Dialight 5554403 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5554403 is a quad-wide yellow LED circuit board indicator designed for 5V applications. This component features a 2.00mm diameter clear lens with domed top, mounted through-hole in a right-angle configuration. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

5554403

DialightIn Stock: 12375554403 Datasheet

Current PartRFQ

5554403F

DialightIn Stock: 14105554403F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Dialight 5554403F qualifies as a direct substitute based on matching electrical and mechanical parameters. Substitution compatibility is determined by the following criteria:

• Color specification: Yellow (x 4)
• Configuration: 4 Wide
• Wavelength - Peak: 583nm
• Current rating: 4.7mA
• Millicandela Rating: 2.1mcd
• Viewing Angle: 40°
• Voltage Rating: 5V
• Mounting Type: Through Hole, Right Angle
• Lens Type: Clear
• Lens Size: 2.00mm Dia

The 5554403F maintains identical electrical performance and mechanical form factor, enabling direct replacement in existing circuit board designs.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5554403F is the designated substitute for the obsolete 5554403. The 5554403F maintains full electrical and mechanical compatibility while offering improved regulatory compliance through ROHS3 certification. Selection of the 5554403F is appropriate for new designs and replacement applications where RoHS compliance is required. Both parts share identical performance characteristics across all critical parameters including wavelength, current, brightness, and viewing angle.

Frequently Asked Questions (FAQ)

Q: Can the 5554403F directly replace the 5554403 in existing designs? A: Yes. The 5554403F provides direct substitution with identical electrical specifications (5V, 4.7mA, 583nm wavelength, 2.1mcd) and mechanical form factor (2.00mm diameter, through-hole right-angle mounting, 4-wide configuration).

Q: What is the primary difference between these parts? A: The 5554403F is the active production variant with ROHS3 compliance, while the 5554403 is obsolete and RoHS non-compliant. Electrical and optical performance are identical.

Q: Are there packaging differences between the two parts? A: The 5554403 uses standard packaging, while the 5554403F is supplied in bulk packaging. Both are suitable for through-hole PCB assembly.

Q: Does the RoHS compliance difference affect circuit board compatibility? A: No. RoHS compliance relates to material composition and manufacturing processes, not electrical or mechanical interface characteristics. Both parts function identically in circuit applications.

Q: What parameters must remain constant for substitution? A: Voltage rating (5V), current (4.7mA), wavelength (583nm), configuration (4 wide), lens size (2.00mm), mounting type (through-hole right-angle), and viewing angle (40°) must all match for direct substitution.