OPB703W Equivalent & Substitute Parts

Part Overview

The OPB703W is a reflective optical sensor manufactured by TT Electronics/Optek Technology, designed for 0.150" (3.81mm) PCB mount applications. This component functions as a phototransistor-based sensor for detecting reflected light in proximity sensing applications. The OPB703W is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

OPB703W

TT Electronics/Optek TechnologyIn Stock: 1175OPB703W Datasheet

Current PartRFQ

OPB703WZ

TT Electronics/Optek TechnologyIn Stock: 1332OPB703WZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB703W is determined by the following critical parameters that must remain consistent:

• Sensing distance: 0.150" (3.81mm)
• Sensing method: Reflective
• Output type: Phototransistor
• Voltage rating: 30 V maximum collector-emitter breakdown
• Current ratings: 25 mA maximum collector current, 40 mA maximum DC forward current
• Optical sensor category and functional equivalence

The OPB703WZ qualifies as a direct substitute based on identical electrical specifications and sensing characteristics. The primary difference lies in packaging configuration: the OPB703W uses through-hole PCB mount, while the OPB703WZ is supplied as a pre-wired chassis mount module. This distinction affects integration method but does not alter the core optical sensing functionality or electrical performance parameters.

Parameter Comparison

Engineering Selection Recommendations

The OPB703W is obsolete and no longer in active production. The OPB703WZ is the direct electrical equivalent and is currently in active production status with ROHS3 compliance certification.

Selection between these components depends on system integration requirements:

• OPB703W: Suitable only for legacy system maintenance where existing through-hole PCB mount designs are already established and component availability from inventory stock is confirmed.

• OPB703WZ: Recommended for new designs and ongoing production support. This component maintains identical electrical and optical specifications while offering active product status and improved regulatory compliance (ROHS3). The pre-wired module configuration requires mechanical integration adjustment from the original through-hole design.

Both components share identical electrical performance parameters and sensing characteristics, ensuring functional equivalence in reflective optical sensing applications within the specified 0.150" (3.81mm) sensing distance range.

Frequently Asked Questions (FAQ)

Q: Can OPB703WZ directly replace OPB703W in existing PCB designs?

A: Electrical substitution is valid; both components have identical voltage, current, and optical sensing specifications. However, mechanical integration differs: OPB703W is through-hole PCB mount, while OPB703WZ is a pre-wired chassis mount module. PCB layout modifications are required.

Q: What is the sensing distance specification for both components?

A: Both OPB703W and OPB703WZ operate at 0.150" (3.81mm) sensing distance using reflective optical sensing method with phototransistor output.

Q: Are there compliance differences between OPB703W and OPB703WZ?

A: Yes. OPB703W is RoHS non-compliant. OPB703WZ is ROHS3 compliant. Both are REACH unaffected and classified under ECCN EAR99.

Q: What are the maximum electrical ratings for these sensors?

A: Both components share identical ratings: 30 V maximum collector-emitter breakdown voltage, 25 mA maximum collector current, and 40 mA maximum DC forward current.

Q: Why is OPB703W listed as obsolete?

A: OPB703W has been discontinued by the manufacturer. OPB703WZ remains in active production and serves as the current equivalent for this sensor family.