OPB890P51 Equivalent & Substitute Parts

Part Overview

The OPB890P51 is an optical sensor through-beam phototransistor module manufactured by TT Electronics / Optek Technology. This component is classified as obsolete, with 954 units available in new original stock. The sensor operates as an unamplified through-beam optical detector with a 0.125" (3.18mm) sensing distance and phototransistor output configuration. Due to its obsolete product status, equivalent and substitute parts from the active product line are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB890P51
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	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB890P51 are qualified based on strict electrical and mechanical parameter matching. The critical parameters that determine substitution eligibility 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: Chassis Mount
Package / Case: Module, Pre-Wired
Type: Unamplified

All substitute parts listed below match these parameters exactly. The primary distinction between the obsolete OPB890P51 and its substitutes is product status and RoHS compliance. Direct substitute OPB890P51Z is the same base design with active product status and RoHS3 compliance. Parametric equivalents (OPB360N51, OPB365N11, OPB365N51, OPB365P55, OPB370N51, OPB370N55, OPB375N51, OPB380N11Z, OPB380P51Z) represent alternative sensor models from the OPB series that maintain identical electrical and mechanical specifications.

Parameter Comparison

Parameter	OPB890P51	OPB890P51Z	OPB360N51	OPB365N11	OPB365N51	OPB365P55	OPB370N51	OPB370N55	OPB375N51	OPB380N11Z	OPB380P51Z
Sensing Distance	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Sensing Method	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam
Output Configuration	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor	Phototransistor
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA
Current - Collector (Ic) (Max)	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V	30 V	30 V	30 V	30 V	30 V	30 V	30 V	30 V	30 V	30 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Package / Case	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired	Module, Pre-Wired
Type	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified	Unamplified
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	954 Pcs New Original	6226 Pcs New Original	1394 Pcs New Original	658 Pcs New Original	1916 Pcs New Original	1052 Pcs New Original	1250 Pcs New Original	90400 Pcs New Original	648 Pcs New Original	1100 Pcs New Original	651 Pcs New Original

Engineering Selection Recommendations

For new designs and production applications, OPB890P51Z is the primary recommended substitute. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance, eliminating regulatory and supply chain risks associated with the obsolete OPB890P51.

For applications where extended inventory or alternative sourcing is required, the parametric equivalent parts (OPB360N51, OPB365N11, OPB365N51, OPB365P55, OPB370N51, OPB370N55, OPB375N51, OPB380N11Z, OPB380P51Z) provide functionally identical performance. All substitute parts maintain the same sensing distance, through-beam detection method, phototransistor output, current ratings, voltage ratings, operating temperature range, and mechanical mounting configuration.

OPB370N55 offers the highest inventory availability at 90,400 units, providing supply security for high-volume production. All substitute parts are ROHS3 compliant and carry REACH unaffected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can OPB890P51Z directly replace OPB890P51 in existing designs?

A: Yes. OPB890P51Z is the direct substitute with identical electrical and mechanical parameters. The only differences are active product status and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between the direct substitute and parametric equivalents?

A: OPB890P51Z is the same base design with updated compliance status. Parametric equivalents (OPB360, OPB365, OPB370, OPB375, OPB380 series) are alternative sensor models that match all critical electrical and mechanical specifications but may have different internal optical designs or packaging variants.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, unlike the obsolete OPB890P51 which is RoHS non-compliant.

Q: Do substitute parts have the same mounting configuration?

A: Yes. All substitute parts are chassis mount with module pre-wired package configuration, identical to the OPB890P51.

Q: Which substitute part has the best inventory availability?

A: OPB370N55 has the highest inventory at 90,400 units in new original stock.

Q: Are there any electrical parameter differences between substitutes?

A: No. All substitute parts maintain identical maximum DC forward current (50 mA), collector current (30 mA), collector-emitter breakdown voltage (30 V), and operating temperature range (-40°C ~ 85°C).

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