Dialight 5554301 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5554301 is a quad LED circuit board indicator featuring four green LEDs in a 2.00mm diameter package with right-angle through-hole mounting. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part delivers 1 millicandela brightness at 20mA operating current with a 2.4V forward voltage rating and 40° viewing angle.

Substiute Parts

5554301

DialightIn Stock: 9375554301 Datasheet

Current PartRFQ

5554301F

DialightIn Stock: 51605554301F Datasheet

DirectRFQ

AM2520EF/4SGD

KingbrightIn Stock: 2589AM2520EF/4SGD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Dialight 5554301 are classified based on electrical and mechanical compatibility within the following parameter constraints:

Direct Substitutes maintain identical or functionally equivalent specifications across all critical parameters: quad configuration, green color (565nm peak wavelength), 40° viewing angle, through-hole right-angle mounting, and round domed-top lens style.

Similar Substitutes share the same color, wavelength, viewing angle, and mounting type but may vary in lens diameter, voltage rating, current rating, or brightness rating within acceptable operational ranges for circuit board indicator applications.

The following parameters determine substitution eligibility:

• Color and wavelength (565nm green)
• Configuration (quad LED arrangement)
• Mounting type (through-hole, right-angle)
• Lens style (round with domed top)
• Viewing angle (40°)

Parameter Comparison

Engineering Selection Recommendations

Dialight 5554301F is the primary substitute for the obsolete 5554301. Both parts are manufactured by Dialight within the 555 series and maintain identical electrical and mechanical specifications. The 5554301F carries Active product status and ROHS3 compliance, addressing regulatory requirements that the original part does not meet. Packaging differs (Bulk versus standard), but electrical performance and form factor are equivalent.

Kingbright AM2520EF/4SGD serves as an alternative substitute when Dialight 5554301F availability is constrained. This part maintains the same green wavelength (565nm), 40° viewing angle, and through-hole right-angle mounting configuration. Differences include: 1.80mm lens diameter (versus 2.00mm), 2.2V voltage rating (versus 2.4V), 25mA current (versus 20mA), 10mcd brightness (versus 1mcd), and diffused tinted lens type (versus clear). The AM2520EF/4SGD also carries ROHS3 compliance and Active product status. Physical footprint variation due to lens diameter requires PCB layout verification before implementation.

Frequently Asked Questions (FAQ)

Q: Can the Dialight 5554301F directly replace the obsolete 5554301 without circuit modification?

A: Yes. The 5554301F maintains identical voltage rating (2.4V), current (20mA), brightness (1mcd), lens diameter (2.00mm), and mounting configuration. No circuit redesign is required for direct substitution.

Q: What are the key differences between the Dialight 5554301F and Kingbright AM2520EF/4SGD?

A: The primary differences are lens diameter (2.00mm versus 1.80mm), voltage rating (2.4V versus 2.2V), current rating (20mA versus 25mA), brightness (1mcd versus 10mcd), and lens type (clear versus diffused tinted). The AM2520EF/4SGD is brighter and operates at lower voltage but requires PCB layout verification due to physical size variation.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the Dialight 5554301F and Kingbright AM2520EF/4SGD carry ROHS3 compliance, whereas the original 5554301 is RoHS non-compliant.

Q: Does the 1.80mm lens diameter of the AM2520EF/4SGD affect PCB hole sizing?

A: Yes. The 0.20mm diameter reduction requires verification of existing PCB through-hole dimensions and mounting pad layout. Physical clearance around the component should be confirmed before board-level implementation.

Q: What is the difference between "4 Wide" and "4 High" configuration?

A: Configuration refers to the physical arrangement of the four LEDs within the package. "4 Wide" indicates a horizontal arrangement, while "4 High" indicates a vertical arrangement. This affects the component's footprint and mounting orientation on the PCB.

Q: Can the AM2520EF/4SGD be used in applications requiring exactly 1mcd brightness?

A: No. The AM2520EF/4SGD delivers 10mcd brightness, which is ten times brighter than the original specification. Applications with strict brightness requirements should use the Dialight 5554301F to maintain the 1mcd rating.