OP266AB Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP266AB is an infrared (IR) emitter operating at 850nm wavelength, designed for through-hole radial mounting applications. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing production and maintenance requirements. The OP266AB delivers 7.5mW/cm² radiant intensity at 20mA forward current with an 18° viewing angle, operating across the -40°C to 100°C temperature range.

Substiute Parts

OP266AB

TT Electronics/Optek TechnologyIn Stock: 901OP266AB Datasheet

Current PartRFQ

OP266AA

TT Electronics/Optek TechnologyIn Stock: 8637OP266AA Datasheet

MFR RecommendedRFQ

OP266AA

TT Electronics/Optek TechnologyIn Stock: 8637OP266AA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OP266AB is determined by strict alignment across the following critical parameters:

• Wavelength: 850nm (exact match required)
• Forward Current Rating: 50mA maximum (exact match required)
• Forward Voltage: 1.8V typical (exact match required)
• Viewing Angle: 18° (exact match required)
• Mounting Type: Through Hole radial configuration (exact match required)
• Operating Temperature Range: -40°C to 100°C (exact match required)
• Compliance: ROHS3 compliant, REACH unaffected (exact match required)

The OP266AA meets all substitution criteria as an active product from the same manufacturer series, providing direct functional equivalence for circuit-level replacement.

Parameter Comparison

Engineering Selection Recommendations

The OP266AA is the direct substitute for the OP266AB. Both components share identical electrical and mechanical specifications across all critical parameters: wavelength, current rating, voltage, viewing angle, and temperature operating range. The OP266AA maintains active product status with TT Electronics/Optek Technology, ensuring continued availability and supply chain reliability. Both parts carry ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

The OP266AA is recommended for all new designs and production replacements where the OP266AB is currently specified.

Frequently Asked Questions (FAQ)

Q: Can the OP266AA directly replace the OP266AB in existing circuits?

A: Yes. The OP266AA provides direct functional equivalence across all electrical parameters: 850nm wavelength, 50mA maximum forward current, 1.8V typical forward voltage, 18° viewing angle, and -40°C to 100°C operating temperature range. Through-hole radial mounting is identical.

Q: What is the difference in radiant intensity between these parts?

A: The OP266AB specifies 7.5mW/cm² minimum radiant intensity at 20mA, while the OP266AA specifies 5.5mW/cm² minimum at the same current. Both meet their respective specifications. Circuit designs must account for the OP266AA's lower radiant intensity if optical output is a critical parameter.

Q: Are there packaging differences between OP266AB and OP266AA?

A: Both components use radial through-hole packaging. The OP266AB was supplied in standard packaging, while the OP266AA is available in bulk packaging. The physical component form factor remains identical for PCB mounting.

Q: Why is the OP266AB obsolete?

A: The OP266AB has been discontinued by the manufacturer. The OP266AA serves as the active equivalent within the OP266 series and is the recommended replacement for ongoing production and maintenance applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the OP266AB and OP266AA are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use.