Dialight 5510409 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5510409 is a 3mm red LED circuit board indicator designed for through-hole, right-angle mounting applications. This part operates at 2V with 10mA current consumption and delivers 10 millicandela brightness with a 45° viewing angle. The product is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring compatible red LED indicators in the 551 series.

Substiute Parts

5510409

DialightIn Stock: 7865510409 Datasheet

Current PartRFQ

5510403F

DialightIn Stock: 10415510403F Datasheet

DirectRFQ

5510404F

DialightIn Stock: 19365510404F Datasheet

DirectRFQ

5510407010F

DialightIn Stock: 21715510407010F Datasheet

DirectRFQ

5510407F

DialightIn Stock: 36605510407F Datasheet

DirectRFQ

5510409F

DialightIn Stock: 33085510409F Datasheet

DirectRFQ

WP934AD/ID

KingbrightIn Stock: 1262WP934AD/ID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5510409 is determined by the following critical parameters:

Direct Substitutes (Dialight 551 Series - Same Electrical and Mechanical Specifications):

• Color: Red
• Wavelength - Peak: 650nm
• Configuration: Single
• Current: 10mA
• Voltage Rating: 2V
• Millicandela Rating: 10mcd
• Viewing Angle: 45°
• Lens Type: Diffused, Tinted
• Lens Style: Round with Domed Top
• Lens Size: 3mm, T-1
• Mounting Type: Through Hole, Right Angle

Parts meeting all these parameters are classified as direct substitutes and are electrically and mechanically interchangeable with the 5510409.

Similar Substitutes (Cross-Manufacturer - Functional Equivalence with Parameter Variations):

• Color: Red
• Lens Type: Diffused, Tinted
• Lens Style: Round with Domed Top
• Lens Size: 3mm, T-1
• Mounting Type: Through Hole, Right Angle

Parts from other manufacturers meeting these core mechanical and optical criteria are classified as similar substitutes. These parts function in equivalent applications but operate under different electrical parameters (voltage, current, brightness).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Dialight 551 Series):

Parts 5510403F, 5510404F, 5510407010F, 5510407F, and 5510409F are direct electrical and mechanical equivalents to the obsolete 5510409. All five parts maintain identical voltage (2V), current (10mA), wavelength (650nm), and millicandela (10mcd) specifications. All active Dialight substitutes carry ROHS3 compliance certification, meeting modern regulatory requirements. Selection among these five parts should be based on availability and packaging requirements. Part 5510409F provides the closest functional match as the active production variant of the original 5510409 design.

Secondary Substitute (Cross-Manufacturer):

The Kingbright WP934AD/ID operates under different electrical parameters: 1.9V voltage rating, 30mA current consumption, 617nm wavelength, and 20mcd brightness output. This part shares the same mechanical form factor (3mm, T-1, round with domed top, through-hole right-angle mounting) and optical characteristics (diffused, tinted lens). The WP934AD/ID is suitable for applications where the circuit design accommodates higher current draw and lower voltage operation, and where increased brightness (20mcd versus 10mcd) is acceptable or beneficial.

Compliance Considerations:

All active Dialight substitutes (5510403F, 5510404F, 5510407010F, 5510407F, 5510409F) and the Kingbright alternative (WP934AD/ID) maintain ROHS3 compliance and REACH Unaffected status, ensuring compatibility with current environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can I use 5510409F as a direct replacement for the obsolete 5510409?

A: Yes. The 5510409F is the active production equivalent of the 5510409. Both parts share identical electrical specifications (2V, 10mA), optical output (10mcd, 650nm wavelength), mechanical form factor (3mm T-1 through-hole right-angle), and lens characteristics (diffused, tinted, round with domed top). The 5510409F carries ROHS3 compliance certification.

Q: What is the difference between 5510403F, 5510404F, 5510407010F, 5510407F, and 5510409F?

A: All five parts maintain identical electrical and optical specifications (2V, 10mA, 650nm, 10mcd) and mechanical form factors. Differences exist in viewing angle specification and internal design variants. Parts 5510403F, 5510407010F, and 5510407F specify 45° viewing angle. Part 5510404F does not specify viewing angle. Selection should prioritize availability and packaging format (bulk).

Q: Can I substitute the Kingbright WP934AD/ID for the Dialight 5510409?

A: The WP934AD/ID is mechanically compatible (3mm T-1 through-hole right-angle, diffused tinted lens) but operates under different electrical parameters. The WP934AD/ID requires 1.9V (versus 2V), draws 30mA (versus 10mA), produces 20mcd brightness (versus 10mcd), and emits at 617nm wavelength (versus 650nm). Substitution is possible only if the circuit design accommodates these electrical differences and if the increased brightness and different color tone are acceptable for the application.

Q: Are all substitute parts ROHS3 compliant?

A: All active Dialight substitutes (5510403F, 5510404F, 5510407010F, 5510407F, 5510409F) and the Kingbright WP934AD/ID carry ROHS3 compliance certification. The original 5510409 does not specify RoHS status.

Q: What packaging options are available for substitute parts?

A: Dialight substitutes are supplied in bulk packaging. The Kingbright WP934AD/ID is supplied in bag packaging. Verify packaging requirements with your procurement specifications before ordering.