OPB890L55Z Equivalent & Substitute Parts

Part Overview

The OPB890L55Z is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor with PCB mount configuration. This component features a 0.125" (3.18mm) sensing distance and is designed for slot-type optical sensing applications. The OPB890L55Z is currently listed as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB890L55Z
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
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OPB890L55Z is 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

All substitute parts listed maintain identical electrical and mechanical specifications across these parameters. Substitutes are grouped by product status, with active parts prioritized over obsolete alternatives.

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
OPB890L55Z	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	858 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
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
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

The OPB890L55Z is obsolete and no longer in active production. All listed substitute parts maintain full electrical and mechanical parameter equivalence while offering active product status from TT Electronics/Optek Technology.

For new designs or ongoing procurement, OPB890L11Z is the manufacturer-recommended direct replacement, offering the highest inventory availability (3656 pcs) and active product status. This part is functionally identical across all critical parameters and maintains ROHS3 compliance.

Alternative active substitutes within the OPB890 and OPB891 series (OPB890T11Z, OPB890T51Z, OPB890T55Z, OPB891T51Z, OPB891T55Z) provide equivalent functionality with varying inventory levels. The OPB892 series variants (OPB892L51Z, OPB892T55Z) are also fully equivalent and available.

All substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of the original OPB890L55Z.

Frequently Asked Questions (FAQ)

Q: Can OPB890L11Z directly replace OPB890L55Z in existing designs?

A: Yes. OPB890L11Z is the manufacturer-recommended replacement and maintains identical electrical specifications (50 mA If max, 30 mA Ic max, 30 V Vce breakdown), sensing distance (0.125"), sensing method (through-beam), output configuration (phototransistor), operating temperature range (-40°C to 85°C), and mounting configuration (PCB mount, chassis mount). The part is currently active with high inventory availability.

Q: What is the difference between OPB890L11Z and OPB890T11Z?

A: Both parts are parametrically equivalent across all electrical and mechanical specifications. The difference lies in packaging designation, with OPB890L11Z specified as bulk packaging and OPB890T11Z also specified as bulk packaging. Both are active products suitable for direct substitution.

Q: Are OPB891 and OPB892 series parts compatible with OPB890L55Z applications?

A: Yes. OPB891T51Z, OPB891T55Z, OPB892L51Z, and OPB892T55Z maintain identical electrical parameters, sensing distance, sensing method, output configuration, operating temperature range, and mounting type. All are active products with ROHS3 compliance.

Q: What inventory considerations should guide part selection?

A: OPB890L11Z offers the highest inventory level at 3656 pcs. OPB890T55Z (1452 pcs), OPB891T51Z (1420 pcs), and OPB891T55Z (1309 pcs) provide substantial availability. OPB892T55Z has the lowest inventory at 741 pcs. Selection should prioritize availability requirements alongside lead time considerations.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited), matching the compliance profile of the obsolete OPB890L55Z.

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