LTE-2871C Equivalent & Substitute Parts

Part Overview

The LTE-2871C is an Infrared (IR) Emitter operating at 940nm wavelength, manufactured by LITEON. This through-hole radial component is designed for applications requiring near-infrared emission in the 940nm spectrum. The part is Active status and ROHS3 compliant, with 1144 units currently in stock. Alternative components may be required due to inventory constraints, application-specific parameter requirements, or design optimization needs.

Substiute Parts

LTE-2871C

LITEONIn Stock: 1234LTE-2871C Datasheet

Current PartRFQ

QED123

onsemiIn Stock: 4736QED123 Datasheet

MFR RecommendedRFQ

QED123A4R0

onsemiIn Stock: 7702QED123A4R0 Datasheet

MFR RecommendedRFQ

QED234

onsemiIn Stock: 17738QED234 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTE-2871C are identified based on the following allowable parameter ranges:

Wavelength Compatibility: The primary substitutes operate at 880nm, 890nm, or 940nm. The 940nm wavelength substitutes (QED234) maintain exact spectral alignment with the main part. The 880nm and 890nm variants (QED123, QED123A4R0) represent near-infrared alternatives within the same functional spectrum.

Current Rating: The LTE-2871C operates at a maximum of 60mA. All substitute parts are rated for 100mA maximum forward current, providing higher current capacity while remaining compatible with applications designed for the original 60mA specification.

Forward Voltage: The main part specifies 1.2V typical forward voltage. Substitute parts operate at 1.6V to 1.7V, representing acceptable variance within infrared emitter design parameters.

Radiant Intensity: The LTE-2871C delivers 6.02mW/sr @ 20mA. Substitute parts provide 27mW/sr to 50mW/sr @ 100mA, indicating higher optical output capability.

Viewing Angle: The main part features a 16° viewing angle. Substitutes range from 16° to 40°, with wider angles providing expanded emission patterns.

Mounting and Package: All substitutes maintain through-hole radial mounting configuration with 5mm diameter packages, ensuring mechanical compatibility.

Compliance: All substitute parts are ROHS3 compliant and carry Active product status.

Parameter Comparison

Engineering Selection Recommendations

QED234 (Primary Substitute): This part maintains the 940nm wavelength specification of the LTE-2871C, ensuring spectral alignment for applications requiring exact wavelength matching. QED234 is Active status, ROHS3 compliant, and available in high inventory (17710 units). The 100mA current rating and 1.6V forward voltage represent acceptable parameter variance. The 40° viewing angle provides wider emission coverage compared to the original 16° specification.

QED123A4R0 (Secondary Substitute): This onsemi component operates at 890nm wavelength with 100mA maximum current and 1.7V forward voltage. It maintains the 16° viewing angle of the LTE-2871C and is supplied in Cut Tape packaging. Product status is Active with ROHS3 compliance. Inventory availability is 7608 units.

QED123 (Alternative Substitute): Operating at 880nm with 100mA current rating and 1.7V forward voltage, this part provides an alternative near-infrared option. It is Active status, ROHS3 compliant, and available in Bulk packaging with 4721 units in stock. The 18° viewing angle represents minimal deviation from the original specification.

All substitute parts maintain through-hole radial mounting configuration and are suitable for direct mechanical replacement in PCB applications designed for the LTE-2871C.

Frequently Asked Questions (FAQ)

Q: Can QED234 directly replace the LTE-2871C? A: QED234 maintains the 940nm wavelength specification and through-hole radial mounting of the LTE-2871C. The 100mA current rating is higher than the original 60mA specification, and the 1.6V forward voltage differs from the 1.2V typical value. Applications must accommodate these parameter differences. The 40° viewing angle is wider than the original 16°.

Q: What is the difference between QED123 and QED123A4R0? A: Both parts operate at similar wavelengths (880nm vs 890nm) with identical 100mA current ratings and 1.7V forward voltage. The primary difference is packaging: QED123 is supplied in Bulk format, while QED123A4R0 is supplied in Cut Tape (CT). QED123A4R0 maintains the 16° viewing angle of the LTE-2871C, whereas QED123 specifies 18°.

Q: Are all substitute parts ROHS3 compliant? A: Yes. QED123, QED123A4R0, and QED234 are all ROHS3 compliant and carry Active product status, matching the compliance profile of the LTE-2871C.

Q: What is the impact of higher forward voltage in substitute parts? A: The LTE-2871C specifies 1.2V typical forward voltage, while substitutes operate at 1.6V to 1.7V. Circuit designs must account for this voltage difference in current-limiting resistor calculations and power supply specifications.

Q: Does viewing angle affect substitution compatibility? A: Viewing angle determines the emission pattern width. The LTE-2871C specifies 16°, while QED234 provides 40°. Applications requiring narrow-beam emission should select QED123A4R0 (16°) or QED123 (18°) to maintain similar optical characteristics.

Q: What are the packaging options for these substitutes? A: QED123 and QED234 are available in Bulk packaging. QED123A4R0 is supplied in Cut Tape (CT) format. All maintain through-hole radial mounting with 5mm diameter packages.