Dialight 5520921F LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5520921F is an active LED circuit board indicator featuring a dual-level configuration with integrated green and red LEDs. This 5mm T-1 3/4 through-hole component with right-angle mounting provides visual status indication in electronic assemblies. The part is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1), making it suitable for standard industrial and commercial applications. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

5520921F

DialightIn Stock: 8985520921F Datasheet

Current PartRFQ

5520912F

DialightIn Stock: 17545520912F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5520921F is determined by strict equivalence across the following critical parameters:

Configuration and Color: Both parts must maintain the 2 High dual-LED configuration with identical color pairing (Green x1, Red x1).

Electrical Specifications: Current ratings (7mA Green, 7mA Red) and voltage ratings (1.8V Green, 1.7V Red) must be identical to ensure circuit compatibility without redesign.

Optical Characteristics: Peak wavelengths (565nm Green, 635nm Red), millicandela ratings (1.8mcd Green, 2.3mcd Red), and viewing angle (50°) must match to preserve visual indication performance.

Physical Form Factor: Lens size (5mm, T-1 3/4), lens type (Diffused, Tinted), lens style (Round with Domed Top), and mounting type (Through Hole, Right Angle) must be identical for mechanical and electrical compatibility.

Compliance and Status: Both parts must maintain active product status and equivalent compliance certifications (ROHS3, REACH Unaffected, MSL 1).

The identified substitute part 5520912F meets all these criteria and is classified as a direct equivalent within the Dialight 552 series.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5520912F (part number base 5520912) is a direct equivalent substitute for the 5520921F. Both parts are active products within the Dialight 552 series and maintain identical electrical, optical, and mechanical specifications. Selection between these parts is based on availability and procurement requirements rather than technical differentiation.

Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and commercial applications. The MSL 1 rating (unlimited moisture sensitivity) applies to both parts, indicating no special storage or handling requirements during assembly.

For applications requiring the 5mm T-1 3/4 through-hole right-angle LED circuit board indicator with dual green/red configuration, either part number is functionally and mechanically interchangeable without circuit modification or mechanical redesign.

Frequently Asked Questions (FAQ)

Q: Can the 5520912F be used as a direct replacement for the 5520921F in existing designs?

A: Yes. The 5520912F is a direct equivalent substitute. All electrical specifications (current, voltage), optical characteristics (wavelength, brightness, viewing angle), physical form factor (lens size, mounting type), and compliance certifications are identical. No circuit or mechanical modifications are required.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in configuration (2 High dual-LED), color pairing (Green x1, Red x1), current ratings (7mA each), voltage ratings (1.8V Green, 1.7V Red), wavelengths (565nm Green, 635nm Red), millicandela ratings (1.8mcd Green, 2.3mcd Red), viewing angle (50°), lens specifications (5mm T-1 3/4, Diffused Tinted, Round Domed Top), mounting type (Through Hole Right Angle), and compliance status (ROHS3, REACH Unaffected, MSL 1).

Q: Are there any differences in packaging or inventory between these parts?

A: Both parts are supplied in bulk packaging. The 5520921F has 799 pieces in stock, while the 5520912F has 1742 pieces in stock. Packaging format and handling are identical.

Q: Do these parts require special storage or handling?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard component storage and handling practices apply.

Q: What is the base product number relationship between these parts?

A: The 5520921F has base product number 5520921, while the 5520912F has base product number 5520912. Both are variants within the Dialight 552 series and share identical electrical and optical specifications.