Dialight 5520831F LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5520831F is a bi-level LED circuit board indicator featuring dual red and yellow LEDs in a 2 High configuration with through-hole, right-angle mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations.

The 5520831F provides simultaneous red and yellow indication capability with specified wavelengths of 650nm (red) and 585nm (yellow), operating at 2.1V and 2.2V respectively. As an obsolete product, sourcing alternatives from the active product portfolio ensures long-term component availability and supply chain continuity.

Substiute Parts

5520831F

DialightIn Stock: 10335520831F Datasheet

Current PartRFQ

5520231F

DialightIn Stock: 9225520231F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5520831F is based on the following critical parameters that must align between the original and substitute component:

Mandatory Alignment Parameters:

• Dual color configuration (Red and Yellow LEDs in single package)
• 2 High stacking arrangement
• Through-hole, right-angle mounting orientation
• Series 552 product family
• RoHS3 and REACH compliance status
• MSL 1 rating

Allowable Variation Parameters:

• Lens type and style (original unspecified; substitute may be diffused)
• Lens size (original unspecified; substitute may be 5mm T-1 3/4)
• Operating current (original unspecified; substitute specifies 20mA)
• Millicandela rating (substitute may differ: 6.3mcd Red, 8mcd Yellow vs. 34mcd original)
• Viewing angle (substitute may vary: 50° Red, 60° Yellow vs. 50° original)
• Voltage rating (substitute specifies 2.2V Red, 2V Yellow vs. 2.1V Red, 2.2V Yellow original)

The Dialight 5520231F qualifies as a substitute based on matching the mandatory parameters while offering an active product status with defined electrical and optical characteristics suitable for bi-level indication applications.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5520231F is the manufacturer-recommended substitute for the obsolete 5520831F. Both components maintain identical RoHS3 and REACH compliance certifications, ensuring regulatory alignment for applications requiring these standards.

The 5520231F offers the advantage of active product status, providing assured long-term availability and supply chain stability. The component maintains the same dual-color configuration, 2 High arrangement, and through-hole right-angle mounting required for direct mechanical and electrical integration into existing designs.

Selection of the 5520231F should account for the specified operating current of 20mA per LED and the defined voltage ratings of 2.2V (red) and 2V (yellow). The diffused lens type and 5mm T-1 3/4 form factor provide standardized optical characteristics suitable for circuit board indicator applications.

Frequently Asked Questions (FAQ)

Q: Can the 5520231F directly replace the 5520831F in existing designs?

A: The 5520231F maintains mechanical compatibility through identical through-hole, right-angle mounting and dual-color 2 High configuration. Circuit design must accommodate the specified 20mA operating current and voltage ratings of 2.2V (red) and 2V (yellow). The diffused lens type and 5mm form factor differ from the original unspecified lens characteristics.

Q: What are the key differences in optical performance?

A: The 5520231F provides 6.3mcd (red) and 8mcd (yellow) brightness compared to the original 34mcd specification for both colors. Wavelength peaks are 650nm (red) and 583nm (yellow), with viewing angles of 50° (red) and 60° (yellow). These differences reflect the diffused lens design and standardized 5mm T-1 3/4 form factor.

Q: Are both components RoHS and REACH compliant?

A: Yes. Both the 5520831F and 5520231F maintain ROHS3 compliance and REACH Unaffected status, suitable for applications requiring these regulatory certifications.

Q: What is the significance of the MSL 1 rating?

A: MSL 1 (Unlimited) indicates these components have unlimited shelf life and require no special moisture control during storage or handling, simplifying inventory management and logistics.

Q: Why is the 5520831F classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 5520231F, as an active product within the same Series 552 family, provides continued access to equivalent bi-level LED indicator functionality.