OPB903W55 Equivalent & Substitute Parts

Part Overview

The OPB903W55 is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor features a 0.375" (9.53mm) sensing distance with NPN open collector inverted output configuration and wire lead packaging for chassis mount applications.

The OPB903W55 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for new designs and field replacements.

Substiute Parts

OPB903W55

TT Electronics/Optek TechnologyIn Stock: 3172OPB903W55 Datasheet

Current PartRFQ

OPB903W55Z

TT Electronics/Optek TechnologyIn Stock: 3708OPB903W55Z Datasheet

DirectRFQ

OPB913W55Z

TT Electronics/Optek TechnologyIn Stock: 967OPB913W55Z Datasheet

MFR RecommendedRFQ

OPB903W55Z

TT Electronics/Optek TechnologyIn Stock: 3708OPB903W55Z Datasheet

DirectRFQ

OPB913W55Z

TT Electronics/Optek TechnologyIn Stock: 967OPB913W55Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPB903W55 are identified based on electrical and mechanical parameter equivalence within the Photologic® optical sensor product line. The substitution criteria are:

• Identical sensing distance: 0.375" (9.53mm)
• Identical sensing method: Through-Beam
• Identical output configuration: NPN - Open Collector, Inverted
• Identical mounting type: Chassis Mount
• Identical electrical specifications: 4.75V ~ 5.25V supply voltage, 15 mA supply current, 70ns response time
• Identical operating temperature range: -40°C ~ 85°C
• Identical package type: Module, Wire Leads
• Same manufacturer: TT Electronics/Optek Technology

Two substitute parts meet these criteria: OPB903W55Z and OPB913W55Z. Both are active products with current availability and improved compliance status compared to the obsolete OPB903W55.

Parameter Comparison

Engineering Selection Recommendations

Both OPB903W55Z and OPB913W55Z are direct electrical and mechanical equivalents to the OPB903W55. Selection between these substitutes is based on product status and regulatory compliance:

OPB903W55Z is the direct replacement part, maintaining the same base product number (OPB903) while offering active product status and ROHS3 compliance. This part is the primary substitute for direct replacement applications.

OPB913W55Z is the manufacturer-recommended alternative, utilizing the OPB913 base product number while maintaining identical electrical and mechanical specifications. This part is also active and ROHS3 compliant. Both substitute parts are available in bulk packaging and carry REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can OPB903W55Z and OPB913W55Z be used interchangeably with OPB903W55?

A: Yes. Both substitute parts match all electrical and mechanical parameters of the original part, including sensing distance, output configuration, supply voltage and current, response time, operating temperature range, and package type.

Q: What is the difference between OPB903W55Z and OPB913W55Z?

A: Both parts are functionally equivalent with identical electrical and mechanical specifications. The difference lies in the base product number designation (OPB903 versus OPB913). Both are active products with ROHS3 compliance and current inventory availability.

Q: Why is the OPB903W55 listed as obsolete?

A: The OPB903W55 carries obsolete product status. The active equivalents OPB903W55Z and OPB913W55Z provide continued access to this sensor technology with improved regulatory compliance.

Q: Are there packaging differences between the original and substitute parts?

A: The original OPB903W55 packaging is not specified in available documentation. Both substitute parts are supplied in bulk packaging. All three parts use identical Module, Wire Leads package type for chassis mount applications.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both OPB903W55Z and OPB913W55Z are ROHS3 compliant and REACH unaffected, meeting current regulatory standards. The original OPB903W55 is RoHS non-compliant.