OPB370L11 Equivalent & Substitute Parts

Part Overview

The OPB370L11 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 detection applications. The OPB370L11 is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB370L11
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 OPB370L11 are identified based on strict electrical and mechanical parameter matching. The critical parameters that determine substitutability are:

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

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the OPB370L11. Substitutes are categorized as either manufacturer-recommended alternatives or parametric equivalents, with the distinction based on product status and availability.

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	Type	RoHS Status	Inventory
OPB370L11	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	841 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	909 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	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	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	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	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	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	1132 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	4496 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	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	909 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the OPB370L11. Selection among available alternatives should be based on the following criteria:

Product Status: The OPB370L11 is obsolete. All substitute parts listed are in active production status, ensuring long-term availability and supply chain continuity.

Compliance & Certifications: All substitute parts carry identical RoHS3 compliance and REACH unaffected status, maintaining regulatory alignment with the original component.

Inventory Availability: Substitute parts demonstrate varying inventory levels. OPB360T51 offers the highest inventory position at 2007 units, followed by OPB365T55 at 4496 units, providing flexibility for procurement planning.

Parametric Equivalence: All substitute parts are direct parametric equivalents, sharing identical electrical ratings for forward current, collector current, and breakdown voltage specifications. Operating temperature range remains constant across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can OPB370T11 directly replace OPB370L11 in existing designs?

A: Yes. OPB370T11 is the manufacturer-recommended substitute for OPB370L11. Both parts share identical electrical specifications, sensing distance, output configuration, and mounting type. The primary difference is product status: OPB370L11 is obsolete while OPB370T11 is active production.

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

A: Both series maintain identical electrical and mechanical parameters specified in this reference. The series designation reflects internal manufacturer classification but does not affect functional compatibility or electrical performance in applications requiring the specified parameters.

Q: Are all listed parts suitable for through-hole PCB mounting?

A: Yes. All substitute parts are configured for through-hole mounting with PCB mount package type, maintaining mechanical compatibility with existing board layouts designed for the OPB370L11.

Q: Do substitute parts maintain the same operating temperature range?

A: Yes. All substitute parts operate across the identical temperature range of -40°C to 85°C, ensuring thermal compatibility in applications with the original specification.

Q: What does the suffix designation (L11, T11, L51, T55) indicate?

A: Suffix designations represent internal manufacturer coding for packaging and lead configuration variants. All variants listed maintain identical electrical specifications and functional performance for the parameters specified in this reference.

Q: Are all parts RoHS3 compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, maintaining regulatory alignment with environmental and hazardous substance restrictions.

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