Dialight 5555301 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5555301 is a quad LED circuit board indicator featuring four green LEDs in a 2.00mm diameter through-hole package. This component is designed for applications requiring visual status indication with a 2.4V operating voltage and 20mA current rating. The 5555301 is classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The active substitute 5555301F provides functional continuity while offering improved compliance status.

Substiute Parts

5555301

DialightIn Stock: 7505555301 Datasheet

Current PartRFQ

5555301F

DialightIn Stock: 15545555301F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5555301 is determined by the following critical parameters:

• Electrical Compatibility: Voltage rating (2.4V) and current specification (20mA) must match or be compatible with circuit design requirements
• Optical Characteristics: Color (green), wavelength peak (565nm), and lens type (clear) ensure visual performance consistency
• Mechanical Compatibility: Configuration (4 wide), mounting type (through hole), and lens size (2.00mm diameter) must accommodate existing PCB layouts
• Functional Equivalence: Four-LED quad configuration must be maintained

The substitute part 5555301F meets all critical substitution criteria while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5555301F serves as the direct substitute for the obsolete 5555301. Both components share identical electrical specifications (2.4V, 20mA), optical properties (green, 565nm wavelength, clear lens), and mechanical configuration (4-wide through-hole, 2.00mm diameter).

The 5555301F is classified as active product status, ensuring ongoing availability and supply chain continuity. The substitute achieves ROHS3 compliance, addressing regulatory requirements that may apply to new designs or production runs. The 1mcd millicandela rating of the substitute is lower than the original 2mcd specification, while the 40° viewing angle is wider than the original 35°. These optical parameter variations remain within acceptable tolerances for circuit board indicator applications where the primary function is status visualization rather than high-intensity illumination.

Selection of the 5555301F is appropriate for applications where component availability, regulatory compliance, and long-term supply assurance are priorities.

Frequently Asked Questions (FAQ)

Q: Can the 5555301F directly replace the 5555301 in existing designs?

A: Yes. Both components share identical voltage (2.4V), current (20mA), color (green), wavelength (565nm), configuration (4-wide), mounting type (through hole), and lens specifications (clear, 2.00mm diameter). PCB layouts and circuit designs require no modification.

Q: What are the optical differences between these parts?

A: The 5555301F has a 1mcd millicandela rating compared to the 5555301's 2mcd rating, indicating lower peak luminous intensity. The 5555301F provides a wider 40° viewing angle versus the 5555301's 35° viewing angle. For circuit board indicator applications, these differences do not affect functional performance.

Q: Why is the 5555301 classified as obsolete?

A: The 5555301 has been superseded by the 5555301F. The manufacturer has transitioned production to the active substitute, which offers improved compliance characteristics and ongoing supply availability.

Q: Does the 5555301F meet current regulatory requirements?

A: Yes. The 5555301F is ROHS3 compliant, meeting current RoHS (Restriction of Hazardous Substances) regulations. The original 5555301 is RoHS non-compliant.

Q: Are there packaging differences between these parts?

A: The 5555301 is supplied in standard packaging, while the 5555301F is supplied in bulk packaging. Both maintain identical component specifications and through-hole mounting compatibility.

Q: What inventory status should be considered for procurement?

A: The 5555301 has 733 pieces in stock as new original inventory. The 5555301F has 1493 pieces in stock as new original inventory, providing greater availability for ongoing procurement needs.