Dialight 5510504F LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5510504F is an LED Circuit Board Indicator (CBI) designed for through-hole, right-angle mounting applications. This single red diffused LED operates at 5V with a 20mA current rating and delivers 29mcd luminous intensity. The component features a 3mm T-1 form factor with a round domed top lens, suitable for panel-mount indicator applications requiring standardized electrical and mechanical compatibility.

The 5510504F maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring long-term availability and regulatory compliance for industrial and commercial applications. Substitute parts are identified based on identical electrical performance parameters and mechanical form factors.

Substiute Parts

5510504F

DialightIn Stock: 7745510504F Datasheet

Current PartRFQ

5510503F

DialightIn Stock: 22665510503F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5510504F are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution criteria are based on the following parameters that must remain identical:

• Color: Red
• Wavelength - Peak: 635nm
• Configuration: Single
• Current Rating: 20mA
• Millicandela Rating: 29mcd
• Viewing Angle: 60°
• Lens Type: Diffused, Tinted
• Lens Style: Round with Domed Top
• Lens Size: 3mm, T-1
• Voltage Rating: 5V
• Mounting Type: Through Hole, Right Angle
• Series: 551
• Manufacturer: Dialight

The Dialight 5510503F meets all substitution criteria and is classified as a direct equivalent part within the same product series.

Parameter Comparison

Engineering Selection Recommendations

Both the 5510504F and 5510503F are Active status components with full RoHS3 compliance and REACH unaffected designation. Selection between these parts is based on inventory availability and procurement lead times, as both components are electrically and mechanically identical.

The 5510503F currently maintains higher inventory levels (2163 pcs) compared to the 5510504F (711 pcs), making it the preferred selection for applications requiring immediate availability or high-volume procurement. Both parts carry identical compliance certifications and are suitable for direct substitution in circuit board indicator applications.

Frequently Asked Questions (FAQ)

Q: Are the 5510504F and 5510503F fully interchangeable?

A: Yes. Both parts are identical in all electrical parameters (5V, 20mA, 29mcd, 635nm peak wavelength), optical characteristics (60° viewing angle, diffused tinted lens), and mechanical form factor (3mm T-1 through-hole right-angle mount). Direct substitution is supported without circuit modification.

Q: What determines substitution eligibility for this LED indicator?

A: Substitution is based on matching all critical parameters: operating voltage, current rating, luminous intensity, peak wavelength, viewing angle, lens type and style, physical size, and mounting configuration. Both parts must maintain identical RoHS and MSL compliance status.

Q: Can I use these parts in high-volume production?

A: Both the 5510504F and 5510503F are Active status components with unlimited MSL rating (MSL 1), suitable for high-volume manufacturing. Inventory availability should be confirmed with your supplier for production scheduling.

Q: Are there any packaging differences between these parts?

A: Both parts are supplied in Bulk packaging. No packaging format differences exist between the 5510504F and 5510503F.