CQX15 Infrared Emitter 940nm - Equivalent & Substitute Parts

Part Overview

The CQX15 is an infrared (IR) emitter operating at 940nm wavelength, designed for through-hole mounting applications requiring 100mA forward current capability. Manufactured by onsemi in a TO-46-2 metal can package, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for design continuity and procurement planning.

Substiute Parts

CQX15

onsemiIn Stock: 836CQX15 Datasheet

Current PartRFQ

OED-EL-1L2

Lumex Opto/Components Inc.In Stock: 135277OED-EL-1L2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CQX15 must satisfy the following electrical and mechanical criteria:

• Wavelength: 940nm (exact match required for IR spectral compatibility)
• Forward Current Rating: 100mA maximum (functional equivalence at rated current)
• Mounting Type: Through Hole (mechanical compatibility with existing PCB layouts)
• Moisture Sensitivity: MSL 1 or equivalent (storage and handling compatibility)

The OED-EL-1L2 from Lumex Opto/Components Inc. meets these core substitution parameters. While package form differs (radial vs. TO-46-2 metal can), both are through-hole mounted components with identical wavelength and current ratings, enabling functional substitution with mechanical redesign consideration.

Parameter Comparison

Engineering Selection Recommendations

The OED-EL-1L2 serves as a functional substitute for the obsolete CQX15 based on matched electrical specifications: identical 940nm wavelength, 100mA forward current rating, and MSL 1 moisture sensitivity classification. The OED-EL-1L2 is currently in active production status with high inventory availability (135,238 pcs), ensuring supply chain continuity.

Design considerations for substitution include:

• Forward Voltage Difference: OED-EL-1L2 operates at 1.2V typical versus CQX15 at 1.7V. Circuit current-limiting resistor values require recalculation.
• Viewing Angle: OED-EL-1L2 provides 60° versus CQX15 at 80°. Applications requiring wider beam dispersion may require optical redesign.
• Operating Temperature Range: OED-EL-1L2 rated to -25°C ~ 85°C versus CQX15 at -65°C ~ 125°C. Verify application temperature requirements.
• Package Geometry: Radial package differs from TO-46-2 metal can. PCB footprint and mechanical mounting require modification.

Both components maintain REACH Unaffected and EAR99 ECCN compliance status.

Frequently Asked Questions (FAQ)

Q: Can the OED-EL-1L2 directly replace the CQX15 without circuit modification?

A: No. While both components share 940nm wavelength and 100mA current rating, the OED-EL-1L2 forward voltage is 1.2V versus 1.7V for the CQX15. Current-limiting resistor values in the drive circuit must be recalculated. Additionally, package geometry differs (radial vs. TO-46-2), requiring PCB footprint modification.

Q: What is the impact of the 60° versus 80° viewing angle difference?

A: The OED-EL-1L2 provides a narrower beam angle (60°) compared to the CQX15 (80°). Applications requiring wide-angle IR emission may experience reduced coverage. Optical system redesign or alternative component selection may be necessary.

Q: Are there temperature range limitations with the OED-EL-1L2?

A: Yes. The OED-EL-1L2 operates within -25°C ~ 85°C, while the CQX15 supports -65°C ~ 125°C. Applications requiring extended low-temperature operation below -25°C or high-temperature operation above 85°C cannot use the OED-EL-1L2 as a substitute.

Q: Is the OED-EL-1L2 RoHS compliant?

A: Yes. The OED-EL-1L2 is ROHS3 compliant. Both components are REACH Unaffected and classified under ECCN EAR99.

Q: What is the radiant intensity specification for the CQX15?

A: The CQX15 radiant intensity (Ie) minimum value is not specified in available documentation. The OED-EL-1L2 provides 60mW/sr @ 100mA for reference comparison.