LTL-4253-R1 Equivalent & Substitute Parts

Part Overview

The LTL-4253-R1 is a yellow diffused through-hole LED manufactured by Lite-On Inc., designed for indication applications with a dominant wavelength of 588nm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and production continuity. Substitute parts must maintain compatibility with the original mounting type, lens characteristics, and electrical performance parameters.

Substiute Parts

LTL-4253-R1

Lite-On Inc.In Stock: 748LTL-4253-R1 Datasheet

Current PartRFQ

SSL-LX5093YD-5V

Lumex Opto/Components Inc.In Stock: 802SSL-LX5093YD-5V Datasheet

MFR RecommendedRFQ

WP7113YD5V

KingbrightIn Stock: 14198WP7113YD5V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTL-4253-R1 are qualified based on the following criteria:

Primary Compatibility Parameters:

• Color: Yellow
• Lens Transparency: Diffused
• Lens Size: 5mm diameter
• Lens Style: Round with Domed Top
• Mounting Type: Through Hole
• Package / Case: Radial
• Height (Max): 8.60mm
• Wavelength Range: 585–590nm (peak and dominant)
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Performance Parameters:

• Millicandela Rating: 10–22mcd (acceptable range for indication applications)
• Viewing Angle: 30–60° (acceptable range for indication applications)
• Current - Test: 12–13mA (acceptable range for indication applications)

Both substitute parts meet these criteria and are classified as active products with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

WP7113YD5V (Kingbright) is the primary substitute for the LTL-4253-R1. This part is active, ROHS3 compliant, and REACH unaffected. The millicandela rating of 22mcd exceeds the original specification of 19mcd, providing equivalent or superior brightness performance. The viewing angle of 30° is narrower than the original 36°, which may be acceptable depending on application requirements. The test current of 13mA is within acceptable tolerance of the original 12mA specification.

SSL-LX5093YD-5V (Lumex Opto/Components Inc.) is a secondary substitute. This part is active, ROHS3 compliant, and REACH unaffected. The millicandela rating of 10mcd is lower than the original specification, which may limit suitability for applications requiring higher brightness. The viewing angle of 60° is wider than the original 36°, providing broader light distribution. Test current data is not provided for this part.

Both substitute parts maintain identical physical dimensions (8.60mm height, 5mm lens diameter), radial package configuration, and diffused yellow lens characteristics. Both are specified with 5V forward voltage, enabling direct integration into 5V-based indication circuits.

Frequently Asked Questions (FAQ)

Q: Can WP7113YD5V directly replace LTL-4253-R1 in existing designs?

A: Yes. WP7113YD5V maintains identical physical dimensions, mounting type, lens characteristics, and wavelength specifications. The higher millicandela rating (22mcd vs. 19mcd) and narrower viewing angle (30° vs. 36°) are within acceptable performance ranges for indication applications. Circuit integration requires no modification.

Q: What is the difference between the two substitute parts?

A: WP7113YD5V (Kingbright) provides higher brightness (22mcd) with a narrower viewing angle (30°). SSL-LX5093YD-5V (Lumex) provides lower brightness (10mcd) with a wider viewing angle (60°). Selection depends on application requirements for brightness and light distribution.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both WP7113YD5V and SSL-LX5093YD-5V are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the T-1 3/4 package designation?

A: T-1 3/4 refers to the lens diameter and style classification for through-hole LEDs. Both substitute parts are specified as T-1 3/4, confirming compatibility with the original 5mm diffused lens form factor.

Q: Can these parts be used interchangeably in the same circuit?

A: Both substitute parts are specified with 5V forward voltage, enabling use in 5V indication circuits. However, brightness differences (10mcd vs. 22mcd) and viewing angle variations (30° vs. 60°) may affect visual performance. Circuit validation is necessary to confirm suitability for specific application requirements.