OPB686 Equivalent & Substitute Parts

Part Overview

The OPB686 is an optical sensor designed for PCB mount applications using optical flag sensing technology. It features NPN open collector buffer output configuration and operates across a wide supply voltage range of 4.5V to 16V. The component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The OPB686 is part of the Photologic® series from TT Electronics/Optek Technology and maintains ROHS3 compliance with unlimited moisture sensitivity rating.

Substiute Parts

OPB686

TT Electronics/Optek TechnologyIn Stock: 1337OPB686 Datasheet

Current PartRFQ

OPB680

TT Electronics/Optek TechnologyIn Stock: 1238OPB680 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB686 is determined by the following critical parameters that must align across candidate parts:

Primary Substitution Criteria:

• Sensing Method: Optical Flag technology
• Mounting Type: Through Hole configuration
• Package / Case: PCB Mount form factor
• Operating Temperature Range: -40°C ~ 100°C minimum
• Supply Voltage Compatibility: Overlap with 4.5V ~ 16V range
• RoHS Compliance: ROHS3 Compliant status
• Moisture Sensitivity: MSL 1 (Unlimited)

The OPB680 qualifies as a manufacturer-recommended substitute based on matching optical flag sensing methodology, through-hole mounting, PCB mount packaging, identical operating temperature range, and equivalent compliance certifications. While output configuration differs (transistor with base-emitter resistor versus NPN open collector buffer), both parts serve optical flag detection applications with compatible electrical interfaces for PCB integration.

Parameter Comparison

Engineering Selection Recommendations

The OPB680 is designated as the manufacturer-recommended substitute for the obsolete OPB686. Both components maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99 export classification) and share the same HTSUS commodity code, confirming regulatory equivalence for procurement and supply chain purposes.

The OPB680 carries active product status, ensuring continued availability and manufacturing support compared to the obsolete OPB686. Both parts operate within the identical temperature range (-40°C to 100°C) and maintain unlimited moisture sensitivity rating, supporting deployment in equivalent environmental conditions.

Selection between these parts depends on output configuration requirements. The OPB686 provides NPN open collector buffer output, while the OPB680 integrates transistor output with base-emitter resistor. Circuit design must accommodate the specific output characteristics of the selected part.

Frequently Asked Questions (FAQ)

Q: Why is the OPB686 being phased out? A: The OPB686 is classified as obsolete by the manufacturer. The OPB680 represents the active product line continuation for optical flag sensing applications in PCB mount configurations.

Q: Are the OPB686 and OPB680 pin-compatible? A: Both parts use through-hole PCB mount packaging. Pin compatibility depends on specific circuit board layout and output configuration requirements. The OPB686 features NPN open collector buffer output, while the OPB680 provides transistor output with base-emitter resistor. Circuit interface design must account for these output differences.

Q: Can the OPB680 operate at the same supply voltage as the OPB686? A: The OPB686 operates at 4.5V to 16V supply voltage. The OPB680 specifications do not explicitly state supply voltage range in the provided data. Verify OPB680 supply voltage compatibility with your application requirements before substitution.

Q: Do both parts meet the same compliance standards? A: Yes. Both the OPB686 and OPB680 are ROHS3 compliant, REACH unaffected, and classified under EAR99 export control. Both carry HTSUS code 8541.49.8000 and maintain MSL 1 (unlimited) moisture sensitivity rating.

Q: What is the key difference between these optical sensors? A: The primary difference is output configuration. The OPB686 provides NPN open collector buffer output optimized for direct logic interface. The OPB680 integrates transistor output with base-emitter resistor, providing integrated amplification. Both employ optical flag sensing methodology for PCB mount applications.

Q: Is the OPB680 available in the same packaging as the OPB686? A: Both parts use PCB mount through-hole packaging. The OPB680 is supplied in bulk packaging format. Verify mechanical fit and pinout alignment with your specific PCB design before implementation.