OPB941W55Z Equivalent & Substitute Parts

Part Overview

The OPB941W55Z is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor module features 0.125" (3.18mm) sensing distance with wire leads and NPN open collector output configuration. The part is Active status and widely used in industrial sensing applications requiring reliable through-beam detection. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the Photologic® product line, ensuring functional interchangeability within system designs.

Substiute Parts

OPB941W55Z

TT Electronics/Optek TechnologyIn Stock: 792OPB941W55Z Datasheet

Current PartRFQ

OPB931W51Z

TT Electronics/Optek TechnologyIn Stock: 1143OPB931W51Z Datasheet

MFR RecommendedRFQ

OPB931W55Z

TT Electronics/Optek TechnologyIn Stock: 1501OPB931W55Z Datasheet

MFR RecommendedRFQ

OPB941W51Z

TT Electronics/Optek TechnologyIn Stock: 6980OPB941W51Z Datasheet

MFR RecommendedRFQ

OPB981L51Z

TT Electronics/Optek TechnologyIn Stock: 1884OPB981L51Z Datasheet

MFR RecommendedRFQ

OPB981P11Z

TT Electronics/Optek TechnologyIn Stock: 1132OPB981P11Z Datasheet

MFR RecommendedRFQ

OPB981T51Z

TT Electronics/Optek TechnologyIn Stock: 1556OPB981T51Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPB941W55Z are qualified based on strict electrical and mechanical parameter equivalence within the Photologic® optical sensor family. All substitute parts maintain identical specifications across the following critical parameters:

• Sensing Method: Through-Beam
• Sensing Distance: 0.125" (3.18mm)
• Output Configuration: NPN - Open Collector, Buffer
• Supply Voltage Range: 4.75V ~ 5.25V
• Supply Current: 15 mA
• Response Time: 70ns
• Operating Temperature Range: -40°C ~ 70°C
• Mounting Type: Chassis Mount
• Package Type: Module, Wire Leads
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

Substitution is valid across base product numbers OPB931, OPB941, and OPB981 within the Photologic® series, as these variants share identical functional and electrical characteristics for through-beam sensing applications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full compliance with ROHS3 and REACH regulations. Selection among OPB941W55Z and its substitutes is determined by availability and application-specific wire lead configurations, as all parts share identical electrical performance and environmental operating specifications. The OPB941W51Z variant offers the highest inventory availability at 6965 units. Parts from the OPB931 and OPB981 base product families provide functionally equivalent alternatives with comparable stock levels. Wire lead configuration differences (indicated by suffix designations) do not affect electrical or sensing performance and are determined by mechanical integration requirements within the target application.

Frequently Asked Questions (FAQ)

Q: Can OPB931W51Z replace OPB941W55Z in an existing design? A: Yes. Both parts maintain identical electrical specifications, sensing distance, output configuration, supply voltage, current draw, response time, and operating temperature range. Substitution is valid provided the wire lead configuration is compatible with the mechanical assembly.

Q: What is the difference between OPB941W55Z and OPB941W51Z? A: Both parts share the same base product number (OPB941) and identical electrical and sensing specifications. The suffix designations indicate wire lead configuration variations. Electrical performance and sensing distance are equivalent.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts, including OPB931W51Z, OPB931W55Z, OPB941W51Z, OPB981L51Z, OPB981P11Z, and OPB981T51Z, are ROHS3 Compliant and REACH Unaffected.

Q: Can I use OPB981 series parts as substitutes for OPB941W55Z? A: Yes. OPB981L51Z, OPB981P11Z, and OPB981T51Z maintain identical electrical and sensing parameters. Substitution is valid across the OPB931, OPB941, and OPB981 base product families within the Photologic® series.

Q: What determines compatibility between these optical sensor modules? A: Compatibility is determined by matching sensing method (through-beam), sensing distance (0.125"), output configuration (NPN open collector), supply voltage (4.75V ~ 5.25V), and operating temperature range (-40°C ~ 70°C). All listed parts meet these criteria.

Q: Is there a difference in response time between substitute parts? A: No. All substitute parts maintain a response time of 70ns, ensuring equivalent switching performance in time-critical applications.