TLHG5405-AS12Z Equivalent & Substitute Parts

Part Overview

The TLHG5405-AS12Z is a green diffused LED indicator manufactured by Vishay Semiconductor Opto Division, designed for through-hole mounting applications. This component operates at 2.4V forward voltage with a 15mcd luminous intensity rating and features a 5mm T-1 3/4 lens form factor. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and maintenance applications.

Substiute Parts

TLHG5405-AS12Z

Vishay Semiconductor Opto DivisionIn Stock: 996TLHG5405-AS12Z Datasheet

Current PartRFQ

TLHG5400-AS12Z

Vishay Semiconductor Opto DivisionIn Stock: 1978TLHG5400-AS12Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLHG5405-AS12Z is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Color: Green
• Wavelength - Dominant: 569nm
• Wavelength - Peak: 565nm
• Voltage - Forward (Vf) (Typ): 2.4V
• Current - Test: 20mA
• Viewing Angle: 60°
• Lens Transparency: Diffused
• Lens Style: Round with Domed Top
• Lens Size: 5mm, T-1 3/4
• Mounting Type: Through Hole
• Package / Case: Radial
• Height (Max): 12.80mm
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation:

• Millicandela Rating: Substitute parts may have lower luminous intensity ratings while maintaining all other electrical and mechanical specifications
• Product Status: Active alternatives are preferred to obsolete components
• Packaging Format: Tape & Reel (TR) packaging is functionally equivalent to standard packaging for component selection purposes

The TLHG5400-AS12Z qualifies as a direct substitute based on these criteria, with the exception of a reduced millicandela rating of 10mcd compared to the original 15mcd specification.

Parameter Comparison

Engineering Selection Recommendations

The TLHG5400-AS12Z is the qualified substitute for the obsolete TLHG5405-AS12Z. Both components are manufactured by Vishay Semiconductor Opto Division and maintain identical electrical and mechanical specifications with the exception of luminous intensity.

Product Status Consideration: The TLHG5400-AS12Z carries an active product status, ensuring ongoing availability and supply chain continuity. The TLHG5405-AS12Z is classified as obsolete, making it unsuitable for new production applications.

Compliance Alignment: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility across applications.

Luminous Intensity Differential: The substitute part operates at 10mcd compared to the original 15mcd specification. This represents a 33% reduction in luminous intensity. Applications requiring the full 15mcd output specification must evaluate whether the reduced brightness of the substitute part meets functional requirements for indication purposes.

Packaging Availability: The substitute part is available in Tape & Reel (TR) packaging format, which is standard for production environments and provides equivalent functionality to alternative packaging formats.

Frequently Asked Questions (FAQ)

Q: Can the TLHG5400-AS12Z directly replace the TLHG5405-AS12Z in existing designs?

A: The TLHG5400-AS12Z is mechanically and electrically compatible with the TLHG5405-AS12Z across all critical parameters including forward voltage, test current, wavelength, viewing angle, lens form factor, and mounting configuration. The primary difference is the reduced luminous intensity rating of 10mcd versus 15mcd. Direct replacement is possible if the application does not require the full brightness specification of the original component.

Q: What is the significance of the millicandela rating difference?

A: Millicandela (mcd) rating specifies the luminous intensity of the LED. The TLHG5405-AS12Z provides 15mcd while the TLHG5400-AS12Z provides 10mcd. This difference affects the brightness of the indicator in the specified viewing angle. Applications where indicator visibility is critical must evaluate whether 10mcd provides sufficient brightness for the intended use case.

Q: Are both parts RoHS compliant?

A: Yes, both the TLHG5405-AS12Z and TLHG5400-AS12Z are ROHS3 compliant and carry identical moisture sensitivity ratings of MSL 1 (Unlimited), ensuring regulatory compatibility and environmental stability.

Q: What is the difference between the packaging formats?

A: The TLHG5405-AS12Z is supplied in standard packaging, while the TLHG5400-AS12Z is available in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly and production environments, providing equivalent component functionality with optimized handling for high-volume manufacturing.

Q: Why is the TLHG5405-AS12Z classified as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production of this component. The TLHG5400-AS12Z represents the active alternative from the same manufacturer, ensuring continued availability and support for applications requiring green 569nm diffused LEDs in the T-1 3/4 form factor.

Q: Are the wavelength specifications identical between both parts?

A: Yes, both components feature identical dominant wavelength (569nm) and peak wavelength (565nm) specifications, ensuring color consistency and optical performance equivalence in indication applications.