OP245B Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP245B is an infrared (IR) emitter manufactured by TT Electronics/Optek Technology, designed for applications requiring 890nm wavelength emission at 50mA forward current. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. The OP245B operates across an industrial temperature range of -40°C to 100°C and is packaged in a radial through-hole configuration with side view orientation.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits operation within the specified electrical and mechanical parameter tolerances of alternative qualified emitters.

Substiute Parts

OP245B

TT Electronics/Optek TechnologyIn Stock: 1522OP245B Datasheet

Current PartRFQ

QEE122

onsemiIn Stock: 1774QEE122 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OP245B is determined by the following critical parameters:

• Wavelength Range: 880nm to 890nm (near-infrared spectrum compatibility)
• Maximum Forward Current: 50mA (electrical rating match)
• Forward Voltage: 1.7V to 1.8V (circuit compatibility tolerance)
• Viewing Angle: 40° to 50° (optical beam pattern compatibility)
• Mounting Configuration: Through Hole, Radial package, Side View orientation
• Operating Temperature: -40°C to 100°C minimum range
• Compliance Status: RoHS3 Compliant, REACH Unaffected

The QEE122 qualifies as a direct substitute based on alignment across all critical electrical and mechanical parameters within acceptable engineering tolerances for infrared emitter applications.

Parameter Comparison

Engineering Selection Recommendations

Both the OP245B and QEE122 maintain Active product status with full RoHS3 compliance and REACH unaffected regulatory standing. Selection between these components should be based on:

OP245B: Primary selection when 890nm wavelength specification is critical to system performance and TT Electronics/Optek Technology supply chain is available.

QEE122: Qualified substitute when onsemi supply availability is superior or when the 880nm wavelength and 50° viewing angle characteristics align with application requirements. The 0.1V forward voltage differential and 10nm wavelength variance remain within acceptable engineering tolerances for standard infrared detection and transmission applications.

Both components support identical maximum forward current (50mA), operating temperature range (-40°C to 100°C), and through-hole radial mounting configuration, ensuring mechanical and thermal compatibility in circuit board layouts.

Frequently Asked Questions (FAQ)

Q: Can QEE122 replace OP245B in existing circuit designs?

A: Yes. Both components share identical maximum forward current ratings (50mA), operating temperature ranges (-40°C to 100°C), and through-hole radial mounting configurations. The 10nm wavelength difference (880nm vs 890nm) and 0.1V forward voltage variance (1.7V vs 1.8V) fall within acceptable tolerances for infrared emitter applications. Circuit validation is recommended for wavelength-sensitive detector systems.

Q: What is the significance of the viewing angle difference?

A: The QEE122 provides a 50° viewing angle compared to the OP245B's 40° angle. This results in a wider optical beam pattern. Applications requiring narrow beam concentration should verify that the broader emission angle does not impact system performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both OP245B and QEE122 are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the radiant intensity specification for QEE122?

A: The QEE122 specifies 4mW/sr radiant intensity at 100mA forward current. The OP245B radiant intensity minimum value is not provided in the available specifications.

Q: Are there any packaging differences between these components?

A: Both components use radial through-hole packages with side view orientation. Mechanical compatibility is confirmed for standard PCB mounting applications.