OPB365L55 Equivalent & Substitute Parts

Part Overview

The OPB365L55 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 unamplified output. The OPB365L55 is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Active alternatives with identical or compatible electrical and mechanical parameters are available from the same manufacturer series.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB365L55
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	Through Hole
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 OPB365L55 are identified based on strict parameter equivalence across the following critical specifications:

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

All substitute parts listed maintain identical electrical performance characteristics and environmental compliance certifications. The primary distinction among substitutes is product status (active vs. obsolete) and packaging configuration (bulk vs. other formats).

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	MSL	Inventory
OPB365L55	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	884 Pcs
OPB365T55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	4496 Pcs
OPB360L11	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	742 Pcs
OPB360L51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	688 Pcs
OPB360L55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	1118 Pcs
OPB360T51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	2007 Pcs
OPB360T55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	769 Pcs
OPB365L51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	1132 Pcs
OPB370L55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	909 Pcs
OPB370T11	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	909 Pcs
OPB370T51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant	1 (Unlimited)	909 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the OPB365L55. The primary selection criterion is product status: all substitute parts listed are in active production status, whereas the OPB365L55 is obsolete.

OPB365T55 is the manufacturer-recommended direct substitute, offering identical electrical specifications with active product status and significantly higher inventory availability (4496 units). This part is suitable for direct replacement in new designs and production continuity applications.

OPB360 series parts (OPB360L11, OPB360L51, OPB360L55, OPB360T51, OPB360T55) and OPB370 series parts (OPB370L55, OPB370T11, OPB370T51) are parametric equivalents meeting all electrical and environmental requirements. These alternatives provide additional sourcing flexibility and inventory options.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can OPB365T55 be used as a direct replacement for OPB365L55?

A: Yes. OPB365T55 is the manufacturer-recommended substitute with identical electrical parameters, sensing distance, output configuration, operating temperature range, and compliance certifications. The primary difference is product status (active vs. obsolete) and packaging format (bulk).

Q: What is the difference between OPB360 and OPB370 series substitutes?

A: Both OPB360 and OPB370 series parts are parametric equivalents to OPB365L55, maintaining identical electrical specifications including sensing distance, current ratings, voltage breakdown, and operating temperature. Selection between series is based on inventory availability and packaging requirements, as all electrical and mechanical parameters are equivalent.

Q: Are all substitute parts through-hole mounted?

A: Yes. All substitute parts listed maintain through-hole mounting type and PCB mount package configuration, ensuring mechanical compatibility with existing PCB layouts designed for OPB365L55.

Q: Do substitute parts meet the same environmental and compliance standards?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating, matching the original OPB365L55 specifications.

Q: What is the maximum collector current for all substitute parts?

A: All substitute parts maintain a maximum collector current (Ic) of 30 mA and maximum DC forward current (If) of 50 mA, identical to the OPB365L55.

Q: Can I use OPB360 or OPB370 series parts interchangeably with OPB365 series parts?

A: Yes. All parts listed are parametric equivalents with identical electrical performance across all critical specifications. Selection is based on availability, packaging preference, and product status requirements.

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