OPB744W Equivalent & Substitute Parts

Part Overview

The OPB744W is a reflective optical sensor manufactured by TT Electronics/Optek Technology, designed for 0.150" (3.81mm) sensing distance applications. This component features a phototransistor output and chassis mount configuration with pre-wired module packaging. The OPB744W is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

OPB744W

TT Electronics/Optek TechnologyIn Stock: 977OPB744W Datasheet

Current PartRFQ

OPB744WZ

TT Electronics/Optek TechnologyIn Stock: 845OPB744WZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB744W is determined by strict equivalence across the following critical parameters:

• Sensing Distance: 0.150" (3.81mm) — must match exactly
• Sensing Method: Reflective configuration — must match exactly
• Output Type: Phototransistor — must match exactly
• Electrical Ratings: Voltage (30 V max) and current (40 mA max) — must meet or exceed
• Mounting Type: Chassis Mount — must match exactly
• Package Configuration: Module, Pre-Wired — must match exactly
• Operating Temperature: -40°C ~ 80°C — must support full range

The OPB744WZ meets all substitution criteria as a direct equivalent part from the same manufacturer and base product family (OPB744).

Parameter Comparison

Engineering Selection Recommendations

The OPB744WZ is the direct substitute for the obsolete OPB744W. Both parts share identical electrical and mechanical specifications, including sensing distance, output type, voltage/current ratings, and operating temperature range.

The primary distinction is product status and regulatory compliance. The OPB744W is obsolete and RoHS non-compliant, while the OPB744WZ is an active product with ROHS3 compliance. For new designs and ongoing production requiring regulatory compliance, the OPB744WZ is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 export classification.

Packaging differs between the two parts: OPB744W uses standard packaging while OPB744WZ is supplied in bulk packaging. This distinction does not affect functional or electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can OPB744WZ directly replace OPB744W in existing applications?

A: Yes. The OPB744WZ is electrically and mechanically identical to the OPB744W across all critical parameters: sensing distance (0.150"), sensing method (reflective), output type (phototransistor), voltage rating (30 V max), current rating (40 mA max), mounting type (chassis mount), and operating temperature range (-40°C ~ 80°C).

Q: What is the difference between OPB744W and OPB744WZ?

A: The OPB744W is obsolete and RoHS non-compliant. The OPB744WZ is an active product with ROHS3 compliance. Functionally and electrically, both parts are equivalent. Packaging format differs: OPB744W uses standard packaging while OPB744WZ is supplied in bulk.

Q: Why should I use OPB744WZ instead of OPB744W?

A: The OPB744W is obsolete, making long-term availability uncertain. The OPB744WZ is an active product from the same manufacturer with identical specifications and improved regulatory compliance (ROHS3). For new designs and production continuity, OPB744WZ is the recommended selection.

Q: Are there any compatibility concerns when switching from OPB744W to OPB744WZ?

A: No compatibility concerns exist. Both parts are from the same base product family (OPB744) and share identical electrical ratings, sensing characteristics, and mounting specifications. Direct substitution is possible without circuit or mechanical modifications.

Q: What certifications apply to both parts?

A: Both OPB744W and OPB744WZ maintain REACH Unaffected status and EAR99 export classification. The OPB744WZ additionally carries ROHS3 compliance, while the OPB744W is RoHS non-compliant.