OPB828A Equivalent & Substitute Parts

Part Overview

The OPB828A is an optical sensor manufactured by TT Electronics/Optek Technology, designed as a through-beam phototransistor with PCB mount configuration. This component operates at a sensing distance of 0.125" (3.18mm) and is classified as an unamplified optical sensor. The OPB828A is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Active alternatives with identical electrical and mechanical parameters are available from the same manufacturer series.

Key Parameters

Parameter	Value
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	Through Hole
Package / Case	PCB Mount
Type	Unamplified
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB828A are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following criteria:

Primary Equivalence Parameters:

Sensing distance: 0.125" (3.18mm)
Sensing method: Through-Beam
Output configuration: Phototransistor
Current ratings: If (Max) 50 mA, Ic (Max) 30 mA
Voltage rating: Collector Emitter Breakdown 30 V
Operating temperature range: -40°C ~ 85°C
Mounting type: Through Hole
Package type: PCB Mount
Sensor type: Unamplified

All substitute parts listed maintain identical values across these parameters. Substitutes are categorized as either manufacturer-recommended (active product status) or parametric equivalents (functionally identical specifications). The OPB828C is the manufacturer-recommended direct substitute, while OPB360 and OPB365 series variants provide parametric equivalence with active product status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	If (Max)	Ic (Max)	Vce Breakdown (Max)	Operating Temp	Mounting Type	Package	Type	RoHS Status
OPB828A	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB828C	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB360L11	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB360L51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB360L55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB360T51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB360T55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB365L51	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB365T55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB370L55	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant
OPB370T11	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 85°C	Through Hole	PCB Mount	Unamplified	ROHS3 Compliant

Engineering Selection Recommendations

The OPB828A is obsolete and no longer in active production. For new designs or production continuity, the OPB828C is the manufacturer-recommended substitute, maintaining identical electrical and mechanical specifications while offering active product status and bulk packaging availability.

For applications requiring additional inventory flexibility, the OPB360 series (OPB360L11, OPB360L51, OPB360L55, OPB360T51, OPB360T55) and OPB365 series (OPB365L51, OPB365T55) provide parametric equivalence with active product status. The OPB370 series variants (OPB370L55, OPB370T11) are also parametrically equivalent alternatives.

All substitute parts maintain ROHS3 compliance and identical electrical ratings. Selection among active alternatives should be based on packaging availability and lead time requirements, as all parts are functionally interchangeable within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can OPB360 series parts directly replace the OPB828A? A: Yes. OPB360L11, OPB360L51, OPB360L55, OPB360T51, and OPB360T55 are parametric equivalents with identical sensing distance, output configuration, current ratings, voltage ratings, operating temperature range, and mounting specifications. All are active products with ROHS3 compliance.

Q: What is the difference between OPB828C and OPB360 series substitutes? A: OPB828C is the manufacturer-recommended direct substitute within the OPB828 base product family. OPB360 and OPB365 series parts are parametric equivalents from different base product families but maintain identical electrical and mechanical parameters. Selection depends on packaging availability and supply chain requirements.

Q: Are all substitute parts available in the same packaging? A: OPB828C is available in bulk packaging. OPB360 and OPB365 series variants are also available in bulk packaging. Packaging consistency across substitutes supports standardized procurement processes.

Q: Do substitute parts maintain the same compliance certifications? A: Yes. All substitute parts listed are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications as the OPB828A.

Q: Can I use OPB365T55 or OPB370T11 as alternatives? A: Yes. OPB365T55 and OPB370T11 maintain identical electrical specifications, sensing distance, output configuration, and operating temperature range. These are parametric equivalents suitable for direct substitution in applications requiring the OPB828A specifications.

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