QL484YT LED Yellow Clear 3MM T-1 Through Hole - Equivalent & Substitute Parts

Part Overview

The QL484YT is a yellow clear LED indicator in T-1 (3mm) through-hole package manufactured by onsemi. This component is classified as an LED Indication discrete radial device designed for panel-mount applications. The product status is obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

QL484YT

onsemiIn Stock: 942QL484YT Datasheet

Current PartRFQ

WP424YDT

KingbrightIn Stock: 4647WP424YDT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the QL484YT is determined by the following critical parameters:

• Package Type: T-1 radial through-hole configuration
• Mounting Method: Through-hole PCB mounting
• Physical Dimensions: 3mm lens diameter with compatible height profile
• Functional Category: LED indication discrete component
• Compliance Requirements: REACH Unaffected and EAR99 classification

The WP424YDT from Kingbright meets these substitution criteria as an active-status T-1 through-hole yellow LED with identical package geometry and functional classification.

Parameter Comparison

Engineering Selection Recommendations

The WP424YDT is the designated substitute for the obsolete QL484YT based on matching package geometry, through-hole mounting configuration, and functional classification as a T-1 LED indicator.

The WP424YDT carries active product status, ensuring ongoing availability and supply chain continuity. The component is ROHS3 compliant, providing compliance advantage over the non-compliant QL484YT for new designs and regulated applications.

Both components share identical MSL classification (1 - Unlimited), REACH Unaffected status, and EAR99 export classification, ensuring regulatory equivalence.

The height difference (6.00mm vs. 4.10mm) must be evaluated against specific PCB layout constraints and mechanical clearance requirements in the target application.

Frequently Asked Questions (FAQ)

Q: Can WP424YDT directly replace QL484YT in existing designs?

A: The WP424YDT is mechanically and functionally compatible as a T-1 through-hole radial LED. The 1.90mm height difference must be verified against PCB clearance and mechanical assembly constraints specific to your application.

Q: What is the significance of the RoHS compliance difference?

A: The QL484YT is RoHS non-compliant while WP424YDT is ROHS3 compliant. For new designs or applications subject to RoHS regulations, the WP424YDT is the appropriate selection.

Q: Are the electrical characteristics specified for these components?

A: Detailed electrical parameters (forward voltage, test current, wavelength, luminous intensity) are not provided for the QL484YT. The WP424YDT specifies 2.1V forward voltage, 20mA test current, and 3mcd luminous intensity at 588nm dominant wavelength.

Q: What packaging options are available?

A: The QL484YT is available in bulk packaging. The WP424YDT is supplied in bulk packaging with 4624 pieces in current inventory.

Q: Are both components subject to export restrictions?

A: Both components carry EAR99 classification and are REACH Unaffected, indicating no additional export licensing requirements under standard trade regulations.