OPB829D Equivalent & Substitute Parts

Part Overview

The OPB829D 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 phototransistor output configuration, designed for chassis mount applications in pre-wired module form. The OPB829D is classified as obsolete product status. Due to its obsolescence, identifying active equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB829D
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 ~ 80°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

Substitution of the OPB829D is determined by strict equivalence 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
Mounting Type: Chassis Mount
Package / Case: Module, Pre-Wired
Type: Unamplified

All identified substitute parts maintain these electrical and mechanical parameters. The substitute parts are grouped into two categories: direct manufacturer equivalents and parametric equivalents. Direct equivalents share the same base product number with packaging variations. Parametric equivalents maintain identical electrical specifications and physical form factor while originating from different product lines within the OPB series.

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
OPB829D	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	Module, Pre-Wired	Unamplified	RoHS non-compliant
OPB829DZ	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	Module, Pre-Wired	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

The OPB829D is obsolete and no longer in active production. All identified substitute parts are active products with ROHS3 compliance, providing improved regulatory alignment compared to the original non-compliant component.

OPB829DZ is the direct successor to OPB829D, sharing identical electrical and mechanical specifications with the addition of RoHS3 compliance. This part is the primary recommendation for direct replacement in new designs and production runs.

OPB360N51, OPB365N11, OPB365N51, OPB365P55, OPB370N51, OPB370N55, OPB375N51, OPB380N11Z, and OPB380P51Z are parametric equivalents that maintain all critical electrical parameters and physical form factor. These parts originate from different product series within the OPB optical sensor line and are suitable for applications where the specific product line designation is not a design constraint. All parametric equivalents support an extended operating temperature range of -40°C to 85°C, compared to the OPB829D range of -40°C to 80°C.

Selection between substitute parts should be based on inventory availability, lead time requirements, and any design-specific preferences regarding product line designation. All substitute parts maintain identical sensing distance, sensing method, output configuration, current ratings, voltage ratings, mounting type, package form, and unamplified type classification.

Frequently Asked Questions (FAQ)

Q: Can OPB829DZ be used as a direct replacement for OPB829D?

A: Yes. OPB829DZ maintains identical electrical specifications (50 mA forward current, 30 mA collector current, 30 V breakdown voltage) and physical form factor (0.125" through-beam phototransistor module, chassis mount, pre-wired). The primary difference is RoHS3 compliance status. OPB829DZ is the active production equivalent.

Q: What is the difference between OPB829DZ and the parametric equivalents like OPB370N55?

A: OPB829DZ shares the same base product number (OPB829) as the original part, differing only in packaging designation. Parametric equivalents such as OPB370N55 originate from different product series (OPB370 base number) but maintain identical electrical and mechanical parameters. All parts are functionally interchangeable based on the specified parameters.

Q: Are there any temperature range differences between OPB829D and its substitutes?

A: OPB829D operates from -40°C to 80°C. OPB829DZ maintains this range. Parametric equivalents (OPB360N51, OPB365 series, OPB370 series, OPB375N51, OPB380 series) support an extended range of -40°C to 85°C, providing additional thermal margin in high-temperature applications.

Q: Do all substitute parts use the same pre-wired module packaging?

A: Yes. All identified substitute parts are supplied as pre-wired modules with chassis mount configuration, maintaining the same physical form factor and installation method as OPB829D.

Q: What is the inventory status of these substitute parts?

A: OPB829DZ has 5,613 units in stock. OPB370N55 has the highest inventory at 90,400 units. Other parametric equivalents range from 648 to 1,916 units in stock. Inventory levels should be confirmed at time of procurement.

Q: Are all substitute parts RoHS compliant?

A: All identified substitute parts are ROHS3 compliant. The original OPB829D is RoHS non-compliant. Substitution provides improved regulatory compliance for new production.

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