OPB810W55 Equivalent & Substitute Parts

Part Overview

The OPB810W55 is an optical sensor through-beam phototransistor module manufactured by TT Electronics/Optek Technology. This component is classified as an unamplified optical sensor with a 0.375" (9.53mm) sensing distance and phototransistor output configuration. The main part is currently listed as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Sensing Distance	0.375" (9.53mm)
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 ~ 80°C
Mounting Type	Chassis Mount
Package / Case	Module, Pre-Wired
Type	Unamplified
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB810W55 are qualified based on electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters:

Sensing distance: 0.375" (9.53mm)
Sensing method: Through-beam optical detection
Output configuration: Phototransistor
Maximum collector current: 30 mA
Maximum forward current: 50 mA
Collector-emitter breakdown voltage: 30 V
Operating temperature range: -40°C to 80°C
Mounting configuration: Chassis mount
Package type: Module, pre-wired
Sensor type: Unamplified

The substitute parts are differentiated by base product number (OPB800, OPB801, OPB802, OPB810, OPB811, OPB812) and packaging designation (W51 or W55 suffix), which indicate internal optical or spectral characteristics. All listed substitutes are active product status with RoHS3 compliance, providing improved regulatory alignment compared to the obsolete main part.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Output Configuration	Ic (Max)	If (Max)	VCE Breakdown (Max)	Operating Temperature	Mounting Type	RoHS Status	Inventory (Pcs)
OPB810W55	TT Electronics/Optek Technology	Obsolete	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	RoHS non-compliant	1017
OPB810W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1905
OPB810W51Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1570
OPB811W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	7163
OPB812W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1797
OPB800W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1842
OPB801W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	3801
OPB802W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1230
OPB800W51Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	30 mA	50 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	12796

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically equivalent to the OPB810W55 across all specified parameters. The primary distinction between the main part and substitutes is product status and regulatory compliance.

The OPB810W55 is obsolete and RoHS non-compliant. For new designs and production applications, selection should prioritize active status parts with ROHS3 compliance. OPB810W55Z is the direct equivalent with identical base product number and packaging designation, offering the most straightforward replacement path. OPB811W55Z provides the highest inventory availability at 7163 units. OPB800W51Z offers the largest stock position at 12796 units, though it carries the W51 spectral designation variant.

All substitute parts maintain identical electrical performance specifications, operating temperature range, and mounting configuration. Selection among active alternatives should be based on inventory availability, delivery timeline requirements, and internal design documentation references to specific base product numbers.

Frequently Asked Questions (FAQ)

Q: Can OPB810W55Z directly replace OPB810W55?

A: Yes. OPB810W55Z is a direct equivalent with identical electrical specifications, sensing distance, output configuration, and mounting type. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Bulk packaging is standard for the Z-suffix variant.

Q: What is the difference between W51 and W55 suffix designations?

A: The W51 and W55 suffixes indicate internal optical or spectral characteristics of the sensor module. Both variants maintain identical electrical performance parameters, collector current limits, forward current limits, and operating temperature ranges. Selection between W51 and W55 variants should reference the original design documentation for the specific application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status. The original OPB810W55 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, any active substitute part listed is acceptable.

Q: What is the inventory status for each substitute part?

A: OPB800W51Z has the highest inventory at 12796 units. OPB811W55Z has 7163 units. OPB801W55Z has 3801 units. OPB810W55Z has 1905 units. OPB812W55Z has 1797 units. OPB800W55Z has 1842 units. OPB810W51Z has 1570 units. OPB802W55Z has 1230 units.

Q: Are there any electrical performance differences between substitute parts?

A: No. All substitute parts maintain identical maximum collector current (30 mA), maximum forward current (50 mA), collector-emitter breakdown voltage (30 V), and operating temperature range (-40°C to 80°C).

Q: What mounting configuration do all parts use?

A: All parts use chassis mount configuration with module, pre-wired package type. Physical mounting interfaces are identical across all listed parts.

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