OP268FPS Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP268FPS is an infrared (IR) emitter manufactured by TT Electronics/Optek Technology, designed for applications requiring 850nm wavelength emission at 50mA forward current. This component features a radial through-hole package with a 50° viewing angle and operates across the -40°C to 100°C temperature range. The product is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

OP268FPS

TT Electronics/Optek TechnologyIn Stock: 869OP268FPS Datasheet

Current PartRFQ

XTHI30BF

SunLEDIn Stock: 2002XTHI30BF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the OP268FPS are identified based on the following critical parameters that define functional compatibility:

• Type: Infrared (IR) Emitter
• Mounting Type: Through Hole
• Package / Case: Radial
• Current - DC Forward (If) Max: 50mA
• Viewing Angle: 50°
• Wavelength Range: Near-infrared spectrum (850nm-880nm acceptable for most applications)
• Compliance: ROHS3 Compliant, REACH Unaffected

The XTHI30BF from SunLED meets these substitution criteria. While the wavelength differs slightly (880nm vs. 850nm), both components operate at identical maximum forward current (50mA), share the same radial through-hole package configuration, maintain the same 50° viewing angle, and provide equivalent mechanical and electrical interfaces.

Parameter Comparison

Engineering Selection Recommendations

The XTHI30BF is the manufacturer-recommended substitute for the obsolete OP268FPS. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system support.

The OP268FPS operates to 100°C maximum ambient temperature, while the XTHI30BF operates to 85°C maximum ambient temperature. Applications requiring operation above 85°C must retain the original OP268FPS or identify alternative components with extended temperature ratings.

The XTHI30BF operates at a lower typical forward voltage (1.6V vs. 1.8V), resulting in reduced power dissipation. The wavelength difference (880nm vs. 850nm) falls within the near-infrared spectrum; compatibility depends on the specific photodetector or sensor used in the receiving circuit.

The XTHI30BF is currently in active production with 1931 pieces in stock, providing supply continuity for ongoing manufacturing and repair operations.

Frequently Asked Questions (FAQ)

Q: Can the XTHI30BF directly replace the OP268FPS in existing designs?

A: The XTHI30BF shares identical mechanical and electrical interfaces (radial through-hole package, 50mA maximum forward current, 50° viewing angle). Compatibility depends on the photodetector specifications and whether the 880nm wavelength is acceptable for the receiving circuit. The lower operating temperature maximum (85°C vs. 100°C) must be evaluated for applications requiring extended temperature operation.

Q: What is the significance of the wavelength difference between 850nm and 880nm?

A: Both wavelengths fall within the near-infrared spectrum. Photodetectors and sensors designed for 850nm operation typically exhibit peak sensitivity near that wavelength but maintain functional response across a range that includes 880nm. System-level testing is necessary to confirm performance equivalence in the specific application.

Q: Are there compliance or regulatory differences between these components?

A: Both the OP268FPS and XTHI30BF are ROHS3 compliant and REACH unaffected. No regulatory barriers exist to substitution from a compliance perspective.

Q: What is the impact of the forward voltage difference (1.8V vs. 1.6V)?

A: The XTHI30BF operates at a lower typical forward voltage, reducing power dissipation by approximately 11% at equivalent current levels. This may require minor adjustments to current-limiting resistor values in the drive circuit to maintain consistent light output.

Q: Is the XTHI30BF suitable for new designs?

A: Yes. The XTHI30BF is in active production status with substantial inventory availability. It is suitable for new designs requiring 880nm infrared emission with 50mA forward current capability and radial through-hole mounting.