LTL2P3KYKP Equivalent & Substitute Parts

Part Overview

The LTL2P3KYKP is an amber LED indicator manufactured by Lite-On Inc., designed for through-hole applications in discrete indication circuits. This component features a 5mm T-1 3/4 lens with a dominant wavelength of 592nm and a forward voltage of 2.05V at 20mA test current. The part is currently classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and maintenance applications.

Substiute Parts

LTL2P3KYKP

Lite-On Inc.In Stock: 1091LTL2P3KYKP Datasheet

Current PartRFQ

LTL2R3KYK

Lite-On Inc.In Stock: 941LTL2R3KYK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTL2P3KYKP is determined by strict equivalence across the following critical parameters:

Color and wavelength characteristics must remain constant at amber with dominant wavelength of 592nm and peak wavelength of 595nm to maintain circuit indication consistency.

Electrical specifications must match: forward voltage of 2.05V and test current of 20mA ensure compatibility with existing driver circuits without modification.

Physical form factor must be identical: 5mm T-1 3/4 lens size, round domed top style, clear lens transparency, and through-hole radial mounting ensure mechanical and electrical compatibility with existing PCB layouts.

The LTL2R3KYK qualifies as a direct substitute based on these parameters. While the millicandela rating differs (700mcd versus 1000mcd) and viewing angle is wider (30° versus 22°), these represent performance enhancements rather than incompatibilities. The substitute maintains all critical electrical, optical, and mechanical specifications required for functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The LTL2R3KYK is the recommended substitute for the obsolete LTL2P3KYKP. This substitution is supported by the following engineering factors:

The substitute maintains active product status, ensuring ongoing availability and supply chain reliability for current and future production requirements.

ROHS3 compliance of the LTL2R3KYK aligns with modern environmental and regulatory standards, whereas the main part's compliance status is not specified.

Electrical and optical specifications are fully equivalent across all critical parameters: identical forward voltage, test current, dominant and peak wavelengths, and physical form factor ensure direct functional replacement without circuit modification.

The lower millicandela rating (700mcd versus 1000mcd) and wider viewing angle (30° versus 22°) of the substitute represent performance characteristics suitable for standard indication applications. Selection should be based on specific application brightness and viewing angle requirements.

Frequently Asked Questions (FAQ)

Q: Can the LTL2R3KYK be used as a direct replacement for the LTL2P3KYKP without circuit modification?

A: Yes. The substitute maintains identical forward voltage (2.05V), test current (20mA), wavelength characteristics (592nm dominant, 595nm peak), and physical form factor (5mm T-1 3/4 through-hole radial). No circuit redesign is required.

Q: What are the differences between these two parts?

A: The LTL2R3KYK has a lower millicandela rating (700mcd versus 1000mcd) and a wider viewing angle (30° versus 22°). The substitute is also ROHS3 compliant and maintains active product status, whereas the main part is obsolete.

Q: Are the physical dimensions identical?

A: Yes. Both parts feature identical lens size (5mm T-1 3/4), lens style (round with domed top), and maximum height (8.70mm). Through-hole radial mounting is identical, ensuring PCB compatibility.

Q: Does the lower brightness of the substitute affect compatibility?

A: The 700mcd rating of the LTL2R3KYK is suitable for standard indication applications. Application-specific brightness requirements should be evaluated against the substitute's specifications. The wider 30° viewing angle may provide improved visibility in certain mounting orientations.

Q: What is the moisture sensitivity level for both parts?

A: Both the LTL2P3KYKP and LTL2R3KYK have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.