OP509C Equivalent & Substitute Parts

Part Overview

The OP509C is a phototransistor optical sensor manufactured by TT Electronics/Optek Technology, designed for 890nm wavelength detection with top view radial orientation. This component is classified as obsolete, with 967 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is essential for ongoing design support, maintenance, and production continuity. The OP509B serves as the manufacturer-recommended substitute, offering identical electrical and optical performance characteristics while maintaining active product status.

Substiute Parts

OP509C

TT Electronics/Optek TechnologyIn Stock: 1008OP509C Datasheet

Current PartRFQ

OP509B

TT Electronics/Optek TechnologyIn Stock: 845OP509B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP509C with the OP509B is based on strict equivalence across all critical electrical and optical parameters. The substitution logic is determined by the following key parameters:

• Wavelength (890nm): Both parts detect identical infrared wavelength, ensuring optical compatibility in sensor circuits.
• Voltage Rating (30 V Collector-Emitter Breakdown): Identical maximum voltage specification allows direct circuit replacement without redesign.
• Current Specifications (Ic Max: 10.6 mA, Id Max: 100 nA): Matching collector and dark current ratings ensure equivalent signal amplification and noise characteristics.
• Viewing Angle (50°): Identical angular field of view maintains optical system performance.
• Power Dissipation (100 mW Max): Equivalent thermal handling capability.
• Mounting and Orientation (Through Hole, Top View, Radial): Identical physical form factor and PCB interface.
• Operating Temperature Range (-40°C ~ 100°C): Matching thermal operating envelope.

The OP509B maintains all electrical and mechanical specifications of the OP509C while offering active product status and continued manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The OP509B is the direct equivalent substitute for the OP509C. Selection of the OP509B is supported by:

• Identical Electrical Performance: All voltage, current, and power specifications match exactly, enabling direct circuit replacement without modification.
• Active Product Status: The OP509B maintains active manufacturer status, ensuring continued availability, technical support, and compliance documentation.
• Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical export classification (EAR99), satisfying regulatory requirements across manufacturing jurisdictions.
• Equivalent Packaging and Thermal Characteristics: Matching MSL rating (1 - Unlimited) and operating temperature range (-40°C ~ 100°C) ensure compatibility with existing assembly and storage processes.

For applications currently using the OP509C, transition to the OP509B provides continuity of supply without design revision or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the OP509B directly replace the OP509C in existing designs?

A: Yes. The OP509B is electrically and mechanically equivalent to the OP509C. All critical parameters—wavelength, voltage rating, current specifications, viewing angle, power dissipation, mounting type, orientation, and operating temperature range—are identical. Direct substitution requires no circuit modification or PCB redesign.

Q: Why is the OP509C classified as obsolete?

A: The OP509C has reached end-of-life status with the manufacturer. The OP509B serves as the active replacement, offering identical performance with continued manufacturer support and supply availability.

Q: Are there packaging differences between the OP509C and OP509B?

A: Both parts use identical radial through-hole packaging with top view orientation. The OP509B is supplied in bulk packaging, while the OP509C packaging specification was not provided. This difference does not affect electrical or mechanical compatibility.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the OP509C and OP509B are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain MSL rating 1 (Unlimited) and identical HTSUS classification (8541.49.7080).

Q: What is the operating temperature range for both parts?

A: Both the OP509C and OP509B operate across the temperature range of -40°C to 100°C, ensuring compatibility in industrial and commercial applications with equivalent thermal performance.

Q: Are there any differences in dark current or collector current specifications?

A: No. Both parts specify identical maximum dark current (100 nA) and maximum collector current (10.6 mA), ensuring equivalent signal-to-noise performance and amplification characteristics in optical sensing circuits.