L59UD-Y24-W LED Panel Indicator Yellow 24V Equivalent & Substitute Parts

Part Overview

The L59UD-Y24-W is a yellow LED panel indicator manufactured by Visual Communications Company (VCC) designed for 24V DC applications with 20mA current consumption. This component features a diffused yellow lens with 60° viewing angle and wire lead termination (6" length). The part is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new procurement requirements.

Substiute Parts

L59UD-Y24-W

Visual Communications Company - VCCIn Stock: 710L59UD-Y24-W Datasheet

Current PartRFQ

L59D-Y24-W

Visual Communications Company - VCCIn Stock: 1464L59D-Y24-W Datasheet

Parametric EquivalentRFQ

Q6P3BXXY24E

APEM Inc.In Stock: 827Q6P3BXXY24E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L59UD-Y24-W are identified based on strict electrical and mechanical parameter matching within acceptable tolerances for LED panel indicator applications. The substitution logic is based on the following critical parameters:

Electrical Compatibility Requirements:

• Voltage rating: 24V DC (exact match required)
• Current consumption: 20mA (exact match required)
• Lamp color and lens color: Yellow (exact match required)
• Lens transparency: Diffused (exact match required)

Mechanical Compatibility Requirements:

• Panel cutout shape: Round (exact match required)
• Lens style: Round with Domed Top (exact match required)
• Termination style: Wire Leads (exact match required)

Regulatory & Environmental Requirements:

• RoHS3 Compliance (required)
• Moisture Sensitivity Level 1 (required)
• REACH Unaffected status (required)

Substitute parts are classified into two categories: Parametric Equivalent (all parameters match within specification) and Similar (parameters match with noted deviations in specific dimensions or performance characteristics).

Parameter Comparison

Engineering Selection Recommendations

L59D-Y24-W (Parametric Equivalent - Recommended Primary Substitute)

The L59D-Y24-W is classified as a parametric equivalent to the L59UD-Y24-W. All electrical parameters (24V, 20mA), mechanical dimensions (panel cutout 0.25", lens size 5.08mm), and optical characteristics (yellow diffused, 60° viewing angle, 20mcd) are identical. Both components maintain ROHS3 compliance and MSL 1 rating. The L59D-Y24-W carries a "Not For New Designs" status but remains suitable for replacement and maintenance applications. Higher inventory availability (1360 units) supports procurement reliability.

Q6P3BXXY24E (Similar - Conditional Substitute)

The Q6P3BXXY24E from APEM Inc. maintains electrical compatibility (24V, 20mA) and core optical properties (yellow diffused lens, round domed top). However, this component exhibits the following parameter deviations:

• Panel cutout dimension: 0.24" (6.10mm) versus 0.25" (6.35mm) specification
• Lens size: 3mm T-1 versus 5.08mm diameter
• Millicandela rating: 30mcd versus 20mcd
• Viewing angle: 100° versus 60°
• Wire lead length: 7.87" (200mm) versus 6" (152.40mm)
• Ingress protection: IP67 rating (additional feature)

The Q6P3BXXY24E is classified as Active status and maintains full ROHS3 and REACH compliance. Selection of this component requires mechanical panel design verification due to cutout dimension and lens size differences. The increased brightness (30mcd) and wider viewing angle (100°) may alter visual indication characteristics in the application.

Frequently Asked Questions (FAQ)

Q: Can L59D-Y24-W directly replace L59UD-Y24-W without any modifications?

A: Yes. The L59D-Y24-W is a parametric equivalent with identical electrical ratings (24V, 20mA), mechanical dimensions (0.25" panel cutout, 5.08mm lens), and optical specifications (yellow diffused, 60° viewing angle, 20mcd). No circuit or panel modifications are required.

Q: What are the key differences between L59D-Y24-W and Q6P3BXXY24E?

A: Both maintain 24V, 20mA electrical compatibility and yellow diffused lens characteristics. Differences include: panel cutout size (0.25" vs 0.24"), lens diameter (5.08mm vs 3mm), brightness (20mcd vs 30mcd), viewing angle (60° vs 100°), wire lead length (6" vs 7.87"), and ingress protection (none vs IP67). The Q6P3BXXY24E requires mechanical panel design verification.

Q: Is the Q6P3BXXY24E suitable for applications requiring the original 60° viewing angle?

A: No. The Q6P3BXXY24E provides a 100° viewing angle, which differs from the L59UD-Y24-W specification of 60°. This parameter change may affect visual indication performance in applications with specific viewing angle requirements.

Q: What is the impact of the 30mcd brightness rating on Q6P3BXXY24E compared to the 20mcd of the original part?

A: The Q6P3BXXY24E provides 50% higher brightness output. In applications where indicator visibility is critical, this increased luminous intensity may be beneficial. However, in applications with brightness-sensitive design parameters, this difference requires evaluation.

Q: Can the Q6P3BXXY24E be installed in the same panel cutout as the L59UD-Y24-W?

A: Panel cutout compatibility requires verification. The Q6P3BXXY24E specifies a 0.24" (6.10mm) cutout versus the L59UD-Y24-W specification of 0.25" (6.35mm). Additionally, the lens diameter differs (3mm T-1 vs 5.08mm). Mechanical fit assessment is required before installation.

Q: Are all three parts RoHS3 compliant and REACH unaffected?

A: Yes. L59UD-Y24-W, L59D-Y24-W, and Q6P3BXXY24E all maintain ROHS3 compliance and REACH Unaffected status. All components have Moisture Sensitivity Level 1 (Unlimited).

Q: What is the significance of the "Not For New Designs" status of L59D-Y24-W?

A: This designation indicates the component is suitable for replacement, maintenance, and legacy system support but is not recommended for new product development. For new designs, the Q6P3BXXY24E (Active status) may be considered, subject to parameter compatibility verification.

Q: Which substitute part should be selected for immediate replacement applications?

A: L59D-Y24-W is the recommended choice for direct replacement due to parametric equivalence. No design modifications are required. Q6P3BXXY24E requires mechanical and optical parameter verification before implementation.