LTL911SEKSA Equivalent & Substitute Parts

Part Overview

The LTL911SEKSA is a red 628nm LED indication component manufactured by Lite-On Inc., configured as a through-hole 4-DIP package with a 3.00mm domed lens. This part is classified as obsolete, making identification of compatible substitutes essential for ongoing production and maintenance applications. The component operates at 2.5V forward voltage with a 70mA test current and provides 90° viewing angle in a compact 7.62mm × 7.62mm footprint.

Substiute Parts

LTL911SEKSA

Lite-On Inc.In Stock: 803LTL911SEKSA Datasheet

Current PartRFQ

OVFSRAC8

TT Electronics/Optek TechnologyIn Stock: 8248OVFSRAC8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTL911SEKSA is determined by strict alignment of the following critical parameters:

• Color and Wavelength: Red 628nm dominant wavelength
• Electrical Characteristics: 2.5V forward voltage and 70mA test current
• Optical Configuration: 3.00mm diameter domed lens with clear transparency
• Package Specification: 4-DIP (0.200", 5.08mm) through-hole configuration
• Physical Dimensions: Footprint and height compatibility within specified tolerances
• Moisture Sensitivity: MSL 1 rating

The OVFSRAC8 manufactured by TT Electronics/Optek Technology meets all substitution criteria. This part maintains identical electrical specifications, optical wavelength, package geometry, and mounting characteristics. The substitute is currently in active production status with full RoHS3 and REACH compliance documentation.

Parameter Comparison

Engineering Selection Recommendations

The OVFSRAC8 is the qualified substitute for the obsolete LTL911SEKSA. Selection is based on the following engineering factors:

Product Status: The LTL911SEKSA is obsolete, creating supply chain risk. The OVFSRAC8 is in active production with documented inventory availability.

Electrical and Optical Compatibility: Both parts operate at identical 2.5V forward voltage and 70mA test current with matching 628nm dominant wavelength. The 4-DIP through-hole package, 3.00mm domed lens, and MSL 1 rating are identical across both components.

Compliance Documentation: The OVFSRAC8 carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Physical Dimensions: Footprint dimensions are within 0.02mm tolerance (7.62mm vs 7.60mm), and height variation is 0.05mm (6.10mm vs 6.15mm), both within acceptable PCB assembly tolerances for through-hole components.

Optical Performance: The OVFSRAC8 provides 100° viewing angle compared to the 90° specification of the main part, representing an improvement in light distribution characteristics.

Frequently Asked Questions (FAQ)

Q: Can the OVFSRAC8 be used as a direct replacement for the LTL911SEKSA in existing designs?

A: Yes. Both components share identical electrical specifications (2.5V forward voltage, 70mA test current), optical wavelength (628nm), package configuration (4-DIP through-hole), and physical footprint within manufacturing tolerances. No circuit modifications are required.

Q: What is the significance of the viewing angle difference (90° vs 100°)?

A: The OVFSRAC8 provides a wider viewing angle, which expands the angular range over which the LED indication is visible. This is a functional improvement and does not create compatibility issues in applications designed for the 90° specification.

Q: Are there any compliance differences between the two parts?

A: The OVFSRAC8 includes documented ROHS3 compliance and REACH unaffected status. The LTL911SEKSA does not specify these certifications. For applications requiring regulatory compliance documentation, the OVFSRAC8 provides complete certification records.

Q: What are the physical dimension tolerances for PCB assembly compatibility?

A: The footprint difference is 0.02mm (7.62mm vs 7.60mm) and height difference is 0.05mm (6.10mm vs 6.15mm). Both variations are within standard PCB assembly tolerances for through-hole components and do not affect mounting or soldering processes.

Q: Is the OVFSRAC8 available in the same packaging format?

A: The OVFSRAC8 is supplied in tube packaging, while the LTL911SEKSA packaging format is not specified. Both components use the identical 4-DIP (0.200", 5.08mm) package case. Tube packaging is standard for through-hole LED components and is compatible with automated assembly equipment.