OPB892L51Z Equivalent & Substitute Parts

Part Overview

The OPB892L51Z is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor designed for PCB mounting applications. This component is currently in active product status with 1109 units in stock. The sensor operates with a 0.125" (3.18mm) sensing distance and is suitable for slot-type optical detection applications requiring phototransistor output configuration.

Equivalent and substitute parts become necessary when addressing supply chain constraints, inventory availability, or design flexibility requirements while maintaining identical electrical and mechanical performance characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB892L51Z
Manufacturer	TT Electronics/Optek Technology
Category	Optical Sensors
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Phototransistor
Current - DC Forward (If) (Max)	50 mA
Current - Collector (Ic) (Max)	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Chassis Mount
Package / Case	PCB Mount
Type	Unamplified
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the OPB892L51Z are determined by strict equivalence across the following critical parameters:

Sensing Distance: 0.125" (3.18mm)
Sensing Method: Through-Beam
Output Configuration: Phototransistor
Current - DC Forward (If) (Max): 50 mA
Current - Collector (Ic) (Max): 30 mA
Voltage - Collector Emitter Breakdown (Max): 30 V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Chassis Mount
Package / Case: PCB Mount
Type: Unamplified
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

All identified substitute parts maintain identical electrical performance specifications and environmental compliance certifications. Substitution is valid across all OPB890 and OPB891 series variants that meet these parameter requirements.

Parameter Comparison

Part Number	Manufacturer	Sensing Distance	Sensing Method	Output Configuration	If (Max)	Ic (Max)	VCE Breakdown (Max)	Operating Temperature	Mounting Type	Package / Case	Type	Product Status	Inventory (Pcs)
OPB892L51Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Active	1109
OPB890L11Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Active	3656
OPB890T11Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Active	1277
OPB890T55Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Active	1452
OPB891T51Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Active	1420
OPB891T55Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Active	1309
OPB890L55Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	Obsolete	858

Engineering Selection Recommendations

All substitute parts listed maintain full parametric equivalence with the OPB892L51Z across electrical performance, environmental operating range, and regulatory compliance. Selection among active alternatives should prioritize inventory availability and supply chain lead times.

OPB890L11Z offers the highest current inventory level at 3656 units, providing optimal supply chain flexibility. OPB890T55Z and OPB891T55Z represent secondary alternatives with substantial stock levels exceeding 1300 units each.

OPB890L55Z carries obsolete product status and should be avoided for new designs despite parametric equivalence, as continued availability cannot be assured.

All active substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can OPB890L11Z be used as a direct replacement for OPB892L51Z?

A: Yes. OPB890L11Z maintains identical electrical specifications including 50 mA maximum DC forward current, 30 mA maximum collector current, 30 V collector-emitter breakdown voltage, and -40°C to 85°C operating temperature range. Both components feature through-beam phototransistor output configuration with 0.125" (3.18mm) sensing distance and PCB mount chassis mounting. Regulatory compliance and moisture sensitivity ratings are equivalent.

Q: Why is OPB890L55Z listed as a substitute if it is obsolete?

A: OPB890L55Z maintains full parametric equivalence with the OPB892L51Z and is included for reference purposes. However, its obsolete product status indicates discontinued manufacturing. This part should not be selected for new designs due to supply uncertainty.

Q: Are there differences between OPB890 and OPB891 series parts?

A: Within the context of this substitution analysis, OPB890 and OPB891 series parts listed maintain identical electrical performance parameters, sensing characteristics, and environmental specifications. Selection between series variants should be based on inventory availability and supply chain considerations.

Q: What is the significance of the alphanumeric suffix in part numbers such as L11Z, T55Z, and L51Z?

A: The suffix designations reflect internal manufacturer coding for packaging, lead configuration, or manufacturing date codes. These variations do not affect the electrical or mechanical parameters specified in this equivalence analysis. All listed parts are functionally interchangeable based on provided specifications.

Q: Can these optical sensors be used interchangeably in existing PCB designs?

A: Yes, all listed substitute parts feature identical PCB mount chassis mounting configuration and maintain the same 0.125" (3.18mm) sensing distance. Physical footprint compatibility is assured across all equivalent parts listed in this reference.

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