TLUR2400-AS12 Equivalent & Substitute Parts

Part Overview

The TLUR2400-AS12 is a red diffused 1.8mm through-hole LED manufactured by Vishay Semiconductor Opto Division, designed for indication applications with a dominant wavelength of 630nm and typical forward voltage of 2V. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The availability of active alternative parts ensures design continuity and supply chain reliability.

Substiute Parts

TLUR2400-AS12

Vishay Semiconductor Opto DivisionIn Stock: 977TLUR2400-AS12 Datasheet

Current PartRFQ

LTL-709E

Lite-On Inc.In Stock: 3289LTL-709E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLUR2400-AS12 is based on the following critical parameters that define functional equivalence:

• Lens Size & Mounting: 1.80mm diameter through-hole configuration
• Color & Wavelength: Red spectrum (dominant wavelength 623–630nm range)
• Lens Transparency: Diffused optical characteristic
• Electrical Characteristics: Forward voltage 2V nominal, suitable for standard 5V logic circuits
• Mechanical Compatibility: Maximum height 3.60mm, radial package configuration
• Regulatory Compliance: ROHS3 compliance required for new designs

The LTL-709E from Lite-On Inc. meets these substitution criteria as an active product with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LTL-709E is a direct substitute for the obsolete TLUR2400-AS12 based on the following factors:

• Product Status: The LTL-709E is an active product with established supply chain availability (3275 pcs in stock), whereas the TLUR2400-AS12 is obsolete.
• Regulatory Compliance: Both parts are ROHS3 compliant, meeting current environmental standards.
• Mechanical Compatibility: Identical lens size (1.80mm), mounting type (through-hole radial), and maximum height (3.60mm) ensure direct PCB footprint compatibility.
• Electrical Compatibility: Matching forward voltage (2V) and similar test current ratings support equivalent circuit operation in standard indication applications.
• Optical Performance: Both parts operate in the red spectrum with diffused lens characteristics suitable for general indication purposes.

The LTL-709E exhibits slightly lower millicandela rating (12.6mcd vs. 15mcd) and narrower viewing angle (38° vs. 40°), which are acceptable trade-offs for applications where the original brightness and viewing angle are not critical design constraints.

Frequently Asked Questions (FAQ)

Q: Can the LTL-709E be used as a direct replacement for the TLUR2400-AS12 on existing PCBs?

A: Yes. Both parts share identical lens size (1.80mm), mounting type (through-hole radial), and maximum height (3.60mm), enabling direct PCB footprint compatibility without layout modifications.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (Vishay vs. Lite-On), product status (obsolete vs. active), test current (20mA vs. 10mA), millicandela rating (15mcd vs. 12.6mcd), and dominant wavelength (630nm vs. 623nm). Both operate at 2V forward voltage with diffused red lenses.

Q: Is the lower millicandela rating of the LTL-709E a concern?

A: The 12.6mcd rating of the LTL-709E is approximately 84% of the original 15mcd specification. This difference is acceptable for standard indication applications where brightness is not a critical parameter. Applications requiring the original brightness level should evaluate alternative parts with higher millicandela ratings.

Q: Are there any compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The LTL-709E carries REACH Affected status and EAR99 ECCN classification, whereas the TLUR2400-AS12 is marked as REACH Unaffected and OBSOLETE ECCN. These differences reflect the active vs. obsolete product status and do not affect functional substitution.

Q: What is the viewing angle difference, and does it matter?

A: The LTL-709E has a 38° viewing angle compared to the original 40°. This 2° difference is negligible for most indication applications and does not affect practical performance in standard circuit designs.

Q: Can I use the LTL-709E at the original 20mA test current?

A: The LTL-709E is rated for 10mA test current, which is lower than the original 20mA specification. Circuit designs should be evaluated to ensure operation within the LTL-709E's rated current limits. Operating at higher currents may reduce component lifespan.