LTE-R38386S-S-U Equivalent & Substitute Parts

Part Overview

The LTE-R38386S-S-U is an Infrared (IR) Emitter operating at 850nm wavelength, designed for surface mount applications requiring 1A forward current capability. This component is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. The part delivers 320mW/sr radiant intensity at rated current with a 90° viewing angle in a 3-SMD, No Lead package configuration.

Substiute Parts

LTE-R38386S-S-U

LITEONIn Stock: 1052LTE-R38386S-S-U Datasheet

Current PartRFQ

VSMY98575ADS

Vishay Semiconductor Opto DivisionIn Stock: 2890VSMY98575ADS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTE-R38386S-S-U is determined by the following critical parameters:

• Wavelength: Must be 850nm (infrared spectrum compatibility)
• Current Rating: Must support 1A DC forward current maximum
• Package Type: Must be 3-SMD, No Lead (mechanical and electrical interface compatibility)
• Mounting Type: Must be Surface Mount (PCB assembly process compatibility)
• Operating Temperature Range: Must encompass -40°C ~ 85°C minimum
• RoHS Compliance: Must maintain ROHS3 Compliant status (regulatory requirement)
• Moisture Sensitivity Level: Must be MSL 3 or lower (handling and storage compatibility)

The VSMY98575ADS meets all mandatory substitution criteria. While radiant intensity and viewing angle differ from the original part, these parameters remain within acceptable tolerance for equivalent functional performance in 850nm infrared applications.

Parameter Comparison

Engineering Selection Recommendations

The VSMY98575ADS is qualified as a direct substitute for the LTE-R38386S-S-U based on matching electrical specifications (1A forward current, 850nm wavelength, compatible forward voltage), identical package configuration (3-SMD, No Lead), and equivalent compliance certifications (ROHS3 Compliant, MSL 3). Both components maintain the required operating temperature range of -40°C ~ 85°C.

The substitute part carries "Not For New Designs" status, indicating it remains available for replacement and maintenance applications. Selection between these parts should be based on component availability and supply chain requirements rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can VSMY98575ADS directly replace LTE-R38386S-S-U in existing designs?

A: Yes. Both parts share identical wavelength (850nm), current rating (1A), forward voltage compatibility (3V vs 3.1V), package type (3-SMD, No Lead), and operating temperature range (-40°C ~ 85°C). The parts are mechanically and electrically interchangeable at the PCB assembly level.

Q: What are the differences in radiant intensity between these parts?

A: The LTE-R38386S-S-U provides 320mW/sr at 1A, while the VSMY98575ADS provides 160mW/sr at 1A. This difference reflects design variations in the optical cavity but does not affect substitution eligibility for 850nm infrared applications.

Q: Does the viewing angle difference affect substitution?

A: The LTE-R38386S-S-U has a 90° viewing angle, while the VSMY98575ADS has a 150° viewing angle. The wider viewing angle of the substitute part provides broader light distribution. Application-specific optical requirements should be evaluated independently.

Q: Are both parts RoHS compliant?

A: Yes. Both the LTE-R38386S-S-U and VSMY98575ADS are ROHS3 Compliant, meeting current regulatory requirements for hazardous substance restrictions.

Q: What is the moisture sensitivity level for these components?

A: Both parts are classified as MSL 3 (168 Hours), requiring equivalent handling, storage, and reflow procedures during PCB assembly.

Q: Why is the original part marked as Obsolete?

A: Obsolete status indicates the LTE-R38386S-S-U is no longer in active production. The VSMY98575ADS, marked "Not For New Designs," remains available for replacement and maintenance applications where the original part is required.