Dialight 5219459 LED GREEN/RED DIFFUSED 3MM T/H - Equivalent & Substitute Parts

Part Overview

The Dialight 5219459 is a bidirectional green/red diffused LED indicator designed for through-hole mounting in 3mm applications. This component provides dual-color indication with 2.1V forward voltage for green and 2V for red operation at 10mA test current. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Suitable alternatives maintain the core electrical characteristics while offering improved product status and compliance certifications.

Substiute Parts

5219459

DialightIn Stock: 11475219459 Datasheet

Current PartRFQ

5219459F

DialightIn Stock: 15905219459F Datasheet

DirectRFQ

WP937EGW

KingbrightIn Stock: 35204WP937EGW Datasheet

SimilarRFQ

XLUGR37M

SunLEDIn Stock: 6244XLUGR37M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Dialight 5219459 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Bidirectional green/red LED configuration
• 3mm through-hole radial mounting package
• Diffused white lens with round domed top
• Forward voltage range: 2.0V–2.2V for both colors
• Test current: 10mA–20mA operational range
• Viewing angle: 50°–60°
• Physical height compatibility: 4.60mm–5.70mm

Substitution Categories:

Direct Substitute (Same Series): Part 5219459F is the active production equivalent from Dialight, maintaining identical electrical specifications and package geometry while offering improved RoHS3 compliance and higher viewing angle (60°).

Cross-Manufacturer Alternatives: Parts WP937EGW (Kingbright) and XLUGR37M (SunLED) provide functional equivalence with minor parameter variations. These parts operate at slightly elevated test current (20mA) and forward voltage (2.2V green), with comparable or superior millicandela ratings and full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select Dialight 5219459F. This part maintains identical electrical performance and mechanical fit while providing active product status and RoHS3 compliance. No circuit redesign is required.

For Cross-Manufacturer Substitution: Kingbright WP937EGW and SunLED XLUGR37M are functionally equivalent alternatives. Both parts are RoHS3 compliant and actively manufactured. Design considerations include:

• Elevated test current (20mA vs. 10mA) requires verification of current-limiting resistor sizing in the application circuit
• Forward voltage increase (2.2V green vs. 2.1V) may require minor bias adjustment in precision applications
• Enhanced millicandela ratings provide improved visibility margin
• Viewing angle improvement (60° vs. 50°) expands operational viewing cone
• Physical height variation (4.60mm–5.70mm) must be verified against PCB clearance constraints

All substitute parts maintain through-hole radial mounting compatibility, diffused lens characteristics, and bidirectional green/red configuration. Selection should prioritize part availability, lead time, and compliance requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can 5219459F be used as a direct drop-in replacement for 5219459?

A: Yes. The 5219459F maintains identical forward voltage (2.1V green, 2V red), test current (10mA), millicandela ratings (10mcd green, 4.7mcd red), and physical dimensions (3mm lens, 5.70mm height). The primary difference is product status (active vs. obsolete) and RoHS3 compliance. No circuit modifications are required.

Q: What are the key differences between Dialight 5219459F and Kingbright WP937EGW?

A: Both parts share bidirectional green/red configuration, 3mm through-hole mounting, and diffused white lens. Differences include: WP937EGW operates at 20mA test current (vs. 10mA), 2.2V green forward voltage (vs. 2.1V), and delivers higher brightness (14mcd green, 10mcd red vs. 10mcd green, 4.7mcd red). Physical height is 5.60mm (vs. 5.70mm). These variations require circuit verification but do not prevent substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The original 5219459 is RoHS non-compliant. All listed substitutes—5219459F, WP937EGW, and XLUGR37M—are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the impact of increased test current (20mA) in cross-manufacturer substitutes?

A: Kingbright WP937EGW and SunLED XLUGR37M operate at 20mA test current compared to 10mA for the original part. This requires verification that current-limiting resistors in the application circuit can safely supply this current level without exceeding component power ratings or creating excessive voltage drop.

Q: Do the substitute parts fit the same PCB footprint?

A: Yes. All parts use through-hole radial mounting with 3mm lens diameter and compatible physical dimensions. Height variation (4.60mm–5.70mm) is within typical PCB clearance tolerances but should be verified for applications with tight vertical constraints.

Q: Which substitute offers the best brightness performance?

A: Kingbright WP937EGW delivers the highest brightness at 14mcd green and 10mcd red. SunLED XLUGR37M provides 13mcd green and 9mcd red. Both exceed the original 5219459 ratings (10mcd green, 4.7mcd red), providing improved visibility margin.

Q: Can I use these parts interchangeably in existing designs?

A: Dialight 5219459F is a direct interchange requiring no design changes. Kingbright WP937EGW and SunLED XLUGR37M require circuit verification due to elevated test current and forward voltage. Confirm that bias resistors, current-limiting components, and power supply capacity accommodate the higher operating parameters before implementation.