OPB830L55 Equivalent & Substitute Parts

Part Overview

The OPB830L55 is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor with PCB mount configuration. This component is designed for slot-type sensing applications with a 0.125" (3.18mm) sensing distance and operates as an unamplified phototransistor output device. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified based on matching electrical and mechanical parameters that preserve functional compatibility within the through-beam optical sensor category. Substitution is necessary when the primary part experiences supply constraints, inventory limitations, or when design flexibility permits selection from available alternatives meeting identical specifications.

Key Parameters

Parameter	OPB830L55 Specification
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 Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	PCB Mount
Type	Unamplified
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the OPB830L55 are qualified based on strict parameter matching across the following critical criteria:

Electrical Parameters (Must Match):

Current - DC Forward (If) (Max): 50 mA
Current - Collector (Ic) (Max): 30 mA
Voltage - Collector Emitter Breakdown (Max): 30 V

Mechanical & Functional Parameters (Must Match):

Sensing Distance: 0.125" (3.18mm)
Sensing Method: Through-Beam
Output Configuration: Phototransistor
Mounting Type: Through Hole
Package / Case: PCB Mount
Type: Unamplified

Environmental & Compliance Parameters (Must Match):

Operating Temperature Range: -40°C ~ 85°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

All identified substitute parts maintain identical specifications across these parameters, ensuring direct functional and mechanical compatibility with the OPB830L55 in through-beam optical sensing applications.

Parameter Comparison

Part Number	Manufacturer	Sensing Distance	Sensing Method	Output Configuration	If (Max)	Ic (Max)	VCE Breakdown (Max)	Operating Temp	Mounting Type	Package	Type	RoHS	MSL	Inventory
OPB830L55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	1141 Pcs
OPB360T51	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	2007 Pcs
OPB365T55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	4496 Pcs
OPB370L55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	909 Pcs
OPB370T51	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	909 Pcs
OPB370T55	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	1112 Pcs
OPB380T11Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	1111 Pcs
OPB380T51Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	2503 Pcs
OPB380T55Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	1036 Pcs
OPB390L11Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	1137 Pcs
OPB390L51Z	TT Electronics/Optek Technology	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3	1	1025 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and full ROHS3 compliance with REACH Unaffected designation, ensuring regulatory alignment with the OPB830L55. Selection among equivalent parts should be based on inventory availability and lead time requirements, as all candidates satisfy identical electrical, mechanical, and environmental specifications.

The OPB365T55 offers the highest inventory level at 4496 units, followed by OPB380T51Z at 2503 units, providing optimal availability for high-volume applications. The OPB360T51 maintains 2007 units in stock, supporting sustained supply for production requirements.

All parts are manufactured by TT Electronics/Optek Technology and maintain through-hole PCB mount configuration with identical sensing distance, output type, and current/voltage ratings. Direct substitution is supported without circuit redesign or mechanical modification.

Frequently Asked Questions (FAQ)

Q: Can OPB830L55 be directly replaced with any of the listed substitute parts?

A: Yes. All substitute parts match the OPB830L55 across sensing distance (0.125"), sensing method (through-beam), output configuration (phototransistor), electrical ratings (50 mA If max, 30 mA Ic max, 30 V VCE breakdown), operating temperature (-40°C to 85°C), mounting type (through hole), and package configuration (PCB mount). Direct substitution is supported without circuit modification.

Q: Are there differences in part numbering that affect compatibility?

A: Part number variations (such as OPB360, OPB365, OPB370, OPB380, OPB390 base designations and suffixes like T51, T55, L55, L11Z, L51Z) reflect internal manufacturer classifications and packaging variants. All listed parts maintain identical electrical and mechanical specifications required for through-beam optical sensing at 0.125" distance with phototransistor output.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (unlimited moisture sensitivity level). These certifications match the OPB830L55 and support deployment in regulated manufacturing and industrial environments.

Q: How should inventory levels influence part selection?

A: Inventory availability should guide selection when all electrical and mechanical parameters are identical. OPB365T55 (4496 Pcs), OPB380T51Z (2503 Pcs), and OPB360T51 (2007 Pcs) provide the highest stock levels for sustained production requirements.

Q: Are there any restrictions on mixing substitute parts within a single design?

A: No. All substitute parts are electrically and mechanically equivalent. Multiple part numbers may be used interchangeably within the same circuit or assembly without performance degradation, provided the through-hole PCB mount configuration is maintained.

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