OPB827C Equivalent & Substitute Parts

Part Overview

The OPB827C 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 optical sensing applications with a 0.125" (3.18mm) sensing distance. The OPB827C is currently listed as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and component procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB827C
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 ~ 85°C
Mounting Type	Through Hole
Package / Case	PCB Mount
Type	Unamplified
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the OPB827C are identified based on strict parameter matching across the following critical electrical and mechanical specifications:

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

All identified substitute parts maintain identical electrical ratings and mechanical compatibility with the OPB827C. The primary distinction between substitute options lies in product status (active vs. obsolete) and packaging configuration (bulk vs. other formats).

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	Inventory
OPB827C	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	1129 Pcs
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	961 Pcs
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	742 Pcs
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	688 Pcs
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	1118 Pcs
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	2007 Pcs
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	769 Pcs
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	1132 Pcs
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	4496 Pcs
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	909 Pcs
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	909 Pcs

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical compatibility with the OPB827C. Selection among available substitutes should be based on the following criteria:

Product Status Priority: OPB828C is the manufacturer-recommended substitute, carrying active product status and ensuring long-term availability and support. All OPB360, OPB365, and OPB370 series variants are also active products.

Compliance Alignment: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original OPB827C.

Inventory Availability: OPB365T55 offers the highest inventory level at 4496 pieces, followed by OPB360T51 at 2007 pieces. These options provide supply chain stability for high-volume applications.

Packaging Consideration: All substitute parts are supplied in bulk packaging, consistent with the original component's distribution format.

Frequently Asked Questions (FAQ)

Q: Can OPB828C directly replace OPB827C in existing designs? A: Yes. OPB828C is the manufacturer-recommended substitute with identical electrical ratings (50 mA If max, 30 mA Ic max, 30 V Vce breakdown), sensing distance (0.125"), sensing method (through-beam), output configuration (phototransistor), operating temperature range (-40°C to 85°C), and mounting type (through hole PCB mount). No circuit modifications are required.

Q: What distinguishes the OPB360, OPB365, and OPB370 series from OPB828C? A: All variants share identical electrical and mechanical specifications. Differences exist only in internal device characteristics not specified in the provided parameters. Selection among these series should be based on availability, inventory levels, and application-specific performance requirements not covered by the listed parameters.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All identified substitute parts carry ROHS3 compliance certification, matching the regulatory requirement of the original OPB827C.

Q: Does the suffix designation (L11, L51, L55, T11, T51, T55) affect electrical compatibility? A: The suffix designations indicate internal device variants within the OPB360, OPB365, and OPB370 base product families. All variants maintain identical electrical ratings and mechanical compatibility as specified in the provided parameters.

Q: What is the recommended substitute for new designs? A: OPB828C is the manufacturer-recommended substitute for the obsolete OPB827C. For applications requiring maximum inventory availability, OPB365T55 provides the highest stock level among all active alternatives.

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