LTL5H3CGS7 Equivalent & Substitute Parts

Part Overview

The LTL5H3CGS7 is a green 5mm oval through-hole LED manufactured by Lite-On Inc., designed for indication applications with a dominant wavelength of 527nm. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The diffused lens design and 1450mcd brightness rating define its primary application profile.

Substiute Parts

LTL5H3CGS7

Lite-On Inc.In Stock: 1286LTL5H3CGS7 Datasheet

Current PartRFQ

5219947F

DialightIn Stock: 10725219947F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTL5H3CGS7 is determined by the following critical parameters:

• Color and Wavelength Match: Dominant wavelength 527nm and peak wavelength 518nm (green spectrum)
• Electrical Compatibility: Forward voltage 3.8V and test current 20mA
• Mounting Configuration: Through-hole radial package
• Regulatory Compliance: ROHS3 compliance required

The substitute part 5219947F from Dialight meets these core electrical and wavelength requirements. However, differences exist in lens transparency (clear vs. diffused), brightness rating (4200mcd vs. 1450mcd), lens geometry (round vs. oval), and viewing angle (30° vs. 110°/50°). These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 5219947F from Dialight is electrically compatible with the LTL5H3CGS7, sharing identical forward voltage (3.8V), test current (20mA), and dominant wavelength (527nm). Both parts maintain ROHS3 compliance and are suitable for through-hole mounting applications.

The primary design consideration is the difference in optical characteristics. The LTL5H3CGS7 features a diffused lens with a wide viewing angle (110°/50°) and lower brightness (1450mcd), while the 5219947F provides a clear lens with a narrower viewing angle (30°) and higher brightness (4200mcd). The LTL5H3CGS7's oval lens geometry differs from the 5219947F's round geometry, and the height difference (11.10mm vs. 9.65mm) may affect PCB layout considerations.

Selection between these parts depends on whether the application requires the diffused optical properties and wide viewing angle of the original design, or whether the higher brightness and narrower beam angle of the substitute are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 5219947F directly replace the LTL5H3CGS7 in all applications?

A: Electrical substitution is valid based on matching forward voltage, test current, and wavelength. However, optical differences (lens transparency, viewing angle, brightness) must be evaluated against specific application requirements. Physical dimensions also differ slightly.

Q: What is the primary difference between these two parts?

A: The LTL5H3CGS7 uses a diffused oval lens with wide viewing angle and moderate brightness, while the 5219947F uses a clear round lens with narrow viewing angle and higher brightness. The choice depends on whether the application requires diffused light distribution or concentrated beam output.

Q: Are both parts RoHS compliant?

A: Yes, both the LTL5H3CGS7 and 5219947F are ROHS3 compliant.

Q: Does the height difference affect PCB compatibility?

A: The LTL5H3CGS7 has a maximum height of 11.10mm, while the 5219947F is 9.65mm. This 1.45mm difference should be evaluated against PCB clearance requirements and mechanical constraints in the application.

Q: Why is the LTL5H3CGS7 listed as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Lite-On Inc. The 5219947F from Dialight is an active product and represents a current-production alternative for green 527nm LED indication applications.