LED Circuit Board Indicator 5520833 Equivalent & Substitute Parts

Part Overview

The Dialight 5520833 is a dual-level LED circuit board indicator featuring a 5mm round domed lens in yellow, designed for through-hole right-angle mounting applications. This component operates at 2.2V with a 20mA current rating and delivers 34mcd brightness at a 50° viewing angle. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design updates.

Substiute Parts

5520833

DialightIn Stock: 10975520833 Datasheet

Current PartRFQ

WP73EB/2YDA

KingbrightIn Stock: 730WP73EB/2YDA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5520833 is determined by the following critical parameters:

• Configuration: Dual-level (2 High) yellow LED arrangement
• Color & Wavelength: Yellow emission in the 585–590nm range
• Mounting: Through-hole right-angle orientation
• Lens Characteristics: Diffused, tinted round domed lens
• Electrical Compatibility: Voltage and current ratings within acceptable operating ranges for the host circuit
• Physical Form Factor: Lens diameter and overall package dimensions suitable for PCB integration

The Kingbright WP73EB/2YDA meets these substitution criteria as a dual-level yellow LED indicator with through-hole right-angle mounting, diffused tinted lens, and compatible electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The Kingbright WP73EB/2YDA serves as a functional equivalent for the obsolete Dialight 5520833 based on the following factors:

• Product Status: The Kingbright part is active and in production, ensuring long-term availability and supply chain continuity.
• Compliance: Both parts carry identical MSL ratings (1 – Unlimited) and REACH unaffected status, maintaining regulatory compliance.
• Electrical Parameters: The 0.1V voltage difference (2.1V vs. 2.2V) and 10mA current difference (30mA vs. 20mA) are within acceptable tolerances for typical indicator circuit designs. Circuit current-limiting resistors should be verified to accommodate the higher current rating of the substitute.
• Optical Characteristics: The 9mcd brightness difference and 5nm wavelength shift are negligible for visual indicator applications. The wider 60° viewing angle of the substitute provides enhanced visibility.
• Physical Compatibility: The 0.2mm reduction in lens diameter (4.80mm vs. 5mm) requires confirmation that existing PCB mounting holes accommodate the smaller form factor.

Frequently Asked Questions (FAQ)

Q: Can the Kingbright WP73EB/2YDA be used as a direct drop-in replacement for the Dialight 5520833?

A: The Kingbright part is functionally equivalent in configuration, color, mounting type, and lens characteristics. However, the 0.2mm difference in lens diameter must be verified against PCB mounting hole specifications to ensure mechanical fit. Additionally, the higher current rating (30mA vs. 20mA) requires confirmation that the circuit's current-limiting design accommodates this specification.

Q: What is the significance of the voltage rating difference (2.2V vs. 2.1V)?

A: The 0.1V difference is negligible for indicator applications and falls within standard circuit design tolerances. Most LED indicator circuits operate with voltage margins that accommodate this variation without performance degradation.

Q: How does the brightness difference (34mcd vs. 25mcd) affect circuit performance?

A: The 9mcd reduction represents approximately 26% lower brightness. For applications where indicator visibility is critical, this difference should be evaluated against specific illumination requirements. The wider 60° viewing angle of the substitute may partially compensate for the lower brightness in certain mounting orientations.

Q: Are there any compliance or certification concerns with substitution?

A: Both parts carry identical MSL ratings (1 – Unlimited), REACH unaffected status, and EAR99 ECCN classification. No compliance barriers exist for substitution in equivalent applications.

Q: What PCB design considerations apply when substituting this component?

A: Verify that existing PCB mounting holes accommodate the 4.80mm lens diameter. Confirm that circuit current-limiting resistors are appropriate for the 30mA maximum current rating of the substitute part. No changes to circuit topology or electrical design are required.