OPL812-OC Equivalent & Substitute Parts

Part Overview

The OPL812-OC is an optical sensor from the Photologic® series manufactured by TT Electronics / Optek Technology. This component functions as a 935nm photo detector with logic output in an open collector configuration, housed in a TO-18 small package. The OPL812-OC is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations where this sensor type is required.

Substiute Parts

OPL812-OC

TT Electronics / Optek TechnologyIn Stock: 793OPL812-OC Datasheet

Current PartRFQ

OPL811-OC

TT Electronics / Optek TechnologyIn Stock: 758OPL811-OC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OPL812-OC is determined by the following critical parameters that must remain consistent:

• Wavelength: 935nm
• Package / Case: TO-18 small
• Operating Temperature Range: -55°C to 105°C
• Series: Photologic®
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The OPL811-OC qualifies as a direct substitute based on matching all critical parameters. The primary functional difference is the output logic configuration: the OPL812-OC provides standard open collector output, while the OPL811-OC provides open collector inverter output. This distinction is significant for circuit design but does not prevent substitution when the inverter logic is acceptable or can be accommodated in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The OPL811-OC is the qualified substitute for the obsolete OPL812-OC. Both components maintain identical wavelength specifications (935nm), thermal operating range (-55°C to 105°C), package form factor (TO-18 small), and regulatory compliance status (ROHS3 Compliant, REACH Unaffected).

The OPL811-OC holds active product status, ensuring ongoing availability and manufacturing support. This addresses the primary limitation of the OPL812-OC, which is classified as obsolete and subject to inventory depletion.

The functional distinction between these parts is the output logic configuration. The OPL812-OC provides standard open collector output, while the OPL811-OC provides open collector inverter output. Circuit designs must account for this logic inversion when implementing the OPL811-OC as a replacement.

Frequently Asked Questions (FAQ)

Q: Can the OPL811-OC directly replace the OPL812-OC without circuit modifications?

A: The OPL811-OC matches all critical electrical and mechanical parameters of the OPL812-OC. However, the output logic is inverted. Direct replacement without circuit modification is possible only if the application logic can accommodate inverted output. Otherwise, signal conditioning or logic inversion circuitry must be implemented.

Q: Are the package dimensions identical between OPL812-OC and OPL811-OC?

A: Both components use the TO-18 small package form factor, ensuring mechanical compatibility in PCB layouts and socket configurations.

Q: What is the significance of the OPL812-OC being classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Existing inventory may be limited and subject to depletion. The OPL811-OC, with active product status, provides a path for long-term component availability.

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

A: Yes. Both the OPL812-OC and OPL811-OC are ROHS3 Compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited), indicating identical compliance profiles.

Q: What is the wavelength specification for these optical sensors?

A: Both components operate at 935nm wavelength, a standard infrared wavelength for photo detector applications in the Photologic® series.