Dialight 5520311 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5520311 is a dual-level red LED circuit board indicator designed for 5V applications. This component features a 5mm diffused, tinted lens with right-angle through-hole mounting, delivering 2 millicandela at 13mA with a 60° viewing angle. The 5520311 is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

5520311

DialightIn Stock: 10505520311 Datasheet

Current PartRFQ

5520311F

DialightIn Stock: 6805520311F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Dialight 5520311 is determined by strict equivalence across the following critical parameters:

• Electrical Specifications: Voltage rating (5V), current draw (13mA), wavelength (655nm red), and brightness (2mcd)
• Mechanical Configuration: Dual-level (2 High) LED arrangement, 5mm T-1 3/4 form factor, round domed lens, diffused tinted appearance
• Mounting Interface: Right-angle through-hole mounting for PCB integration
• Environmental Compliance: MSL 1 rating, REACH unaffected status, EAR99 classification

The Dialight 5520311F qualifies as a direct substitute based on identical electrical and mechanical parameters. The primary distinction is product status: 5520311F is active and available, whereas 5520311 is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5520311F is the direct equivalent for the obsolete 5520311. Selection of 5520311F is based on:

• Product Status: 5520311F maintains active production status with confirmed inventory availability (624 pcs), whereas 5520311 is obsolete with limited remaining stock (1022 pcs).
• Compliance Certification: 5520311F carries RoHS3 compliance, providing enhanced regulatory alignment for new designs and manufacturing.
• Electrical and Mechanical Equivalence: All functional parameters—voltage, current, wavelength, brightness, lens configuration, and mounting interface—are identical.
• Supply Chain Continuity: Use of 5520311F ensures long-term component availability and eliminates obsolescence risk.

For applications currently using 5520311, direct substitution with 5520311F requires no circuit modifications or design changes.

Frequently Asked Questions (FAQ)

Q: Can 5520311F be used as a direct replacement for 5520311 in existing designs?

A: Yes. The 5520311F is electrically and mechanically identical to 5520311. No circuit modifications, PCB layout changes, or firmware adjustments are required. The component operates at identical voltage (5V), current (13mA), and brightness (2mcd) specifications.

Q: What is the primary difference between 5520311 and 5520311F?

A: The 5520311 is obsolete with no active manufacturing. The 5520311F is the active production equivalent from Dialight, carrying RoHS3 compliance and confirmed inventory availability. Both parts are functionally identical.

Q: Are there packaging differences between these parts?

A: The 5520311 is supplied in standard packaging, while 5520311F is supplied in bulk packaging. Both use identical component specifications and through-hole mounting interfaces. Bulk packaging does not affect electrical or mechanical performance.

Q: Does the RoHS3 compliance of 5520311F affect compatibility?

A: No. RoHS3 compliance indicates enhanced environmental and regulatory standards. The 5520311F meets or exceeds all specifications of the obsolete 5520311 and is fully compatible with existing circuit designs.

Q: What are the critical parameters for substitution eligibility?

A: Substitution is valid when the following parameters match: voltage rating (5V), current (13mA), wavelength (655nm), brightness (2mcd), lens configuration (2 High, diffused tinted, 5mm T-1 3/4), viewing angle (60°), and mounting type (through-hole, right-angle). The 5520311F meets all these criteria.