OPB704W Equivalent & Substitute Parts

Part Overview

The OPB704W is a reflective optical sensor manufactured by TT Electronics/Optek Technology, designed for 0.149" (3.8mm) sensing distance applications. This component is classified as a phototransistor-based optical sensor with chassis mount configuration and pre-wired module packaging. The OPB704W is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

OPB704W

TT Electronics/Optek TechnologyIn Stock: 723OPB704W Datasheet

Current PartRFQ

OPB704WZ

TT Electronics/Optek TechnologyIn Stock: 4642OPB704WZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB704W is determined by strict equivalence across the following critical parameters:

• Sensing Distance: 0.149" (3.8mm) — must match exactly for optical alignment and detection range
• Sensing Method: Reflective — determines the operational principle and application compatibility
• Output Type: Phototransistor — defines the electrical interface and signal characteristics
• Electrical Ratings: Voltage (30 V max), Collector Current (25 mA max), Forward Current (40 mA max) — must not be exceeded in the application circuit
• Mounting Type: Chassis Mount — ensures mechanical compatibility with existing installations
• Package Configuration: Module, Pre-Wired — maintains form factor and integration requirements

The OPB704WZ meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The OPB704WZ is the direct substitute for the obsolete OPB704W. Both components share identical electrical specifications, sensing characteristics, and mechanical form factors. The primary distinction is product lifecycle status: the OPB704W is obsolete, while the OPB704WZ is active and currently in production.

The OPB704WZ offers an additional compliance advantage: it meets ROHS3 standards, whereas the OPB704W is non-compliant. For new designs or systems requiring regulatory compliance with current environmental standards, the OPB704WZ is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, the OPB704WZ remains functionally equivalent and is the only available option from the original manufacturer.

Frequently Asked Questions (FAQ)

Q: Can the OPB704WZ directly replace the OPB704W in existing applications?

A: Yes. The OPB704WZ is electrically and mechanically equivalent to the OPB704W. All electrical ratings, sensing distance, output type, and mounting configuration are identical. No circuit modifications are required.

Q: What is the difference between OPB704W and OPB704WZ?

A: The OPB704W is obsolete; the OPB704WZ is the active production equivalent. The OPB704WZ is ROHS3 compliant, while the OPB704W is not. Functionally, both components are identical.

Q: Are there any packaging differences between these parts?

A: Both the OPB704W and OPB704WZ are supplied as pre-wired modules with chassis mount configuration. The OPB704W was originally supplied in standard packaging, while the OPB704WZ is available in bulk packaging. This does not affect component functionality or electrical performance.

Q: What are the critical parameters for substitution?

A: Substitution is valid only when the following parameters match: sensing distance (0.149" / 3.8mm), sensing method (reflective), output type (phototransistor), electrical ratings (30 V max, 25 mA collector current, 40 mA forward current), mounting type (chassis mount), and package configuration (module, pre-wired).

Q: Is the OPB704WZ suitable for new designs?

A: Yes. The OPB704WZ is the current production part and is recommended for all new designs. It provides the same functionality as the obsolete OPB704W with the added benefit of ROHS3 compliance.