OP565C Equivalent & Substitute Parts

Part Overview

The OP565C is a 930nm side view radial phototransistor manufactured by TT Electronics / Optek Technology. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The OP565C operates as a photodetector in optical sensing applications requiring 930nm wavelength sensitivity with side view orientation and through-hole mounting.

Substiute Parts

OP565C

TT Electronics / Optek TechnologyIn Stock: 910OP565C Datasheet

Current PartRFQ

QSE133

onsemiIn Stock: 20490QSE133 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP565C is determined by the following critical parameters:

• Wavelength Sensitivity: The OP565C operates at 930nm. The QSE133 substitute operates at 880nm, representing a 50nm shift in the near-infrared spectrum. Both wavelengths fall within the near-infrared region used for optical sensing applications.
• Mounting Type & Orientation: Both parts require through-hole mounting with side view orientation and radial packaging, ensuring mechanical compatibility.
• Electrical Ratings: The OP565C has a maximum collector-emitter breakdown voltage of 15V and maximum collector current of 9.8mA. The QSE133 provides higher electrical ratings (30V breakdown voltage), making it suitable for applications with higher voltage margins.
• Dark Current: Both parts specify a maximum dark current of 100nA, ensuring comparable baseline performance in low-light conditions.
• Power Dissipation: Both parts are rated for 100mW maximum power, maintaining thermal design compatibility.
• Operating Temperature Range: Both parts operate across -40°C to 100°C, ensuring thermal compatibility.
• Compliance & Certifications: Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The QSE133 is an active product manufactured by onsemi, providing continuity for applications previously using the obsolete OP565C. Both components meet ROHS3 compliance and REACH regulatory requirements. The QSE133 offers enhanced electrical performance with a 30V collector-emitter breakdown voltage compared to the OP565C's 15V rating, providing additional design margin in voltage-sensitive applications. Both parts maintain identical dark current specifications (100nA) and power dissipation limits (100mW), ensuring functional equivalence in optical sensing circuits. The wavelength difference (930nm vs. 880nm) and viewing angle variation (56° vs. 50°) must be evaluated against specific application requirements to confirm optical performance compatibility.

Frequently Asked Questions (FAQ)

Q: Can the QSE133 directly replace the OP565C in existing designs?

A: The QSE133 provides mechanical and electrical compatibility through identical mounting type (through-hole), orientation (side view), packaging (radial), operating temperature range (-40°C to 100°C), and dark current specifications (100nA). However, the wavelength difference (880nm vs. 930nm) and viewing angle variation (50° vs. 56°) require evaluation against the specific optical sensing application to confirm performance equivalence.

Q: What are the key differences between these parts?

A: The primary differences are wavelength (OP565C at 930nm, QSE133 at 880nm), viewing angle (OP565C at 56°, QSE133 at 50°), and collector-emitter breakdown voltage (OP565C at 15V, QSE133 at 30V). Both parts share identical dark current (100nA), power rating (100mW), and operating temperature range (-40°C to 100°C).

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the OP565C and QSE133 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the significance of the wavelength difference?

A: The OP565C operates at 930nm while the QSE133 operates at 880nm. Both wavelengths are in the near-infrared spectrum. The 50nm difference may affect optical coupling efficiency and spectral response in applications with wavelength-specific light sources or filters. Application-specific testing is necessary to confirm compatibility.

Q: Does the viewing angle difference impact substitution?

A: The OP565C has a 56° viewing angle while the QSE133 has a 50° viewing angle. This 6° difference may affect the field of view in optical sensing applications. Applications requiring the full 56° field of view should evaluate whether the 50° angle of the QSE133 meets performance requirements.

Q: Why is the QSE133 rated for higher breakdown voltage?

A: The QSE133 provides a 30V collector-emitter breakdown voltage compared to the OP565C's 15V rating. This higher rating provides additional design margin and may allow operation in higher voltage circuit configurations, though both parts are suitable for the same power dissipation level (100mW).