Dialight 5219456F LED Green Diffused 5MM T/H - Equivalent & Substitute Parts

Part Overview

The Dialight 5219456F is a green diffused 5mm through-hole LED indicator with a 34mcd brightness rating, designed for discrete radial mounting applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance requirements. The 5219456F operates at a 20mA test current and features a round domed lens with diffused green transparency, suitable for general indication applications where brightness and viewing angle are not critical constraints.

Substiute Parts

5219456F

DialightIn Stock: 12285219456F Datasheet

Current PartRFQ

5219270F

DialightIn Stock: 32725219270F Datasheet

MFR RecommendedRFQ

LTL-4238

Lite-On Inc.In Stock: 11193LTL-4238 Datasheet

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LTL2P3KGKNN

Lite-On Inc.In Stock: 22923LTL2P3KGKNN Datasheet

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LTL2R3KGKNN

Lite-On Inc.In Stock: 685LTL2R3KGKNN Datasheet

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MV3450

onsemiIn Stock: 1028MV3450 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5219456F is determined by the following critical parameters:

• Color: Green (all substitutes must be green)
• Mounting Type: Through Hole radial configuration
• Lens Size: 5mm or T-1 3/4 package equivalent
• Lens Style: Round with domed top
• Compliance: ROHS3 compliance required

Substitute parts are grouped into two categories:

MFR Recommended Substitute: Dialight 5219270F - Active product status with direct manufacturer lineage and identical compliance profile.

Similar Substitutes: Lite-On Inc. (LTL-4238, LTL2P3KGKNN, LTL2R3KGKNN) and onsemi (MV3450) - Parts meeting core electrical and mechanical compatibility criteria with variations in brightness, forward voltage, and viewing angle specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: Dialight 5219270F is the recommended substitute. As an active product from the original manufacturer with ROHS3 compliance and identical mechanical form factor, it provides direct compatibility with existing PCB designs. The lower brightness rating (5.8mcd vs. 34mcd) and reduced test current (10mA vs. 20mA) represent design improvements in the successor generation.

Alternative Selections: Lite-On Inc. parts (LTL-4238, LTL2P3KGKNN, LTL2R3KGKNN) are active products with ROHS3 compliance and through-hole radial mounting. These parts feature clear lens transparency rather than diffused, resulting in higher brightness ratings and narrower viewing angles. Selection among these alternatives depends on application requirements for brightness and viewing angle characteristics.

Avoid: onsemi MV3450 is classified as obsolete and does not provide long-term supply assurance equivalent to active products.

Frequently Asked Questions (FAQ)

Q: Can the 5219456F be directly replaced with the 5219270F? A: Yes. Both parts are manufactured by Dialight, feature identical 5mm lens size and round domed top configuration, and share ROHS3 compliance. PCB footprints are compatible. The 5219270F operates at lower current and brightness, which may require circuit verification if brightness is a functional requirement.

Q: What is the primary difference between the Dialight 5219270F and Lite-On substitutes? A: The 5219270F maintains diffused lens transparency matching the original 5219456F. Lite-On parts (LTL-4238, LTL2P3KGKNN, LTL2R3KGKNN) feature clear lens transparency, resulting in significantly higher brightness ratings (90mcd to 980mcd) and narrower viewing angles (16° to 30°). Lens transparency selection depends on application visibility requirements.

Q: Are all substitute parts ROHS3 compliant? A: Dialight 5219270F and all Lite-On parts (LTL-4238, LTL2P3KGKNN, LTL2R3KGKNN) are ROHS3 compliant. onsemi MV3450 does not specify RoHS status and is obsolete.

Q: What is the height difference between the main part and substitutes? A: The 5219456F height is not specified. Substitute heights range from 8.60mm (LTL-4238) to 9.57mm (5219270F). Verify PCB clearance requirements before selection.

Q: Can I use a higher brightness substitute in place of the 5219456F? A: Brightness substitution depends on circuit design. Higher brightness parts (LTL2P3KGKNN at 980mcd, LTL2R3KGKNN at 680mcd) may require circuit current limiting adjustments. Verify application requirements and circuit compatibility.

Q: What viewing angle should I select? A: The 5219456F viewing angle is not specified. If viewing angle is not a functional requirement, any substitute with through-hole radial mounting and 5mm lens size is mechanically compatible. If viewing angle is critical, select based on application requirements: narrower angles (16°) for focused indication, wider angles (30°) for distributed visibility.