Dialight 5219985F LED Green Clear 3MM T/H Equivalent & Substitute Parts

Part Overview

The Dialight 5219985F is an active green LED indication component featuring a 3mm through-hole radial package with clear lens. This discrete 3V LED operates at 532nm dominant wavelength with 495mcd brightness rating and 30° viewing angle. The component is designed for standard LED indication applications requiring through-hole mounting. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or application-specific performance needs while maintaining compatibility with existing PCB designs and electrical specifications.

Substiute Parts

5219985F

DialightIn Stock: 12525219985F Datasheet

Current PartRFQ

SSL-LX3044UEGC

Lumex Opto/Components Inc.In Stock: 902SSL-LX3044UEGC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Dialight 5219985F is evaluated based on the following critical parameters that determine functional compatibility:

Color and Wavelength: Both the main part and substitute must be green LEDs. The Dialight 5219985F operates at 532nm dominant wavelength. Substitute parts must maintain green color specification for indication purposes.

Mounting Type and Package: Both components must support through-hole radial mounting to ensure PCB compatibility without redesign.

Lens Size and Style: The 3mm lens diameter with round domed top is a standard form factor. Substitute parts using T-1 package (3mm, T-1 designation) maintain mechanical compatibility.

Electrical Parameters: Forward voltage (Vf) and test current define circuit design requirements. The Dialight 5219985F operates at 3V typical with 10mA test current. Substitute parts with similar or slightly higher Vf (up to 4.6V) remain compatible with standard LED circuit designs using current-limiting resistors.

Brightness and Viewing Angle: The 495mcd rating and 30° viewing angle define optical performance. Substitute parts with equal or higher brightness maintain or improve indication visibility.

Compliance: Both parts must maintain ROHS3 compliance and REACH unaffected status for regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the Dialight 5219985F and Lumex SSL-LX3044UEGC are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

The Lumex SSL-LX3044UEGC serves as a functional substitute with the following considerations:

Electrical Compatibility: The forward voltage increases from 3V to 4.6V. This 0.5V difference requires circuit verification. Standard LED current-limiting resistor calculations will accommodate this variance. Test current specification increases from 10mA to 20mA, indicating higher brightness capability at rated conditions.

Optical Performance: The Lumex part delivers 1100mcd compared to 495mcd, providing 2.2x brightness improvement. Both maintain 30° viewing angle and clear lens characteristics. This brightness increase is suitable for applications requiring enhanced visibility without optical redesign.

Mechanical Compatibility: Both parts use 3mm through-hole radial packages with round domed tops. The Lumex part is 1.5mm shorter (4.60mm vs 6.10mm maximum height), which may provide advantages in space-constrained PCB layouts.

Inventory and Availability: Selection between these parts should consider current inventory status and procurement lead times for your specific application timeline.

Frequently Asked Questions (FAQ)

Q: Can the Lumex SSL-LX3044UEGC directly replace the Dialight 5219985F without circuit modification?

A: The Lumex part is mechanically and functionally compatible for through-hole mounting. However, the forward voltage increase from 3V to 4.6V requires verification of your current-limiting resistor design. Recalculate resistor values using the new Vf specification to maintain proper LED current. The higher brightness (1100mcd vs 495mcd) is compatible with standard indication applications.

Q: What is the difference between the 3mm and T-1 package designations?

A: Both designations refer to the same 3mm lens diameter through-hole radial package form factor. T-1 is an alternative industry designation for this standard package size. The parts are mechanically interchangeable in PCB designs.

Q: Does the brightness difference affect circuit design?

A: The Lumex part's higher brightness (1100mcd) results from its 20mA test current specification versus the Dialight's 10mA. If your circuit operates the LED at the same current level as the original design, brightness will scale proportionally. Verify that your power supply and current-limiting resistor can safely handle the electrical parameters of the substitute part.

Q: Are both parts suitable for the same environmental conditions?

A: Both parts maintain ROHS3 compliance and REACH unaffected status. Both specify Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Verify specific operating temperature and humidity ranges in detailed datasheets for your application environment.

Q: What is the impact of the 1.5mm height difference?

A: The Lumex part's reduced maximum height (4.60mm vs 6.10mm) may provide benefits in applications with vertical space constraints. This difference does not affect electrical performance and may simplify PCB layout in compact designs.