OP268FC Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP268FC is an infrared (IR) emitter operating at 890nm wavelength, designed for through-hole radial mounting applications. Manufactured by TT Electronics/Optek Technology, this component delivers 50mA maximum forward current with a typical forward voltage of 1.5V and a radiant intensity of 0.36mW/cm² at 20mA. The OP268FC is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

OP268FC

TT Electronics/Optek TechnologyIn Stock: 727OP268FC Datasheet

Current PartRFQ

OP268FB

TT Electronics/Optek TechnologyIn Stock: 2275OP268FB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP268FC is determined by strict equivalence across the following critical parameters:

• Wavelength: 890nm (exact match required)
• Current rating: 50mA maximum forward current
• Voltage characteristics: 1.5V typical forward voltage
• Mounting configuration: Through-hole radial package
• Viewing angle: 104°
• Operating temperature range: -40°C to 100°C
• Compliance standards: ROHS3 compliant

The OP268FB qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction is an improved radiant intensity specification (0.45mW/cm² versus 0.36mW/cm²), which represents enhanced performance within the same functional envelope.

Parameter Comparison

Engineering Selection Recommendations

The OP268FB is the manufacturer-recommended substitute for the obsolete OP268FC. Both components maintain identical electrical specifications for forward current, forward voltage, wavelength, and viewing angle. The OP268FB carries active product status with current manufacturing support, ensuring long-term availability and supply chain continuity.

Both parts satisfy ROHS3 compliance requirements and operate across the identical temperature range of -40°C to 100°C. The OP268FB demonstrates improved radiant intensity performance at 0.45mW/cm² compared to the OP268FC specification of 0.36mW/cm², providing enhanced optical output within the same mechanical and electrical constraints.

Frequently Asked Questions (FAQ)

Q: Can the OP268FB directly replace the OP268FC in existing designs?

A: Yes. The OP268FB matches all critical electrical parameters (50mA forward current, 1.5V forward voltage, 890nm wavelength) and mechanical specifications (through-hole radial package, 104° viewing angle). The improved radiant intensity of the OP268FB represents a performance enhancement rather than a deviation from the original specification.

Q: What is the primary reason for substitution?

A: The OP268FC is classified as obsolete. The OP268FB is the active equivalent from the same manufacturer, ensuring continued availability and manufacturing support.

Q: Are there packaging differences between these parts?

A: The OP268FC is specified with radial through-hole packaging. The OP268FB maintains identical radial through-hole configuration, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the OP268FC and OP268FB are ROHS3 compliant and operate across the same temperature range of -40°C to 100°C.

Q: What is the significance of the radiant intensity difference?

A: The OP268FB specifies 0.45mW/cm² at 20mA compared to the OP268FC at 0.36mW/cm². This represents improved optical output performance and does not create compatibility issues in applications designed for the original specification.