OPB660T Equivalent & Substitute Parts

Part Overview

The OPB660T is an optical sensor manufactured by TT Electronics/Optek Technology, designed for through-beam sensing applications with a 0.125" (3.18mm) sensing distance. This component features transistor output with base-emitter resistor integration and is mounted on a PCB. The OPB660T is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

OPB660T

TT Electronics/Optek TechnologyIn Stock: 991OPB660T Datasheet

Current PartRFQ

OPB660N

TT Electronics/Optek TechnologyIn Stock: 2122OPB660N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The OPB660N serves as the direct substitute for the OPB660T. Substitution is valid based on the following criteria:

• Identical sensing distance: 0.125" (3.18mm)
• Identical sensing method: Through-Beam
• Identical output configuration: Transistor, Base-Emitter Resistor
• Identical electrical specifications: 50 mA DC forward current, 30 mA collector current, 24 V collector-emitter breakdown voltage
• Identical operating temperature range: -40°C ~ 100°C
• Identical mounting type: Through Hole PCB Mount
• Identical sensor type: Unamplified
• Identical compliance certifications: ROHS3 Compliant, REACH Unaffected

The primary distinction is product status: OPB660T is obsolete while OPB660N is active, with OPB660N available in bulk packaging.

Parameter Comparison

Engineering Selection Recommendations

The OPB660N is the direct replacement for the OPB660T. Selection of OPB660N is based on:

• Active product status with current manufacturing support
• Full electrical and functional equivalence across all specified parameters
• Identical compliance certifications (ROHS3, REACH Unaffected)
• Availability in bulk packaging for production applications
• Same through-hole PCB mount configuration for direct board-level substitution

Frequently Asked Questions (FAQ)

Q: Can OPB660N be used as a direct replacement for OPB660T in existing designs?

A: Yes. The OPB660N is electrically and functionally identical to the OPB660T across all specified parameters, including sensing distance, output configuration, current ratings, voltage ratings, and operating temperature range. PCB layout compatibility is maintained through identical through-hole mounting specifications.

Q: What is the primary reason for substitution?

A: The OPB660T is classified as obsolete. The OPB660N is the active equivalent part from the same manufacturer, ensuring continued supply chain availability and manufacturing support.

Q: Are there packaging differences between OPB660T and OPB660N?

A: Both parts use PCB Mount through-hole packaging. The OPB660N is available in bulk packaging, while the OPB660T packaging specification was not provided in the available data.

Q: Do compliance certifications differ between the two parts?

A: No. Both OPB660T and OPB660N carry identical ROHS3 compliance and REACH Unaffected status.

Q: What electrical parameters must match for substitution validity?

A: The following parameters must remain constant: 50 mA maximum DC forward current, 30 mA maximum collector current, 24 V maximum collector-emitter breakdown voltage, and -40°C to 100°C operating temperature range.