LTL2R3KFK Equivalent & Substitute Parts

Part Overview

The LTL2R3KFK is an orange LED indicator from Lite-On Inc., designed for through-hole applications with a 5mm T-1 3/4 lens format. This active product delivers 700mcd at 605nm dominant wavelength with a 2.05V forward voltage and 30° viewing angle. The component is ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts may be required due to inventory constraints, supply chain discontinuities, or application-specific performance requirements while maintaining electrical and mechanical compatibility within the through-hole LED category.

Substiute Parts

LTL2R3KFK

Lite-On Inc.In Stock: 1072LTL2R3KFK Datasheet

Current PartRFQ

151051YS04000

Würth ElektronikIn Stock: 2137151051YS04000 Datasheet

MFR RecommendedRFQ

OVLLY8C7

TT Electronics/Optek TechnologyIn Stock: 9885OVLLY8C7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the LTL2R3KFK is based on the following critical parameters that define functional equivalence within the through-hole LED category:

Mandatory Compatibility Parameters:

• Mounting Type: Through Hole (radial configuration)
• Lens Size: 5mm form factor
• Voltage - Forward (Vf): 2.0V to 2.05V range
• Current - Test: 20mA standard
• Package / Case: Radial
• RoHS Status: ROHS3 Compliant

Performance Parameters (Allowable Variance):

• Color: Substitutes may differ in color (orange to yellow spectrum)
• Wavelength - Dominant: 589nm to 611nm range acceptable
• Millicandela Rating: 450mcd to 980mcd range acceptable
• Viewing Angle: 30° to 100° range acceptable
• Lens Transparency: Clear or Diffused acceptable
• Lens Style: Round with Domed Top or Round with Flat Top acceptable
• Height (Max): 6.80mm to 8.95mm range acceptable

The provided substitute parts meet all mandatory compatibility parameters while operating within acceptable performance variance for general indication applications.

Parameter Comparison

Engineering Selection Recommendations

All three components maintain active product status and ROHS3 compliance, meeting regulatory requirements for current applications.

LTL2R3KFK (Primary): Orange 605nm LED with 700mcd output and 30° viewing angle. Recommended for applications requiring orange indication with moderate brightness and narrow viewing angle specification.

151051YS04000 (Würth Elektronik): Yellow 590nm LED with 450mcd output and 40° viewing angle. Diffused lens provides light scattering. Suitable for applications where yellow indication is acceptable and lower brightness is tolerable. Height tolerance is 8.95mm maximum.

OVLLY8C7 (TT Electronics/Optek Technology): Yellow 589nm LED with 980mcd output and 100° viewing angle. Clear lens with flat top design. Suitable for applications requiring high brightness and wide viewing angle distribution. Compact height at 6.80mm maximum.

Component selection depends on application-specific requirements for color, brightness, viewing angle, and physical height constraints within the through-hole LED category.

Frequently Asked Questions (FAQ)

Q: Can OVLLY8C7 replace LTL2R3KFK in any application? A: OVLLY8C7 is mechanically and electrically compatible as a through-hole radial LED. However, color differs (yellow vs. orange) and viewing angle is significantly wider (100° vs. 30°). Substitution is valid only if the application accepts yellow indication and wide-angle light distribution.

Q: What is the primary difference between 151051YS04000 and OVLLY8C7? A: Both are yellow LEDs with similar forward voltage (2V). Key differences: 151051YS04000 has diffused lens with 450mcd and 40° viewing angle; OVLLY8C7 has clear lens with 980mcd and 100° viewing angle. Selection depends on brightness and light distribution requirements.

Q: Are all three parts suitable for PCB through-hole mounting? A: Yes. All three components feature radial package configuration with through-hole mounting type, compatible with standard PCB assembly processes.

Q: Does lens transparency affect substitution compatibility? A: Lens transparency (clear vs. diffused) affects light distribution characteristics. Clear lenses concentrate light in a narrower beam; diffused lenses scatter light more broadly. Selection depends on application visibility requirements and viewing angle specifications.

Q: What is the height constraint consideration? A: LTL2R3KFK maximum height is 8.70mm. OVLLY8C7 is more compact at 6.80mm; 151051YS04000 is slightly taller at 8.95mm. Height differences may affect PCB layout and enclosure clearance. Verify mechanical fit before substitution.

Q: Are all parts ROHS3 compliant? A: Yes. LTL2R3KFK, 151051YS04000, and OVLLY8C7 are all ROHS3 compliant, meeting environmental and regulatory requirements for current applications.