OPB829B Equivalent & Substitute Parts

Part Overview

The OPB829B 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 and pre-wired chassis mount packaging. The OPB829B is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives with identical electrical and mechanical parameters are available from the same manufacturer series.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB829B
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

Substitute parts for the OPB829B are 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
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed maintain identical electrical specifications and mechanical form factors. The primary distinction between the OPB829B and its substitutes is product status and regulatory compliance. All substitute parts are active products with ROHS3 compliance, whereas the OPB829B is obsolete and RoHS non-compliant.

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	Type	RoHS Status	Inventory
OPB829B	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	770 Pcs
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	1394 Pcs
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	658 Pcs
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	1916 Pcs
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	1052 Pcs
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	1250 Pcs
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	90400 Pcs
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	648 Pcs
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	1100 Pcs
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	651 Pcs
OPB380P55Z	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	3121 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical equivalence to the OPB829B. Selection between substitute options should be based on the following factors:

Product Status: All substitute parts are active products with ongoing manufacturer support, whereas the OPB829B is obsolete. Active parts ensure long-term availability and supply chain continuity.

Regulatory Compliance: All substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements. The OPB829B is RoHS non-compliant and does not meet modern procurement standards for many applications.

Operating Temperature Range: Substitute parts support -40°C to 85°C, providing a 5°C extended upper temperature limit compared to the OPB829B (-40°C to 80°C). This extended range offers improved thermal margin for applications operating near temperature limits.

Inventory Availability: Substitute parts demonstrate significantly higher inventory levels. OPB370N55 offers the highest availability at 90,400 units, providing supply security for volume production.

Packaging Variants: Substitute parts are available in multiple packaging configurations (bulk). Selection should align with procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can OPB360N51, OPB365N11, OPB365N51, OPB365P55, OPB370N51, OPB370N55, OPB375N51, OPB380N11Z, OPB380P51Z, and OPB380P55Z be used as direct replacements for OPB829B?

A: Yes. All substitute parts maintain identical electrical specifications (50 mA forward current, 30 mA collector current, 30 V breakdown voltage) and mechanical form factors (0.125" sensing distance, through-beam configuration, phototransistor output, chassis mount pre-wired module). Electrical and mechanical compatibility is confirmed.

Q: What is the primary difference between OPB829B and its substitutes?

A: The OPB829B is an obsolete product with RoHS non-compliant status. All substitute parts are active products with ROHS3 compliance. Substitute parts also provide a 5°C extended upper operating temperature limit (85°C vs. 80°C).

Q: Are there packaging differences between substitute options?

A: All substitute parts are supplied in bulk packaging as pre-wired modules. Packaging configuration is consistent across all options. Selection between part numbers should be based on availability, lead time, and internal part numbering systems.

Q: Which substitute part offers the best availability?

A: OPB370N55 provides the highest inventory level at 90,400 units, making it the optimal choice for volume production and supply chain security.

Q: Do all substitute parts meet current regulatory requirements?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The OPB829B does not meet these requirements.

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