LTL-2223A Equivalent & Substitute Parts

Part Overview

The LTL-2223A is a red diffused through-hole LED manufactured by Lite-On Inc., designed for indication applications with a dominant wavelength of 623nm. This component is classified as obsolete, making substitute parts necessary for ongoing production and maintenance applications. The part operates at 2V forward voltage with a 20mA test current and features a 5mm round lens with flat top configuration.

Substiute Parts

LTL-2223A

Lite-On Inc.In Stock: 1125LTL-2223A Datasheet

Current PartRFQ

WP483EDT

KingbrightIn Stock: 813WP483EDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LTL-2223A is based on the following critical parameters that define functional compatibility:

• Forward voltage matching (2V)
• Through-hole radial mounting configuration
• Diffused lens transparency
• 5mm lens diameter
• 20mA test current rating
• Similar wavelength range for indication applications

The WP483EDT from Kingbright qualifies as a substitute based on these core electrical and mechanical parameters. While the WP483EDT differs in color (orange vs. red) and wavelength (617nm dominant vs. 623nm), these differences are acceptable in applications where the specific wavelength is not critical to circuit function. The substitute maintains identical forward voltage, test current, mounting type, and lens size specifications.

Parameter Comparison

Engineering Selection Recommendations

The WP483EDT is an active product from Kingbright with ROHS3 compliance and REACH unaffected status, making it suitable for applications requiring current regulatory compliance. The LTL-2223A, being obsolete, presents supply chain constraints that necessitate substitution.

Key considerations for selection:

• The WP483EDT maintains electrical compatibility with identical forward voltage and test current specifications
• Physical mounting compatibility is preserved through identical through-hole radial configuration and 5mm lens diameter
• The substitute features higher brightness (4mcd vs. 2.5mcd) and narrower viewing angle (100° vs. 200°), which may require circuit-level evaluation depending on application requirements
• Height difference (9.60mm vs. 6.75mm) must be verified against PCB layout constraints
• Color difference (orange vs. red) is a visual distinction that may impact application suitability

Frequently Asked Questions (FAQ)

Q: Can WP483EDT directly replace LTL-2223A without circuit modifications?

A: Electrical compatibility is maintained through matching forward voltage (2V) and test current (20mA) specifications. Physical mounting compatibility is preserved with identical through-hole radial configuration and 5mm lens diameter. However, the increased height (9.60mm vs. 6.75mm) and different viewing angle (100° vs. 200°) require verification against specific PCB layout and optical requirements.

Q: What is the significance of the color difference between the parts?

A: The LTL-2223A is red (623nm dominant wavelength) while the WP483EDT is orange (617nm dominant wavelength). This difference is a visual distinction. Substitution is appropriate only in applications where the specific wavelength is not functionally critical to circuit operation.

Q: How does the brightness difference affect substitution?

A: The WP483EDT provides 4mcd compared to the LTL-2223A's 2.5mcd. This higher brightness may be acceptable or beneficial depending on application requirements. Circuit-level evaluation is necessary if brightness consistency is critical.

Q: What compliance advantages does the WP483EDT offer?

A: The WP483EDT is ROHS3 compliant and REACH unaffected, providing current regulatory compliance. The LTL-2223A compliance status is not specified in available documentation.

Q: Are there package compatibility concerns?

A: Both parts use through-hole radial mounting with 5mm lens diameter. The WP483EDT is designated as T-1 3/4 package format. The height difference (9.60mm vs. 6.75mm) must be verified against PCB clearance requirements and component placement constraints.