LTL-307AE Equivalent & Substitute Parts

Part Overview

The LTL-307AE is an amber LED indicator manufactured by Lite-On Inc., designed for through-hole applications in discrete indication circuits. This T-1 3/4 (5mm) radial LED operates at 2.1V forward voltage with a 40mcd brightness rating and 602nm dominant wavelength. The part is Active status and ROHS3 compliant, making it suitable for current production environments. Substitute parts may be required due to inventory constraints, application-specific color requirements, or design modifications that permit alternative wavelength specifications within the same mechanical package.

Substiute Parts

LTL-307AE

Lite-On Inc.In Stock: 1338LTL-307AE Datasheet

Current PartRFQ

LTL-307E

Lite-On Inc.In Stock: 26700LTL-307E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LTL-307E is identified as a manufacturer-recommended substitute for the LTL-307AE. Substitution eligibility is determined by the following parameters:

Mechanical Compatibility:

• Identical lens size (5mm, T-1 3/4)
• Identical mounting type (Through Hole, Radial)
• Identical maximum height (8.60mm)
• Same base product number (LTL-307)

Electrical Compatibility:

• Test current remains constant at 20mA
• Forward voltage within acceptable range (2.0V vs. 2.1V)
• Both parts operate within standard LED circuit design parameters

Compliance & Status:

• Both parts are Active status
• Both are ROHS3 compliant
• Both carry identical ECCN and HTSUS classifications

Differences Requiring Design Consideration:

• Color: Amber (602nm) vs. Red (623nm)
• Lens transparency: Clear vs. Diffused
• Brightness: 40mcd vs. 19mcd
• Viewing angle: 40° vs. 50°

Substitution is valid only when the application permits alternative color and brightness specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the LTL-307AE and LTL-307E are Active status products manufactured by Lite-On Inc. and meet ROHS3 compliance requirements. Selection between these parts is determined by application requirements rather than compliance or availability status.

The LTL-307AE is the primary choice when amber (602nm) indication is specified in the circuit design. The LTL-307E serves as a substitute only when the application design permits red (623nm) indication and can accommodate the reduced brightness (19mcd vs. 40mcd) and diffused lens characteristics. The 0.1V difference in forward voltage (2.1V vs. 2.0V) is within standard LED circuit tolerance and does not require circuit redesign.

Both parts share identical mechanical dimensions, mounting configuration, and test current specifications, ensuring PCB layout compatibility and circuit integration without modification.

Frequently Asked Questions (FAQ)

Q: Can LTL-307E replace LTL-307AE in any application?

A: No. Substitution is valid only when the application design permits red (623nm) indication instead of amber (602nm). The color change is a functional specification change, not a transparent substitution.

Q: Are there mechanical compatibility concerns between these parts?

A: No. Both parts are identical T-1 3/4 (5mm) radial through-hole LEDs with 8.60mm maximum height. PCB footprints and mounting requirements are identical.

Q: Does the brightness difference (40mcd vs. 19mcd) affect circuit design?

A: The brightness difference is a functional characteristic. If the application requires 40mcd brightness for visibility or specification compliance, the LTL-307E cannot be used. If brightness requirements are less stringent, the LTL-307E is acceptable. Circuit current and voltage design remain unchanged.

Q: What is the impact of the diffused lens on the LTL-307E?

A: The LTL-307E features a diffused lens compared to the clear lens on the LTL-307AE. This affects light distribution and appearance but does not impact electrical circuit design or mounting compatibility.

Q: Are forward voltage differences significant?

A: The 0.1V difference (2.1V vs. 2.0V) is within standard LED circuit design tolerance. No circuit modification is required for substitution.

Q: Do both parts meet current compliance standards?

A: Yes. Both parts are ROHS3 compliant with identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications.