L53YT Yellow LED T-1 3/4 Through Hole - Equivalent & Substitute Parts

Part Overview

The L53YT is an active-status yellow LED indication component manufactured by Kingbright, designed for through-hole mounting applications. This 5mm T-1 3/4 form factor LED operates at 2.1V forward voltage with a 40 millicandela brightness rating and 588nm dominant wavelength output. The component is RoHS3 compliant and carries unlimited moisture sensitivity classification. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers while accommodating specific application requirements for brightness, viewing angle, or packaging format.

Substiute Parts

L53YT

KingbrightIn Stock: 865L53YT Datasheet

Current PartRFQ

WP7113YT

KingbrightIn Stock: 15396WP7113YT Datasheet

DirectRFQ

SSL-LX5093YT

Lumex Opto/Components Inc.In Stock: 12329SSL-LX5093YT Datasheet

DirectRFQ

HLMP-3416

Broadcom LimitedIn Stock: 5838HLMP-3416 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L53YT are classified into two categories based on electrical and mechanical parameter alignment:

Direct Substitutes maintain compatibility across all critical parameters: yellow color, clear lens, 5mm T-1 3/4 form factor, through-hole radial mounting, 2.1V forward voltage, and RoHS3 compliance. Within this category, variations in millicandela rating, test current, and viewing angle are permitted when application requirements allow increased brightness or modified light distribution characteristics.

Similar Substitutes maintain core mechanical compatibility (5mm T-1 3/4 through-hole radial package) and color specification but permit controlled variations in forward voltage (within 0.1V tolerance), wavelength characteristics, and brightness ratings. These parts remain RoHS3 compliant and suitable for applications where exact electrical matching is not required.

The following parameters determine substitution eligibility:

• Lens color and transparency (Yellow, Clear)
• Physical form factor (5mm T-1 3/4)
• Mounting configuration (Through Hole, Radial)
• Forward voltage range (2.0V to 2.1V)
• Regulatory compliance (RoHS3, REACH Unaffected)

Parameter Comparison

Engineering Selection Recommendations

WP7113YT (Kingbright, Direct Substitute): This part maintains identical forward voltage (2.1V) and wavelength characteristics (590nm peak) to the L53YT. The doubled millicandela rating (80mcd versus 40mcd) and increased test current (20mA versus 10mA) indicate higher brightness output. The narrower viewing angle (20° versus 30°) concentrates light intensity. This substitute is suitable for applications requiring increased brightness within the same electrical operating point. Reduced height (8.60mm versus 9.60mm) accommodates space-constrained PCB layouts. RoHS3 compliance and unlimited moisture sensitivity classification match the main part. Bulk packaging differs from tape & reel format.

SSL-LX5093YT (Lumex Opto/Components Inc., Direct Substitute): This part maintains identical forward voltage (2.1V), millicandela rating (40mcd), and viewing angle (30°) to the L53YT. Peak wavelength differs slightly (585nm versus 590nm), remaining within yellow spectrum classification. Increased test current (20mA versus 10mA) reflects different measurement conditions rather than operational requirement changes. Reduced height (8.60mm versus 9.60mm) provides layout flexibility. RoHS3 compliance and unlimited moisture sensitivity classification are maintained. Cross-manufacturer substitution is supported by identical optical and electrical performance parameters.

HLMP-3416 (Broadcom Limited, Similar Substitute): This part maintains mechanical compatibility (5mm T-1 3/4 through-hole radial package) and yellow color specification. Forward voltage is 0.1V lower (2.0V versus 2.1V), requiring circuit verification for current-limiting resistor recalculation. Millicandela rating (50mcd) exceeds the main part. Viewing angle is wider (35° versus 30°), distributing light over a larger area. Peak wavelength (583nm) remains within yellow specification. Height (9.19mm) is comparable to the main part. RoHS3 compliance and unlimited moisture sensitivity classification are maintained. This substitute is suitable for applications where the 0.1V forward voltage difference can be accommodated through circuit design adjustment.

All substitute parts maintain active product status and full regulatory compliance (RoHS3, REACH Unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can WP7113YT replace L53YT in any application?

A: WP7113YT is electrically compatible (identical 2.1V forward voltage and 588nm/590nm wavelength) but provides doubled brightness (80mcd versus 40mcd) and narrower viewing angle (20° versus 30°). Substitution is valid when increased brightness and concentrated light distribution are acceptable or beneficial. Circuit design remains unchanged. Verify that the narrower viewing angle meets application visibility requirements.

Q: What is the primary difference between SSL-LX5093YT and L53YT?

A: SSL-LX5093YT is a cross-manufacturer equivalent from Lumex Opto/Components Inc. maintaining identical electrical performance (2.1V forward voltage, 40mcd brightness, 30° viewing angle) and mechanical form factor. The only notable difference is slightly lower peak wavelength (585nm versus 590nm), both within yellow LED specification. This part is a direct functional equivalent suitable for inventory diversification or supply chain continuity.

Q: Is HLMP-3416 a suitable replacement for L53YT?

A: HLMP-3416 is mechanically compatible (5mm T-1 3/4 through-hole radial package) but operates at 2.0V forward voltage compared to L53YT's 2.1V. This 0.1V difference requires recalculation of current-limiting resistor values in the circuit. HLMP-3416 provides higher brightness (50mcd versus 40mcd) and wider viewing angle (35° versus 30°). Substitution is valid when circuit design can accommodate the forward voltage adjustment and when increased brightness and wider light distribution are acceptable.

Q: Why do substitute parts have different test currents?

A: Test current values (10mA or 20mA) represent the measurement condition under which brightness and other optical parameters are specified by the manufacturer. These values do not dictate operational current requirements. Actual circuit current is determined by the series resistor and supply voltage. Different test currents reflect manufacturer measurement standards and do not prevent substitution.

Q: Can I use bulk-packaged substitutes in place of tape & reel L53YT?

A: Yes. Bulk and tape & reel packaging formats contain identical components. Packaging format selection depends on assembly process requirements (automated pick-and-place equipment typically requires tape & reel; manual assembly can use bulk). Electrical and optical performance are unaffected by packaging format.

Q: What viewing angle should I select for my application?

A: Viewing angle determines the cone of light distribution. L53YT and SSL-LX5093YT provide 30° viewing angles for moderate light spread. WP7113YT's 20° angle concentrates brightness in a narrower cone, suitable for indicator lights requiring focused visibility. HLMP-3416's 35° angle distributes light over a wider area, suitable for applications requiring broader visibility. Select based on required light distribution pattern, not brightness alone.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. L53YT, WP7113YT, SSL-LX5093YT, and HLMP-3416 are all RoHS3 compliant with unlimited moisture sensitivity classification (MSL 1). All parts are REACH Unaffected and classified as EAR99 for export control purposes. Regulatory compliance is maintained across all substitutions.