OPL561-OC Equivalent & Substitute Parts

Part Overview

The OPL561-OC is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a Photologic® series photo detector with logic output. This component features a 935nm wavelength detector with open collector inverter output in a 3-SIP side-view package configuration. The part maintains active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent functional performance is required due to inventory constraints, design flexibility, or supply chain considerations while maintaining compatibility with the specified electrical and mechanical parameters.

Substiute Parts

OPL561-OC

TT Electronics/Optek TechnologyIn Stock: 784OPL561-OC Datasheet

Current PartRFQ

QSE159

onsemiIn Stock: 1149QSE159 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OPL561-OC is determined by the following critical parameters:

• Package Configuration: 3-SIP, Side View form factor
• Output Type: Open Collector Inverter logic output
• Operating Temperature Range: -40°C ~ 85°C
• Wavelength Compatibility: Optical sensors in the 880nm–935nm range
• Compliance Status: ROHS3 compliance and REACH unaffected designation
• Product Status: Active manufacturing status

The QSE159 from onsemi qualifies as a manufacturer-recommended substitute based on matching package type, output configuration, operating temperature range, and compliance certifications. While the QSE159 operates at 880nm wavelength compared to the OPL561-OC's 935nm, both wavelengths fall within the near-infrared spectrum and are compatible with standard optical sensor applications utilizing side-looking detector geometry.

Parameter Comparison

Engineering Selection Recommendations

Both the OPL561-OC and QSE159 maintain active product status with full ROHS3 compliance and REACH unaffected designation. Selection between these components should be based on application-specific wavelength requirements and supply availability. The OPL561-OC operates at 935nm, while the QSE159 operates at 880nm. Both components share identical package geometry (3-SIP, Side View), output configuration (Open Collector Inverter), and operating temperature specifications (-40°C ~ 85°C). Component selection should align with the optical source wavelength used in the target application to ensure optimal detector responsivity.

Frequently Asked Questions (FAQ)

Q: Can the QSE159 directly replace the OPL561-OC in existing designs?

A: The QSE159 is mechanically and electrically compatible with the OPL561-OC due to matching package type, output configuration, and operating temperature range. However, the wavelength difference (880nm vs. 935nm) must be evaluated against the optical source wavelength in the application. If the application uses an 880nm or compatible infrared source, direct substitution is feasible.

Q: What is the significance of the wavelength difference between these parts?

A: Wavelength determines the spectral responsivity of the photo detector. The OPL561-OC is optimized for 935nm sources, while the QSE159 is optimized for 880nm sources. Selection should match the infrared emitter wavelength in the system to maximize detector sensitivity and signal integrity.

Q: Are both parts suitable for the full operating temperature range?

A: Yes. Both the OPL561-OC and QSE159 are rated for -40°C ~ 85°C operating temperature, ensuring compatibility across industrial and commercial temperature environments.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, meeting current regulatory standards for electronic component distribution and use.

Q: What packaging considerations apply to these components?

A: Both parts utilize 3-SIP (Single In-line Package) with side-view detector orientation. This package type is designed for through-hole mounting on printed circuit boards with the detector element positioned for side-looking optical applications.