OPB365L51 Equivalent & Substitute Parts

Part Overview

The OPB365L51 is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor with PCB mount configuration. This component operates at a sensing distance of 0.125" (3.18mm) and is designed for applications requiring slot-type optical detection. The part is currently active in production with 1132 units in stock inventory.

Substitute parts are necessary when the OPB365L51 becomes unavailable, when alternative lead times are required, or when design flexibility permits selection from equivalent optical sensor variants within the same product family. All substitute parts listed maintain identical electrical and mechanical specifications, ensuring direct functional compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB365L51
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 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)
REACH Status	REACH Unaffected
Part Status	Active

Substitute Part Grouping Explanation

Substitute parts for the OPB365L51 are qualified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain constant:

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)
REACH Status: REACH Unaffected

All substitute parts listed maintain these parameters identically to the OPB365L51. Variations in part numbering reflect different internal configurations or manufacturing revisions that do not affect functional performance in applications requiring the specified electrical and mechanical characteristics.

Parameter Comparison

Part Number	Manufacturer	Sensing Distance	Sensing Method	Output Configuration	If (Max)	Ic (Max)	Vce Breakdown (Max)	Operating Temperature	Mounting Type	Package	Type	RoHS Status	Inventory (Pcs)
OPB365L51	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	1132
OPB360L11	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	742
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
OPB360T55	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	769
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
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
OPB380L51Z	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	1085
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

Engineering Selection Recommendations

All substitute parts listed are manufactured by TT Electronics/Optek Technology and maintain active production status. Each part is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Selection among equivalent parts should be based on inventory availability and lead time requirements. The OPB365T55 variant offers the highest current inventory level at 4496 units, followed by OPB380T51Z at 2503 units. The OPB360T51 provides 2007 units in stock. All parts are suitable for direct substitution in applications currently specified for the OPB365L51.

Moisture sensitivity level MSL 1 (Unlimited) indicates these components require no special moisture control during storage, handling, or assembly, simplifying logistics and manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can OPB360L11, OPB360T51, and OPB360T55 be used interchangeably with OPB365L51?

A: Yes. These parts share identical electrical specifications (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), identical operating temperature range (-40°C to 85°C), and identical mechanical mounting (through-hole PCB mount). All are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between OPB365L51 and OPB365T55?

A: Both parts share the same base product number (OPB365) and maintain identical electrical and mechanical parameters. The suffix variation (L51 versus T55) reflects internal configuration differences that do not affect functional performance in applications requiring the specified parameters.

Q: Are OPB380 series parts (OPB380L51Z, OPB380T11Z, OPB380T51Z, OPB380T55Z) compatible with OPB365L51?

A: Yes. OPB380 series parts maintain all critical electrical and mechanical specifications identical to OPB365L51, including sensing distance, current ratings, voltage ratings, operating temperature range, mounting type, and package configuration. The base product number variation (OPB380 versus OPB365) reflects design family differences that do not affect substitution compatibility.

Q: What does the "Z" suffix in OPB380 part numbers indicate?

A: The "Z" suffix is a manufacturing or configuration designation provided in the part number. It does not alter the electrical specifications, sensing characteristics, or mechanical compatibility of the component.

Q: Can I substitute OPB370T51 or OPB370T55 for OPB365L51?

A: Yes. OPB370 series 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), identical operating temperature range (-40°C to 85°C), and identical mechanical mounting specifications. All are ROHS3 compliant with MSL 1 rating.

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

A: No. All substitute parts listed are ROHS3 compliant, REACH unaffected, and carry identical environmental and regulatory certifications. All parts are classified as active products in current production.

Q: Which substitute part has the best availability?

A: OPB365T55 has the highest inventory level at 4496 units in stock, followed by OPB380T51Z at 2503 units and OPB360T51 at 2007 units.

Q: Do substitute parts require different PCB layout or footprint modifications?

A: No. All substitute parts use identical through-hole PCB mount configuration and package specifications, requiring no PCB layout modifications or footprint changes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message