Dialight 5219831 LED Blue Diffused 3MM Through-Hole - Equivalent & Substitute Parts

Part Overview

The Dialight 5219831 is a blue diffused 3mm through-hole LED designed for discrete indication applications. This component operates at 4.6V forward voltage with a 10mA test current and delivers 13.15mcd luminous intensity. The part is classified as obsolete, which necessitates identification of active equivalent components for ongoing design support and procurement continuity.

Substiute Parts

5219831

DialightIn Stock: 9605219831 Datasheet

Current PartRFQ

5219831F

DialightIn Stock: 22485219831F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Dialight 5219831F qualifies as a direct substitute based on the following critical parameters:

• Electrical Compatibility: Identical forward voltage (4.6V) and test current (10mA)
• Optical Characteristics: Matching millicandela rating (13.15mcd), viewing angle (70°), and wavelength peak (428nm)
• Mechanical Compatibility: Identical lens configuration (round with domed top), lens size (2.80mm diameter), and maximum height (6.10mm)
• Mounting Compatibility: Identical through-hole radial package and 3mm supplier device package
• Lens Properties: Matching diffused lens transparency and white lens color

The primary distinction is product status: the 5219831F is active and RoHS3 compliant, whereas the original 5219831 is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5219831F is the direct active equivalent for the obsolete 5219831. Selection of the 5219831F is supported by:

• Product Status Alignment: The 5219831F maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The 5219831F achieves ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the original part is RoHS non-compliant
• Electrical and Optical Equivalence: All critical electrical parameters (forward voltage, test current) and optical characteristics (luminous intensity, viewing angle, wavelength) are identical
• Mechanical and Mounting Compatibility: Identical package configuration, dimensions, and through-hole mounting ensure direct PCB compatibility without design modification
• Environmental Certification: Both parts maintain REACH Unaffected status

Frequently Asked Questions (FAQ)

Q: Can the 5219831F be used as a direct replacement for the 5219831 without PCB modification?

A: Yes. The 5219831F is mechanically and electrically identical to the 5219831. Both components feature identical through-hole radial packages, 3mm supplier device packages, and matching dimensional specifications (6.10mm maximum height). No PCB layout changes are required.

Q: What is the primary reason to transition from the 5219831 to the 5219831F?

A: The 5219831 is classified as obsolete, creating procurement and supply chain risk. The 5219831F is an active product with confirmed inventory availability and ongoing manufacturing support. Additionally, the 5219831F achieves ROHS3 compliance, whereas the original part is RoHS non-compliant.

Q: Are the optical characteristics identical between these parts?

A: Yes. Both the 5219831 and 5219831F deliver 13.15mcd luminous intensity, maintain a 70° viewing angle, and feature diffused white lenses with round domed-top geometry. The wavelength peak is 428nm for both parts. The 5219831F specifies a dominant wavelength of 465nm, which is not specified for the original part.

Q: What packaging formats are available for each part?

A: The 5219831 is supplied in tape and reel packaging. The 5219831F is available in bulk packaging. Confirm packaging requirements with your procurement specification before ordering.

Q: Are there any electrical parameter differences that would affect circuit design?

A: No. Both parts operate at 4.6V forward voltage with a 10mA test current. Circuit designs developed for the 5219831 require no electrical modifications to accommodate the 5219831F.