OPB617 Equivalent & Substitute Parts

Part Overview

The OPB617 is a through-beam optical sensor manufactured by TT Electronics/Optek Technology, designed for PCB-mounted applications with a 0.150" (3.81mm) sensing distance. This component operates as part of the Photologic® series and features inverted output with pull-up resistor configuration. The OPB617 is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

OPB617

TT Electronics/Optek TechnologyIn Stock: 936OPB617 Datasheet

Current PartRFQ

OPB618

TT Electronics/Optek TechnologyIn Stock: 3360OPB618 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB617 is based on the following critical parameters that must remain consistent across equivalent components:

• Sensing Distance: 0.150" (3.81mm) through-beam configuration
• Mounting Type: Through Hole PCB Mount
• Supply Voltage Range: 4.5V ~ 16V
• Current Consumption: 12 mA
• Response Time: 30ns
• Operating Temperature Range: -40°C ~ 100°C
• Series Compatibility: Photologic® optical sensor family

The OPB618 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction lies in output configuration: the OPB617 features pull-up resistor inverted output, while the OPB618 provides NPN open collector inverted output. Both configurations deliver inverted logic states and are functionally compatible in applications where the output stage can accommodate the different transistor-level implementations.

Parameter Comparison

Engineering Selection Recommendations

The OPB618 is the designated manufacturer-recommended substitute for the obsolete OPB617. Both components maintain identical electrical performance specifications including supply voltage range, current consumption, response time, and operating temperature limits. The OPB618 carries active product status, ensuring continued availability and manufacturing support.

Both components satisfy ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The transition from pull-up resistor output to NPN open collector output represents a standard evolution in optical sensor design and does not compromise functional compatibility in properly designed circuits.

Selection of the OPB618 is appropriate for applications requiring direct replacement of the OPB617, particularly in legacy system maintenance where the 0.150" (3.81mm) through-beam sensing distance and PCB mount configuration are specified design requirements.

Frequently Asked Questions (FAQ)

Q: Can the OPB618 directly replace the OPB617 in existing PCB designs?

A: The OPB618 is mechanically and electrically compatible with the OPB617 in through-hole PCB mount applications. The output configuration difference (pull-up resistor versus NPN open collector) requires circuit-level evaluation to confirm compatibility with the existing output stage design.

Q: What is the primary reason for substituting the OPB617?

A: The OPB617 is classified as obsolete. The OPB618 provides an active, manufacturer-supported alternative with identical core sensing specifications.

Q: Are the sensing distance and response time identical between these components?

A: Yes. Both the OPB617 and OPB618 maintain 0.150" (3.81mm) sensing distance and 30ns response time specifications.

Q: Do both components meet current compliance standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the difference in output configuration between these sensors?

A: The OPB617 features pull-up resistor inverted output, while the OPB618 provides NPN open collector inverted output. Both deliver inverted logic states but use different transistor-level implementations.

Q: Are the supply voltage and current specifications the same?

A: Yes. Both components operate at 4.5V ~ 16V supply voltage with 12 mA current consumption and support the same -40°C ~ 100°C operating temperature range.