OPB890L51Z Equivalent & Substitute Parts

Part Overview

The OPB890L51Z 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 features a 0.125" (3.18mm) sensing distance and is rated for operation across -40°C to 85°C. The part is currently listed as obsolete, making identification of functionally equivalent active alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB890L51Z
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	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the OPB890L51Z 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 Range: -40°C ~ 85°C
Mounting Type: Chassis Mount
Package / Case: PCB Mount
Type: Unamplified
RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

All identified substitute parts maintain identical electrical and mechanical specifications across these parameters. Substitutes are grouped by product status (Active vs. Obsolete) and base product number (OPB890, OPB891, OPB892 series).

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	If (Max)	Ic (Max)	VCE Breakdown (Max)	Operating Temperature	Mounting Type	Package / Case	Type	RoHS Status	Inventory
OPB890L51Z	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	716 Pcs
OPB890T51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	768 Pcs
OPB890L11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	3656 Pcs
OPB890T11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	1277 Pcs
OPB890T55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	1452 Pcs
OPB891T51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	1420 Pcs
OPB891T55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	1309 Pcs
OPB892L51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	1109 Pcs
OPB892T55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	PCB Mount	Unamplified	ROHS3 Compliant	741 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical equivalence to the OPB890L51Z across all specified parameters. Selection among active alternatives should prioritize:

Product Status: All substitute parts carry Active product status, ensuring ongoing manufacturer support and availability, in contrast to the obsolete OPB890L51Z.

Compliance Certifications: All substitutes maintain ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements.

Inventory Availability: OPB890L11Z offers the highest inventory level at 3656 pieces, followed by OPB890T55Z at 1452 pieces and OPB891T51Z at 1420 pieces. Inventory levels support production planning and supply chain continuity.

Base Product Series: Substitutes span three base product families (OPB890, OPB891, OPB892), all manufactured by TT Electronics/Optek Technology with identical electrical performance specifications.

Frequently Asked Questions (FAQ)

Q: Can OPB890L51Z be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts maintain identical electrical ratings (50 mA forward current, 30 mA collector current, 30 V breakdown voltage), identical sensing distance (0.125"), identical sensing method (through-beam), identical output configuration (phototransistor), and identical operating temperature range (-40°C to 85°C). PCB mount compatibility is maintained across all parts.

Q: Why is the OPB890L51Z listed as obsolete?

A: The OPB890L51Z carries obsolete product status. Active alternatives within the OPB890, OPB891, and OPB892 series provide equivalent functionality with ongoing manufacturer support.

Q: What is the difference between OPB890, OPB891, and OPB892 base product numbers?

A: The provided data specifies only the base product numbers without additional differentiation parameters. All three series maintain identical electrical and mechanical specifications for the parts listed.

Q: Are there packaging differences among the substitutes?

A: All substitute parts are specified as PCB Mount with Chassis Mount configuration. Packaging is listed as Bulk for all active alternatives.

Q: Which substitute offers the best availability?

A: OPB890L11Z provides the highest inventory level at 3656 pieces in stock.

Q: Do all substitutes meet current compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant and REACH Unaffected, meeting current regulatory standards.

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