4.75V to 5.25V supply voltage and 15mA current draw.

Key Parameters

Parameter	Value
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Totem Pole, Inverted
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 OPB992P51 is determined by strict equivalence across the following parameters: sensing distance (0.125"), sensing method (through-beam), output configuration (totem pole inverted), mounting type (chassis mount), supply voltage range (4.75V ~ 5.25V), current draw (15mA), 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. Substitutes differ only in base product designation (OPB932, OPB942, OPB982, OPB992 series variants) and packaging configuration (bulk vs. original), with active product status and RoHS3 compliance providing improved availability and regulatory alignment compared to the obsolete original.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	Supply Voltage	Current	Response Time	Operating Temp	RoHS Status	Inventory (Pcs)
OPB992P51	TT Electronics/Optek	Obsolete	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	RoHS non-compliant	69900
OPB932W51Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1139
OPB932W55Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	866
OPB942W55Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1455
OPB982P11Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	837
OPB982P51Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1937
OPB982T51Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1842
OPB982T55Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	830
OPB992L51Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1224
OPB992N55Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	20299
OPB992P51Z	TT Electronics/Optek	Active	0.125" (3.18mm)	Through-Beam	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	69800

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with OPB992P51 across all specified parameters. Selection should prioritize active product status parts with ROHS3 compliance over the obsolete, non-compliant original. OPB992P51Z offers the closest form factor match as an active variant of the OPB992 base series with equivalent inventory depth (69800 pcs). OPB992N55Z provides the highest current inventory availability (20299 pcs) for high-volume applications. OPB982P51Z and OPB982T51Z offer strong inventory positions (1937 and 1842 pcs respectively) within the OPB982 series. All substitutes carry identical REACH unaffected and EAR99 ECCN classifications, maintaining regulatory equivalence for export and supply chain purposes.

Frequently Asked Questions (FAQ)

Q: Can OPB992P51Z directly replace OPB992P51 in existing designs? A: Yes. OPB992P51Z is the active production equivalent of the obsolete OPB992P51, maintaining identical electrical specifications (4.75V ~ 5.25V supply, 15mA current, 70ns response time), sensing characteristics (0.125" through-beam), and output configuration (totem pole inverted). The primary difference is product status (active vs. obsolete) and RoHS3 compliance.

Q: What distinguishes OPB932, OPB942, OPB982, and OPB992 series variants? A: All variants listed maintain identical electrical and mechanical parameters specified for OPB992P51. Substitution is valid across series designations when all core parameters match: sensing distance, sensing method, output configuration, supply voltage, current draw, response time, operating temperature range, and package type.

Q: Are there packaging differences between substitute parts? A: All substitute parts are supplied in bulk packaging. The original OPB992P51 packaging specification is not detailed in the provided data. Confirm packaging requirements with your procurement process before final selection.

Q: Does RoHS3 compliance affect circuit-level compatibility? A: No. RoHS3 compliance reflects material composition and manufacturing process standards, not functional or electrical performance. All substitute parts are electrically and mechanically equivalent to OPB992P51 regardless of RoHS status.

Q: Which substitute offers the best inventory availability? A: OPB992N55Z provides the highest inventory level at 20299 pcs. OPB992P51Z offers comparable depth at 69800 pcs and represents the closest series match to the original part.

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