OPB973P55 Equivalent & Substitute Parts

Part Overview

The OPB973P55 is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor is designed for 0.125" (3.18mm) PCB mount applications with NPN open collector inverted output configuration. The OPB973P55 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives within the same product family maintain identical electrical and mechanical specifications while offering current availability and manufacturing support.

Substiute Parts

OPB973P55

TT Electronics/Optek TechnologyIn Stock: 722OPB973P55 Datasheet

Current PartRFQ

OPB963N11

TT Electronics/Optek TechnologyIn Stock: 1021OPB963N11 Datasheet

MFR RecommendedRFQ

OPB963N51

TT Electronics/Optek TechnologyIn Stock: 2841OPB963N51 Datasheet

MFR RecommendedRFQ

OPB963P51

TT Electronics/Optek TechnologyIn Stock: 1095OPB963P51 Datasheet

MFR RecommendedRFQ

OPB963T11

TT Electronics/Optek TechnologyIn Stock: 756OPB963T11 Datasheet

MFR RecommendedRFQ

OPB963T51

TT Electronics/Optek TechnologyIn Stock: 1113OPB963T51 Datasheet

MFR RecommendedRFQ

OPB963T55

TT Electronics/Optek TechnologyIn Stock: 1461OPB963T55 Datasheet

MFR RecommendedRFQ

OPB973L51

TT Electronics/Optek TechnologyIn Stock: 778OPB973L51 Datasheet

MFR RecommendedRFQ

OPB973N11

TT Electronics/Optek TechnologyIn Stock: 1333OPB973N11 Datasheet

MFR RecommendedRFQ

OPB973N51

TT Electronics/Optek TechnologyIn Stock: 6222OPB973N51 Datasheet

MFR RecommendedRFQ

OPB973T51

TT Electronics/Optek TechnologyIn Stock: 1000OPB973T51 Datasheet

MFR RecommendedRFQ

OPB973T55

TT Electronics/Optek TechnologyIn Stock: 1539OPB973T55 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB973P55 is determined by strict equivalence across the following critical parameters:

• Sensing Distance: 0.125" (3.18mm)
• Sensing Method: Through-Beam
• Output Configuration: NPN - Open Collector, Inverted
• Mounting Type: Through Hole
• Current - Supply: 15 mA
• Voltage - Supply: 4.75V ~ 5.25V
• Response Time: 70ns
• Operating Temperature: -40°C ~ 70°C
• Package / Case: PCB Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

All substitute parts listed maintain identical specifications across these parameters. Substitution is valid based on electrical and mechanical compatibility within the Photologic® optical sensor family. The primary distinction between substitute parts is product status (active vs. obsolete) and packaging configuration (bulk vs. tape/reel).

Parameter Comparison

Engineering Selection Recommendations

The OPB973P55 is obsolete and should be replaced with an active equivalent from the Photologic® optical sensor family. All listed substitute parts maintain full electrical and mechanical compatibility with identical specifications for sensing distance, output configuration, supply voltage, supply current, response time, and operating temperature range.

Selection among substitute parts should be based on:

Product Status: All substitute parts are active and currently manufactured, ensuring long-term availability and manufacturing support compared to the obsolete OPB973P55.

Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original part.

Inventory Availability: OPB973N51 offers the highest inventory level at 6130 pieces, followed by OPB963N51 at 2795 pieces, providing supply chain flexibility for production requirements.

Base Product Series: OPB963 and OPB973 base product numbers are both represented among active substitutes, offering design flexibility within the same optical sensor family.

Frequently Asked Questions (FAQ)

Q: Can OPB963 series parts directly replace OPB973P55 in existing designs?

A: Yes. OPB963 series parts (OPB963N11, OPB963N51, OPB963P51, OPB963T11, OPB963T51, OPB963T55) maintain identical electrical and mechanical specifications to OPB973P55. All parameters including sensing distance, output configuration, supply voltage, supply current, response time, and operating temperature are equivalent.

Q: What is the difference between OPB973 and OPB963 base product numbers?

A: Both OPB973 and OPB963 are part of the Photologic® optical sensor family and share identical electrical and mechanical specifications for the parameters provided. The base product number distinction does not affect substitution compatibility.

Q: Does packaging configuration affect substitution compatibility?

A: Packaging configuration (bulk, tape/reel) does not affect electrical or mechanical compatibility. All substitute parts are PCB mount through-hole components with identical form factors. Packaging selection should be based on production assembly requirements and inventory management preferences.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original OPB973P55.

Q: Which substitute part offers the best inventory availability?

A: OPB973N51 provides the highest current inventory at 6130 pieces, followed by OPB963N51 at 2795 pieces. Both parts are active and suitable for immediate production use.

Q: Can substitute parts be used in new designs?

A: Yes. All substitute parts are active products with current manufacturing support. They are suitable for both replacement applications and new design implementations where through-beam optical sensing at 0.125" (3.18mm) distance with NPN open collector inverted output is required.