OPB461T11 Equivalent & Substitute Parts

Part Overview

The OPB461T11 is an optical through-beam sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This component is designed for PCB-mounted applications requiring 0.125" (3.18mm) sensing distance with NPN open collector output configuration. The part is currently active in production with full inventory availability. Substitute parts are identified when equivalent electrical performance and sensing characteristics are required but alternative packaging or mounting configurations are acceptable for system integration.

Substiute Parts

OPB461T11

TT Electronics/Optek TechnologyIn Stock: 718OPB461T11 Datasheet

Current PartRFQ

OPB471N11

TT Electronics/Optek TechnologyIn Stock: 1270OPB471N11 Datasheet

MFR RecommendedRFQ

OPB481L11Z

TT Electronics/Optek TechnologyIn Stock: 3140OPB481L11Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPB461T11 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Sensing Distance: 0.125" (3.18mm)
• Sensing Method: Through-Beam
• Output Configuration: NPN - Open Collector, Buffer
• Voltage Supply Range: 4.5V ~ 16V
• Current Supply: 7.5 mA
• Response Time: 50ns
• Operating Temperature Range: -40°C ~ 85°C
• Series: Photologic®
• Manufacturer: TT Electronics/Optek Technology

Variable Parameters (Substitution Allowed):

• Mounting Type: Through Hole (OPB461T11) vs. Chassis Mount (OPB481L11Z)
• Package / Case: PCB Mount (OPB461T11) vs. Module, Wire Leads (OPB481L11Z)

The OPB471N11 provides direct electrical and functional equivalence with identical mounting and packaging. The OPB481L11Z maintains full electrical equivalence but differs in physical form factor, suitable for applications where chassis-mounted module configuration with wire leads is preferred over PCB-mounted through-hole installation.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status with ROHS3 compliance and REACH unaffected designation, ensuring regulatory alignment for current applications.

OPB471N11 is the primary substitute when direct form-factor compatibility is required. It provides identical electrical specifications, mounting configuration, and packaging to the OPB461T11, enabling direct replacement in PCB-mounted through-hole applications without circuit board redesign.

OPB481L11Z is the appropriate substitute when system architecture permits chassis-mounted module installation with wire lead connections. This configuration maintains all electrical performance parameters while offering alternative mechanical integration for applications where modular sensor deployment is preferred.

Selection between OPB471N11 and OPB481L11Z depends solely on mechanical integration requirements and available inventory. Both parts deliver equivalent electrical performance and environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can OPB481L11Z replace OPB461T11 directly on the PCB?

A: No. OPB481L11Z uses chassis mount with wire leads, while OPB461T11 requires through-hole PCB mounting. Circuit board redesign is necessary to accommodate the module form factor and wire lead connections.

Q: Is OPB471N11 a complete equivalent to OPB461T11?

A: Yes. OPB471N11 matches all electrical specifications, sensing characteristics, mounting type, and packaging of OPB461T11. No circuit modifications are required for substitution.

Q: What are the key electrical parameters that define substitution eligibility?

A: Sensing distance (0.125"), sensing method (through-beam), output configuration (NPN open collector), supply voltage range (4.5V–16V), current draw (7.5 mA), response time (50ns), and operating temperature range (-40°C to 85°C) must remain constant across all substitute parts.

Q: Are all three parts compliant with current environmental regulations?

A: Yes. OPB461T11, OPB471N11, and OPB481L11Z are all ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the primary difference between OPB471N11 and OPB481L11Z?

A: OPB471N11 is PCB-mounted through-hole; OPB481L11Z is chassis-mounted with wire leads. Electrical performance is identical. Selection depends on mechanical integration approach.