Dialight 5520233 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5520233 is a dual-level yellow LED circuit board indicator featuring a 5mm diffused, tinted lens with right-angle through-hole mounting. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part delivers 6.3mcd brightness at 10mA forward current with a 2.1V rating and 50° viewing angle, designed for standard PCB integration in indicator applications.

Substiute Parts

5520233

DialightIn Stock: 7295520233 Datasheet

Current PartRFQ

5520233F

DialightIn Stock: 15105520233F Datasheet

DirectRFQ

H278CYD

Bivar Inc.In Stock: 843H278CYD Datasheet

SimilarRFQ

WP73EB/2YDA

KingbrightIn Stock: 730WP73EB/2YDA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5520233 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Configuration: 2 High (dual-level) yellow LED
• Lens Style: Round with Domed Top
• Mounting Type: Through Hole, Right Angle
• Wavelength Range: 585nm–590nm (yellow spectrum)
• Voltage Rating: 2.0V–2.1V
• Moisture Sensitivity Level: MSL 1 (Unlimited)
• Compliance: ROHS3 Compliant, REACH Unaffected, ECCN EAR99

Substitution Categories:

Direct Substitute (Same Manufacturer): 5520233F (Dialight) — identical electrical and mechanical specifications with active product status and bulk packaging availability.

Functional Equivalents (Cross-Manufacturer): H278CYD (Bivar Inc.) and WP73EB/2YDA (Kingbright) — maintain dual-level yellow configuration, diffused lens, and through-hole mounting. These parts operate at higher current ratings (30mA vs. 10mA) and increased brightness (25mcd vs. 6.3mcd), suitable for applications where the original current specification is not a design constraint.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required): Select Dialight 5520233F. This part maintains identical electrical and mechanical specifications to the obsolete 5520233, including 10mA forward current, 6.3mcd brightness, and 50° viewing angle. The 5520233F is active in production with ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment and supply continuity.

For Functional Equivalence (Design Tolerance Required): Bivar H278CYD and Kingbright WP73EB/2YDA are suitable where circuit design accommodates higher forward current (30mA) and increased brightness output (25mcd). Both parts maintain dual-level yellow configuration, diffused lens construction, and MSL 1 rating. H278CYD operates at 2.0V with 45° viewing angle; WP73EB/2YDA operates at 2.1V with 60° viewing angle and 4.80mm lens diameter. Both are ROHS3 compliant and active in production.

Compliance Verification: All substitute parts carry ECCN EAR99 classification and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's regulatory profile. The 5520233F and WP73EB/2YDA maintain REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can 5520233F be used as a direct drop-in replacement for 5520233? A: Yes. The 5520233F is electrically and mechanically identical to the obsolete 5520233, with matching 10mA current, 2.1V voltage, 6.3mcd brightness, and 5mm lens size. No circuit modifications are required.

Q: What are the key differences between H278CYD and the original 5520233? A: H278CYD operates at 30mA forward current (vs. 10mA) and delivers 25mcd brightness (vs. 6.3mcd). Wavelength is 590nm (vs. 585nm) and viewing angle is 45° (vs. 50°). Voltage rating is 2.0V (vs. 2.1V). These differences require circuit design verification before substitution.

Q: Is WP73EB/2YDA compatible with the original PCB footprint? A: WP73EB/2YDA maintains through-hole, right-angle mounting and round domed-top lens style. However, the lens diameter is 4.80mm (vs. 5mm), which may require mechanical clearance verification on the PCB. Electrical specifications are compatible at 2.1V, 30mA operation.

Q: Are all substitute parts RoHS and REACH compliant? A: All substitute parts (5520233F, H278CYD, WP73EB/2YDA) are ROHS3 compliant. The 5520233F and WP73EB/2YDA maintain REACH Unaffected status. H278CYD REACH status is not specified in available documentation.

Q: What is the primary reason for substituting the original 5520233? A: The Dialight 5520233 is classified as obsolete. Substitution ensures supply continuity and access to active production inventory. The 5520233F provides identical performance; H278CYD and WP73EB/2YDA offer functional equivalence with higher brightness for applications where increased light output is acceptable.

Q: Can current-limiting resistor values remain unchanged when switching to H278CYD or WP73EB/2YDA? A: No. Both H278CYD and WP73EB/2YDA require 30mA forward current, compared to 10mA for the original part. Circuit resistor values must be recalculated to accommodate the higher current specification.