Dialight 5554401 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5554401 is a quad-wide yellow LED circuit board indicator featuring a 2.00mm diameter round domed lens, designed for through-hole right-angle mounting applications. This component delivers 2mcd brightness at 20mA forward current with a 2.2V voltage rating and 40° viewing angle. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

5554401

DialightIn Stock: 12095554401 Datasheet

Current PartRFQ

5554401F

DialightIn Stock: 10485554401F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5554401 is determined by strict equivalence across the following critical parameters:

• Electrical Performance: Voltage rating (2.2V), current rating (20mA), and millicandela output (2mcd) must be identical
• Optical Characteristics: Peak wavelength (583nm), color (Yellow x 4), and viewing angle (40°) must match
• Mechanical Compatibility: Configuration (4 Wide), lens style (Round with Domed Top), lens diameter (2.00mm), and mounting type (Through Hole, Right Angle) must be identical
• Environmental Ratings: Moisture sensitivity level (1 - Unlimited) must be maintained

The substitute part 5554401F meets all these criteria while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5554401F is the direct substitute for the obsolete 5554401. Both parts maintain identical electrical performance, optical characteristics, and mechanical compatibility across all critical parameters. The 5554401F offers two significant advantages: active product status ensuring continued availability and supply chain support, and ROHS3 compliance compared to the non-compliant status of the original part. For applications subject to RoHS regulations or requiring long-term component availability, the 5554401F is the appropriate selection. Both parts share identical environmental ratings, certifications, and export classifications.

Frequently Asked Questions (FAQ)

Q: Can the 5554401F be used as a direct replacement for the 5554401 in existing designs?

A: Yes. The 5554401F maintains identical electrical ratings (2.2V, 20mA), optical output (2mcd at 583nm), mechanical configuration (4 Wide, 2.00mm Round Domed lens), and mounting type (Through Hole, Right Angle). No circuit modifications are required.

Q: What is the difference between the 5554401 and 5554401F?

A: The primary differences are product status and compliance. The 5554401F is an active product with ROHS3 compliance, while the 5554401 is obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The 5554401 is packaged in standard format, while the 5554401F is supplied in Bulk packaging. Both maintain the same component specifications and performance characteristics.

Q: Does the lens type difference affect compatibility?

A: The 5554401F specifies a Clear lens type, while the 5554401 does not specify this parameter. This represents a clarification rather than a functional difference. Both parts deliver identical optical performance at 2mcd brightness and 40° viewing angle.

Q: Are both parts suitable for RoHS-regulated applications?

A: Only the 5554401F is ROHS3 compliant and suitable for RoHS-regulated applications. The 5554401 is RoHS non-compliant and should not be used in applications requiring RoHS compliance.

Q: What is the current availability status of these parts?

A: The 5554401 is obsolete with 1103 pieces in stock. The 5554401F is an active product with 941 pieces in stock, providing ongoing availability and supply chain support.