OP535C Equivalent & Substitute Parts Reference

Part Overview

The OP535C is a phototransistor optical sensor operating at 935nm wavelength in a T-1 through-hole package. Manufactured by TT Electronics/Optek Technology, this component is classified as obsolete. Due to its discontinued status, equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

OP535C

TT Electronics/Optek TechnologyIn Stock: 1196OP535C Datasheet

Current PartRFQ

OP535B

TT Electronics/Optek TechnologyIn Stock: 3345OP535B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP535C is determined by strict equivalence across the following electrical and mechanical parameters:

• Wavelength: 935nm (infrared detection range)
• Voltage Rating: 15 V collector-emitter breakdown maximum
• Current Specifications: 32 mA maximum collector current and 100 nA maximum dark current
• Power Dissipation: 100 mW maximum
• Physical Form Factor: T-1 through-hole package with top-view orientation
• Operating Temperature: -40°C to 100°C range
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The OP535B meets all these criteria and is the direct equivalent substitute for the obsolete OP535C.

Parameter Comparison

Engineering Selection Recommendations

The OP535B is the direct equivalent substitute for the OP535C. Both components share identical electrical specifications, mechanical form factors, and compliance certifications. The primary distinction is product status: the OP535C is obsolete while the OP535B remains in active production. Selection of the OP535B ensures continued access to this 935nm phototransistor technology while maintaining full electrical and mechanical compatibility with existing designs. Both parts maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for modern manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the OP535B directly replace the OP535C in existing designs?

A: Yes. The OP535B is electrically and mechanically identical to the OP535C across all specified parameters, including wavelength, voltage ratings, current specifications, power dissipation, package type, and operating temperature range. Direct substitution is supported without design modification.

Q: What is the primary reason for substitution?

A: The OP535C is classified as obsolete. The OP535B provides continued access to equivalent 935nm phototransistor functionality in an active product line.

Q: Are there packaging differences between OP535C and OP535B?

A: Both components use T-1 through-hole packaging with top-view orientation. The OP535B is available in bulk packaging, while the OP535C packaging specification was not provided. This does not affect electrical or mechanical compatibility.

Q: Do both parts meet current compliance standards?

A: Yes. Both the OP535C and OP535B are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What are the critical parameters for substitution verification?

A: Substitution is valid when the following parameters match: 935nm wavelength, 15 V collector-emitter breakdown voltage, 32 mA maximum collector current, 100 nA maximum dark current, 100 mW maximum power dissipation, T-1 through-hole package, top-view orientation, and -40°C to 100°C operating temperature range.