TLHY6400-CS12Z Yellow LED T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The TLHY6400-CS12Z is a yellow 588nm LED indicator manufactured by Vishay Semiconductor Opto Division, designed for discrete indication applications in through-hole configurations. This component features a 5mm diffused lens with a domed top, forward voltage of 2.4V at 20mA test current, and a brightness rating of 10 millicandela. The part is currently classified as obsolete, necessitating identification of active equivalent components that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Substiute Parts

TLHY6400-CS12Z

Vishay Semiconductor Opto DivisionIn Stock: 1167TLHY6400-CS12Z Datasheet

Current PartRFQ

TLHY6405-ASZ

Vishay Semiconductor Opto DivisionIn Stock: 1004TLHY6405-ASZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLHY6400-CS12Z is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Color: Yellow
• Wavelength - Dominant: 588nm
• Wavelength - Peak: 585nm
• Voltage - Forward (Vf) Typical: 2.4V
• Current - Test: 20mA
• Viewing Angle: 60°
• Lens Transparency: Diffused
• Lens Style: Round with Domed Top
• Lens Size: 5mm, T-1 3/4
• Size / Dimension: 5.00mm Dia
• Height (Max): 9.00mm
• Mounting Type: Through Hole
• Package / Case: Radial
• Supplier Device Package: T-1 3/4
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation:

• Millicandela Rating: Substitute parts may exceed the original 10mcd specification, provided all other parameters remain identical. Higher brightness ratings are acceptable for direct substitution in indication circuits.
• Product Status: Active substitute parts are preferred over obsolete originals for new designs and ongoing production.

Parameter Comparison

Engineering Selection Recommendations

The TLHY6405-ASZ is a direct electrical and mechanical substitute for the TLHY6400-CS12Z. Both components are manufactured by Vishay Semiconductor Opto Division and share identical specifications across all critical parameters including forward voltage, test current, wavelength characteristics, lens geometry, and through-hole radial packaging.

The TLHY6405-ASZ provides a 40% increase in brightness (14mcd versus 10mcd) while maintaining all other electrical and mechanical characteristics. This brightness increase does not introduce incompatibility and is acceptable for direct substitution in indication circuits.

The TLHY6405-ASZ holds active product status, ensuring ongoing availability and manufacturing support. Both components maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity ratings, confirming suitability for standard PCB assembly and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the TLHY6405-ASZ replace the TLHY6400-CS12Z in existing designs?

A: Yes. The TLHY6405-ASZ is a direct substitute. All electrical parameters (forward voltage, test current, wavelength) and mechanical parameters (lens size, mounting type, package) are identical. The increased brightness rating (14mcd versus 10mcd) does not create incompatibility.

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

A: The TLHY6405-ASZ provides higher brightness at 14 millicandela compared to the TLHY6400-CS12Z at 10 millicandela. The TLHY6405-ASZ also maintains active product status, whereas the TLHY6400-CS12Z is obsolete.

Q: Are the physical dimensions identical?

A: Yes. Both components feature a 5mm diameter lens with T-1 3/4 form factor, 9.00mm maximum height, and radial through-hole mounting configuration. PCB footprints and mechanical clearances are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TLHY6400-CS12Z and TLHY6405-ASZ are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity ratings.

Q: Is the viewing angle the same for both parts?

A: Yes. Both components provide a 60° viewing angle with diffused lens transparency and round domed top lens style.

Q: Can I use the TLHY6405-ASZ in applications requiring exactly 10 millicandela?

A: The TLHY6405-ASZ provides 14 millicandela, exceeding the 10 millicandela specification. For applications with strict brightness constraints, circuit design must account for the higher output. Standard current-limiting resistor adjustment accommodates this difference.