LTL2R3KFKS Equivalent & Substitute Parts

Part Overview

The LTL2R3KFKS is an orange LED indicator from Lite-On Inc., designed for through-hole mounting applications requiring discrete indication at 605nm wavelength. This Active product delivers 700mcd brightness with a 30° viewing angle and operates at 2.05V forward voltage. Substitute parts may be required due to inventory constraints, design revisions, or regional availability considerations while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

LTL2R3KFKS

Lite-On Inc.In Stock: 1012LTL2R3KFKS 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

Substitute parts for the LTL2R3KFKS are identified based on the following critical parameters: mounting type (through hole), lens size (5mm T-1 3/4 form factor), forward voltage range (2.0V–2.05V), test current (20mA), and RoHS3 compliance. The provided substitute list includes parts with different dominant wavelengths (yellow at 590nm and 589nm versus orange at 605nm) and varying brightness levels (450mcd to 980mcd). These substitutes maintain electrical compatibility through matching voltage and current specifications but differ in optical characteristics including color, brightness, and viewing angle. Selection depends on application requirements for wavelength and brightness tolerance.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment for current designs. The LTL2R3KFKS and OVLLY8C7 share identical lens size specifications (5mm, T-1 3/4), while the 151051YS04000 uses a slightly smaller 4.90mm diameter lens. Forward voltage compatibility exists across all parts at 2.0V–2.05V with 20mA test current. Selection between substitutes depends on application tolerance for wavelength shift (orange to yellow), brightness variation (450mcd to 980mcd), and viewing angle requirements (30° to 100°). Physical height differences (6.80mm to 8.95mm) must be verified against PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can OVLLY8C7 or 151051YS04000 directly replace LTL2R3KFKS in all applications?

A: Direct replacement depends on application requirements. Both substitutes maintain electrical compatibility (2.0V forward voltage, 20mA test current) and through-hole mounting. However, wavelength differs (yellow versus orange), and brightness varies significantly (450mcd to 980mcd versus 700mcd). Verify that your application tolerates color and brightness changes.

Q: What are the physical mounting differences?

A: LTL2R3KFKS and OVLLY8C7 use 5mm T-1 3/4 lens form factors with maximum heights of 8.70mm and 6.80mm respectively. The 151051YS04000 uses a 4.90mm diameter lens with 8.95mm maximum height. Confirm PCB hole spacing and clearance accommodate these dimensional variations.

Q: Are all parts RoHS3 compliant?

A: Yes. LTL2R3KFKS, 151051YS04000, and OVLLY8C7 are all ROHS3 compliant and maintain Active product status, ensuring regulatory compliance for current manufacturing.

Q: How do viewing angles affect substitution?

A: LTL2R3KFKS provides 30° viewing angle, 151051YS04000 provides 40°, and OVLLY8C7 provides 100°. Wider viewing angles increase light visibility across a broader spatial range. Select based on your application's directional visibility requirements.

Q: What brightness differences should I consider?

A: LTL2R3KFKS delivers 700mcd, 151051YS04000 delivers 450mcd (36% lower), and OVLLY8C7 delivers 980mcd (40% higher). Brightness perception also depends on lens transparency (clear versus diffused) and color. Evaluate visibility requirements under your specific lighting conditions.