OPB611 Equivalent & Substitute Parts

Part Overview

The OPB611 is an optical sensor module designed for through-beam sensing applications with a 0.15" (3.8mm) sensing distance. It features a transistor output configuration with base-emitter resistor module integration and is packaged as a slot-type module with PC pins for through-hole mounting. The OPB611 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

OPB611

TT Electronics/Optek TechnologyIn Stock: 1007OPB611 Datasheet

Current PartRFQ

OPB621

TT Electronics/Optek TechnologyIn Stock: 1093OPB621 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB611 is based on the following critical parameters that must align across parts:

• Sensing Method: Through-Beam optical sensing capability
• Package Type: Module with PC pins in slot-type configuration
• Mounting Interface: Through-hole mounting compatibility
• Operating Temperature Range: -40°C ~ 100°C
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected status
• Output Type: Transistor-based output configuration

The OPB621 qualifies as a substitute based on matching sensing method (through-beam), identical package configuration (module, PC pins, slot type), compatible mounting type (through hole), matching operating temperature range, and equivalent regulatory compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The OPB621 is the manufacturer-recommended substitute for the obsolete OPB611. Both parts maintain identical through-beam sensing methodology, package configuration, and mounting interface. The OPB621 carries active product status, ensuring continued availability and manufacturing support. Both parts satisfy ROHS3 compliance and REACH unaffected requirements, supporting equivalent regulatory deployment across industrial and commercial applications. The transition from OPB611 to OPB621 preserves mechanical and electrical interface compatibility while providing access to current-generation component supply chains.

Frequently Asked Questions (FAQ)

Q: Can the OPB621 directly replace the OPB611 in existing designs?

A: The OPB621 maintains identical package configuration (module, PC pins, slot type), mounting type (through hole), and operating temperature range (-40°C ~ 100°C). Both parts employ through-beam sensing methodology. Output configuration differs between transistor with base-emitter resistor (OPB611) and NPN open collector (OPB621), requiring circuit-level verification of output stage compatibility.

Q: What is the primary reason for substitution?

A: The OPB611 is classified as obsolete. The OPB621 is the manufacturer-recommended active substitute, ensuring continued component availability and manufacturing support.

Q: Are regulatory certifications equivalent between these parts?

A: Both the OPB611 and OPB621 are ROHS3 compliant and REACH unaffected, supporting equivalent regulatory deployment in applicable markets.

Q: Does the package type remain consistent?

A: Yes. Both parts use identical module packaging with PC pins in slot-type configuration, maintaining mechanical compatibility with existing through-hole PCB layouts.

Q: What is the difference in output configuration?

A: The OPB611 features transistor output with integrated base-emitter resistor module. The OPB621 provides NPN open collector output. Circuit design must accommodate this output stage difference during substitution.