OPB360L55 Equivalent & Substitute Parts

Part Overview

The OPB360L55 is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor with PCB mount configuration. This component is designed for slot-type sensing applications with a 0.125" (3.18mm) sensing distance and operates as an unamplified phototransistor output device. The part maintains Active product status and is ROHS3 compliant, making it suitable for current industrial and commercial applications. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical mounting compatibility, and environmental operating specifications to ensure direct functional interchangeability in circuit designs.

Key Parameters

Parameter	Value
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	Through Hole
Package / Case	PCB Mount
Type	Unamplified
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB360L55 are qualified based on strict parametric equivalence across the following critical criteria:

Sensing Distance: 0.125" (3.18mm) — determines slot width compatibility
Sensing Method: Through-Beam — optical detection architecture
Output Configuration: Phototransistor — signal output type
Current Ratings: If (Max) 50 mA and Ic (Max) 30 mA — electrical load capacity
Voltage Rating: Collector Emitter Breakdown 30 V — maximum voltage tolerance
Operating Temperature: -40°C ~ 85°C — thermal operating envelope
Mounting Type: Through Hole — PCB assembly compatibility
Package / Case: PCB Mount — physical form factor
Type: Unamplified — signal processing classification
Compliance: ROHS3 Compliant, MSL 1 (Unlimited) — regulatory and environmental requirements

All substitute parts listed maintain identical values across these parameters, ensuring direct functional replacement without circuit redesign or application modification.

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	RoHS Status	Inventory (Pcs)
OPB360L55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1118
OPB360T51	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	2007
OPB365T55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	4496
OPB370L55	TT Electronics / Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	909
OPB370T51	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	909
OPB370T55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1112
OPB380T11Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1111
OPB380T51Z	TT Electronics / Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	2503
OPB380T55Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1036
OPB390L11Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1137
OPB390L51Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1025

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, qualifying them for direct replacement in applications requiring OPB360L55 functionality. Selection among equivalent parts should be based on inventory availability and lead time requirements, as all parts satisfy identical electrical, mechanical, and environmental specifications. The OPB365T55 variant offers the highest inventory level at 4496 units, while OPB370L55 and OPB370T51 present the lowest availability at 909 units each. For applications requiring immediate component availability, OPB380T51Z (2503 units) and OPB360T51 (2007 units) represent viable alternatives with substantial stock levels. All parts maintain MSL 1 (Unlimited) moisture sensitivity classification, eliminating special handling requirements during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can OPB360T51 replace OPB360L55 in existing circuit designs?

A: Yes. Both parts are parametrically equivalent across all critical specifications: sensing distance, output configuration, current ratings, voltage tolerance, operating temperature range, and mounting type. Direct substitution requires no circuit modification.

Q: What distinguishes the OPB370 series from the OPB360 series?

A: Both series maintain identical electrical and mechanical parameters as specified in this reference. Substitution between series is supported based on parametric equivalence alone.

Q: Are the OPB380 and OPB390 variants with "Z" suffix compatible with non-Z variants?

A: All variants listed—with or without "Z" suffix—maintain identical electrical specifications, sensing distance, output configuration, and mounting type. The "Z" designation does not affect parametric compatibility for substitution purposes.

Q: Does inventory level affect part selection for substitution?

A: Inventory levels are provided for procurement planning only. All listed parts are functionally equivalent and suitable for substitution regardless of stock quantity. Selection should prioritize availability and lead time based on project requirements.

Q: Are there any compliance or certification differences between substitute parts?

A: No. All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) classification. Regulatory and environmental certifications are uniform across all listed equivalents.

Q: Can I mix OPB360L55 and substitute parts in the same assembly?

A: Yes. All parts are parametrically equivalent and can be used interchangeably within the same design without performance degradation or compatibility issues.

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