OPB390L11 Equivalent & Substitute Parts

Part Overview

The OPB390L11 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 designated as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement.

The OPB390L11 operates as an unamplified optical sensor with a 0.125" (3.18mm) sensing distance, utilizing phototransistor output configuration. The obsolete status of this part requires engineers to select from active alternatives that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	OPB390L11 Specification
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB390L11 are classified based on strict electrical and mechanical parameter matching. All substitute candidates maintain identical specifications 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 Range: -40°C ~ 85°C
Mounting Type: Through Hole
Package / Case: PCB Mount
Type: Unamplified
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are organized into two categories: direct manufacturer equivalents and parametric equivalents. Direct equivalents share the same base design with packaging variations. Parametric equivalents maintain all electrical and mechanical specifications while differing in internal design characteristics or packaging options.

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 (Pcs)
OPB390L11	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	RoHS non-compliant	965
OPB390L11Z	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	1137
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
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
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
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
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
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
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
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
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

Engineering Selection Recommendations

The OPB390L11 is obsolete and requires substitution. The primary recommendation is OPB390L11Z, which is the direct active equivalent with identical electrical and mechanical specifications. OPB390L11Z carries ROHS3 compliance, addressing regulatory requirements that the original part does not meet.

For applications where OPB390L11Z is unavailable, parametric equivalents from the OPB360, OPB365, and OPB370 series provide full electrical and mechanical compatibility. All active substitute parts listed maintain the complete specification set of the original component and carry ROHS3 compliance status.

Inventory availability varies across substitute options. OPB365T55 offers the highest inventory level at 4496 units, followed by OPB360T51 at 2007 units. Selection should prioritize active parts with ROHS3 compliance for new designs and procurement activities.

Frequently Asked Questions (FAQ)

Q: Can OPB390L11Z be used as a direct replacement for OPB390L11?

A: Yes. OPB390L11Z is the active equivalent of OPB390L11, maintaining identical electrical and mechanical specifications. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What distinguishes parametric equivalents from direct equivalents?

A: Direct equivalents share the same base product design with packaging variations. Parametric equivalents maintain all electrical and mechanical specifications while differing in internal design characteristics. All listed substitutes meet the electrical requirements of the OPB390L11.

Q: Are all substitute parts suitable for PCB mount applications?

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

Q: What is the significance of ROHS3 compliance for substitute selection?

A: ROHS3 compliance indicates adherence to current regulatory standards for restricted hazardous substances. All active substitute parts carry ROHS3 compliance, whereas the original OPB390L11 is non-compliant. New designs should utilize ROHS3 compliant alternatives.

Q: Do all substitute parts operate within the same temperature range?

A: Yes. All substitute parts operate across the -40°C to 85°C temperature range, matching the original OPB390L11 specification.

Q: Are there electrical performance differences between substitute options?

A: No. All substitute parts maintain identical maximum current ratings (If: 50 mA, Ic: 30 mA) and voltage specifications (VCE Breakdown: 30 V), ensuring electrical interchangeability.

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