Dialight 5552401 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5552401 is a 2mm yellow LED circuit board indicator designed for through-hole, right-angle mounting applications. This component operates at 2.2V with a 20mA current rating and delivers 2 millicandela of luminous intensity with a 40° viewing angle. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing production support and legacy system maintenance.

Substiute Parts

5552401

DialightIn Stock: 8735552401 Datasheet

Current PartRFQ

5552401F

DialightIn Stock: 23485552401F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Dialight 5552401 is determined by strict equivalence across the following critical parameters:

• Electrical Characteristics: Voltage rating (2.2V), current rating (20mA), and luminous intensity (2mcd) must remain constant
• Optical Properties: Peak wavelength (583nm yellow), lens type (clear), and viewing angle (40°) must be maintained
• Physical Form Factor: Lens size (2.00mm diameter), lens style (round with domed top), and mounting configuration (through-hole, right-angle) must be identical
• Configuration: Single LED configuration only

The Dialight 5552401F qualifies as a direct substitute based on complete alignment with all electrical, optical, and mechanical parameters. The primary distinction is product status: 5552401F is active and RoHS3 compliant, whereas the original 5552401 is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5552401F is the direct functional equivalent of the obsolete 5552401. Selection of 5552401F is appropriate for:

• New production designs requiring a 2mm yellow LED circuit board indicator with 2.2V/20mA specifications
• Replacement of obsolete 5552401 units in existing assemblies where form factor and electrical performance must be preserved
• Applications requiring RoHS3 compliance, as 5552401F meets this regulatory requirement while the original does not

The transition from 5552401 to 5552401F involves no changes to circuit design, PCB layout, or electrical performance. Both parts share identical electrical ratings, optical characteristics, and mechanical dimensions.

Frequently Asked Questions (FAQ)

Q: Can the 5552401F be used as a direct replacement for the 5552401 in existing circuit designs?

A: Yes. The 5552401F is electrically and mechanically identical to the 5552401. No circuit modifications, PCB layout changes, or design alterations are required. The parts are pin-compatible and functionally equivalent.

Q: What is the primary difference between the 5552401 and 5552401F?

A: The 5552401F is the active production variant with RoHS3 compliance. The original 5552401 is obsolete and RoHS non-compliant. All electrical, optical, and mechanical specifications are identical.

Q: Are there any packaging differences between these parts?

A: The 5552401 is supplied in standard packaging, while the 5552401F is supplied in bulk packaging. This distinction affects order quantities and handling but does not impact component performance or compatibility.

Q: What parameters must remain constant when substituting this LED?

A: Voltage rating (2.2V), current rating (20mA), peak wavelength (583nm), luminous intensity (2mcd), viewing angle (40°), lens type (clear), lens size (2.00mm diameter), lens style (round with domed top), and mounting type (through-hole, right-angle) must all remain unchanged for functional equivalence.

Q: Is the 5552401F suitable for new designs?

A: Yes. The 5552401F is the recommended choice for new designs. It is an active product with current manufacturing support and RoHS3 compliance.