QTLP912Y Yellow LED Axial Equivalent & Substitute Parts

Part Overview

The QTLP912Y is a yellow 590nm LED indication component manufactured by onsemi in a subminiature T-3/4 axial package with flat leads. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The component is designed for through-hole axial mounting applications requiring yellow light indication at 600 millicandela brightness.

Substiute Parts

QTLP912Y

onsemiIn Stock: 1049QTLP912Y Datasheet

Current PartRFQ

SSL-LXA228SYC

Lumex Opto/Components Inc.In Stock: 1071SSL-LXA228SYC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QTLP912Y is determined by the following critical parameters:

• Color and Wavelength: Yellow indication at 590nm dominant wavelength
• Electrical Characteristics: Forward voltage (Vf) in the range of 2.0V to 2.1V and test current of 20mA
• Optical Output: Millicandela rating of 300mcd or higher to maintain adequate brightness indication
• Mechanical Compatibility: Through-hole axial mounting with flat leads, T-3/4 lens size (approximately 2mm), and round domed lens style
• Package Dimensions: Maximum height of 3.00mm with 2.50mm length and 2.00mm width
• Viewing Angle: 25° viewing angle for indication applications
• Compliance: REACH Unaffected status and EAR99 ECCN classification

The SSL-LXA228SYC from Lumex Opto/Components Inc. meets these substitution criteria as an active product with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The SSL-LXA228SYC is qualified as a direct substitute for the obsolete QTLP912Y based on the following factors:

Product Status: The SSL-LXA228SYC is an active product in current production, providing long-term availability and supply chain continuity compared to the obsolete QTLP912Y.

Compliance and Certifications: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, ensuring regulatory equivalence. The SSL-LXA228SYC carries RoHS3 compliance, providing additional environmental compliance assurance.

Electrical Compatibility: Forward voltage differential of 0.1V (2.1V vs. 2.0V) is within acceptable tolerance for indication circuit applications. Test current specification of 20mA is identical.

Mechanical and Optical Compatibility: Identical mounting type (through-hole axial), package configuration (axial flat leads), viewing angle (25°), and physical dimensions (2.50mm L x 2.00mm W, height within envelope). Lens style and size are compatible for T-3/4 applications.

Brightness Consideration: The SSL-LXA228SYC provides 300mcd compared to the QTLP912Y's 600mcd. Applications requiring the full 600mcd brightness specification should evaluate circuit design modifications or alternative high-brightness yellow LED options.

Frequently Asked Questions (FAQ)

Q: Can the SSL-LXA228SYC directly replace the QTLP912Y without circuit modifications?

A: Yes, for most indication applications. The electrical characteristics (2.0V forward voltage, 20mA test current) and mechanical package (through-hole axial, flat leads, T-3/4 form factor) are compatible. However, the reduced brightness (300mcd vs. 600mcd) may require evaluation in applications with specific luminous intensity requirements.

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

A: The QTLP912Y is obsolete, while the SSL-LXA228SYC is an active product. The SSL-LXA228SYC has lower millicandela rating (300mcd vs. 600mcd) and slightly lower forward voltage (2.0V vs. 2.1V). Peak wavelength differs slightly (585nm vs. 592nm), both within the yellow spectrum.

Q: Are the physical dimensions identical?

A: The length and width dimensions are identical (2.50mm L x 2.00mm W). The SSL-LXA228SYC height is 2.80mm compared to 3.00mm for the QTLP912Y, providing a smaller envelope that remains compatible with T-3/4 mounting applications.

Q: What compliance certifications apply to the SSL-LXA228SYC?

A: The SSL-LXA228SYC is RoHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes. These certifications match or exceed the compliance profile of the QTLP912Y.

Q: Is the SSL-LXA228SYC suitable for high-brightness indication requirements?

A: The SSL-LXA228SYC provides 300mcd brightness, which is adequate for standard indication applications. Applications requiring 600mcd or higher brightness should specify alternative high-brightness yellow LED components or evaluate circuit design modifications to increase forward current within component ratings.

Q: What is the moisture sensitivity level difference?

A: The QTLP912Y has MSL 1 (unlimited moisture sensitivity), while the SSL-LXA228SYC has MSL 4 (72-hour floor life). For standard through-hole assembly processes, the SSL-LXA228SYC's MSL 4 rating is acceptable and does not impact typical manufacturing environments.