OPB370P11 Equivalent & Substitute Parts

Part Overview

The OPB370P11 is an optical sensor through-beam phototransistor module manufactured by TT Electronics/Optek Technology. This component features a 0.125" (3.18mm) sensing distance with pre-wired chassis mount packaging and unamplified phototransistor output configuration. The part is currently obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB370P11
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	Chassis Mount
Package / Case	Module, Pre-Wired
Type	Unamplified
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the OPB370P11 is determined by strict alignment of the following critical parameters:

Sensing Distance: 0.125" (3.18mm) — must match exactly
Sensing Method: Through-Beam — optical path configuration must be identical
Output Configuration: Phototransistor — electrical output type must be preserved
Current Ratings: If (Max) 50 mA and Ic (Max) 30 mA — electrical performance envelope
Voltage Rating: Collector Emitter Breakdown (Max) 30 V — must not be exceeded
Operating Temperature: -40°C ~ 85°C — thermal operating range
Mounting Type: Chassis Mount — mechanical interface requirement
Package / Case: Module, Pre-Wired — form factor and connectivity
Type: Unamplified — signal processing characteristic

Substitute parts are grouped into two categories:

MFR Recommended Substitute: OPB370T11 — active product with identical electrical and optical parameters but different mounting configuration (Through Hole PCB Mount instead of Chassis Mount pre-wired).
Parametric Equivalents: OPB360N51, OPB365N11, OPB365N51, OPB365P55, OPB370N51, OPB370N55, OPB375N51, OPB380N11Z, OPB380P51Z — all active products sharing identical electrical specifications, sensing distance, sensing method, output configuration, and operating temperature range. These parts maintain the same chassis mount pre-wired module packaging.

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
OPB370P11	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
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
OPB360N51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB365N11	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB365N51	TT Electronics / Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB365P55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB370N51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB370N55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB375N51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB380N11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant
OPB380P51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Chassis Mount	Module, Pre-Wired	Unamplified	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain full compliance with ROHS3 and REACH requirements, matching the regulatory status of the OPB370P11. The primary distinction between substitute options is product status: OPB370P11 is obsolete, while all listed alternatives are active products with confirmed inventory availability.

For direct form-factor replacement in chassis mount pre-wired module applications, parametric equivalents OPB360N51, OPB365N11, OPB365N51, OPB365P55, OPB370N51, OPB370N55, OPB375N51, OPB380N11Z, and OPB380P51Z provide identical electrical and optical performance with active product status and established supply chains.

For applications permitting PCB mount integration, OPB370T11 offers identical electrical specifications with active product status and higher inventory availability, though this requires mechanical redesign to accommodate through-hole mounting instead of chassis mount pre-wired configuration.

Frequently Asked Questions (FAQ)

Q: Can OPB370T11 be used as a direct replacement for OPB370P11?

A: OPB370T11 shares identical electrical specifications (50 mA If, 30 mA Ic, 30 V Vce breakdown), sensing distance (0.125"), sensing method (through-beam), and output configuration (phototransistor). However, it uses through-hole PCB mount packaging instead of chassis mount pre-wired configuration. Direct substitution requires mechanical redesign of the mounting interface.

Q: What distinguishes the parametric equivalent parts from each other?

A: All paramet

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