SSL-LX3054YC Equivalent & Substitute Parts

Part Overview

The SSL-LX3054YC is a yellow LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This T-1 format discrete LED operates at 2.1V forward voltage with a 90mcd brightness rating and features a clear, colorless lens with 30° viewing angle. The component is ROHS3 compliant and currently maintains active product status with 930 units in stock.

Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements where electrical and mechanical parameters remain within acceptable tolerances for the intended circuit design.

Substiute Parts

SSL-LX3054YC

Lumex Opto/Components Inc.In Stock: 975SSL-LX3054YC Datasheet

Current PartRFQ

151031YS06000

Würth ElektronikIn Stock: 2948151031YS06000 Datasheet

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LTL1CHKSKNN

Lite-On Inc.In Stock: 1610LTL1CHKSKNN Datasheet

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SLR-342DC3F

Rohm SemiconductorIn Stock: 2978SLR-342DC3F Datasheet

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SLR-343YC3F

Rohm SemiconductorIn Stock: 1644SLR-343YC3F Datasheet

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WP710A10YC

KingbrightIn Stock: 2999WP710A10YC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SSL-LX3054YC are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Color: Yellow
• Mounting Type: Through Hole
• Package Format: T-1 or 3mm radial equivalent
• Voltage Range: 2.0V to 2.1V forward voltage
• Current Rating: 20mA test current
• Wavelength Range: 585nm to 592nm peak wavelength
• Lens Transparency: Clear or diffused acceptable
• RoHS3 Compliance: Required

Grouping Logic:

Group A - Direct Equivalents (Yellow, Clear Lens, Active Status): Parts meeting all primary criteria with active product status and matching lens transparency.

Group B - Functional Equivalents (Yellow, Diffused Lens, Active Status): Parts with yellow color and active status but diffused lens transparency, acceptable where lens color does not impact circuit function.

Group C - Legacy Equivalents (Yellow, Not For New Designs): Parts meeting electrical parameters but marked "Not For New Designs," suitable only for replacement in existing production or maintenance scenarios.

Group D - Non-Equivalent (Orange Color): Parts listed in original substitute data but excluded from primary recommendation due to color mismatch (orange vs. yellow).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Group A (Direct Equivalents):

WP710A10YC (Kingbright) is the preferred substitute for new designs and production replacement. This part maintains active product status, matches the SSL-LX3054YC in color (yellow), lens transparency (clear), forward voltage (2.1V), test current (20mA), and package format (T-1). The wavelength peak of 590nm falls within acceptable tolerance of the 585nm specification. Height maximum of 5.90mm exceeds the original 5.25mm specification by 0.65mm; verify mechanical clearance in the target application. Inventory availability of 2910 units supports production continuity.

LTL1CHKSKNN (Lite-On Inc.) qualifies as a secondary direct equivalent with active product status. Forward voltage of 2.05V and test current of 20mA align with circuit requirements. The 320mcd brightness rating significantly exceeds the 90mcd specification; this higher luminous intensity is acceptable in applications where brightness margin is beneficial. Viewing angle of 45° is wider than the 30° specification. Height maximum of 5.20mm is within 0.05mm of the original specification, providing superior mechanical compatibility. Inventory of 1500 units is available.

Secondary Recommendation - Group B (Functional Equivalent with Diffused Lens):

151031YS06000 (Würth Elektronik, WL-TMRC Series) is acceptable where diffused lens transparency does not compromise circuit function. This part maintains active product status and yellow color. Forward voltage of 2.0V and test current of 20mA are compatible with the original design. The 110mcd brightness rating exceeds the 90mcd specification. Wavelength peak of 592nm is within acceptable tolerance. The 60° viewing angle is significantly wider than the 30° specification; this characteristic is suitable for applications requiring broader light distribution. Height maximum of 5.55mm exceeds the original by 0.30mm. Inventory of 2929 units is available.

Legacy Recommendation - Group C (Not For New Designs):

SLR-343YC3F (Rohm Semiconductor, SLR343 Series) is restricted to replacement applications in existing production or maintenance scenarios only. This part is marked "Not For New Designs" and carries legacy product status. Forward voltage of 2.1V matches the original specification. However, the test current of 10mA is half the original 20mA specification, indicating lower brightness capability. The 16mcd rating is substantially below the 90mcd requirement. This part is suitable only for direct replacement in circuits already designed and validated with this component.

Excluded from Recommendation:

SLR-342DC3F (Rohm Semiconductor) is excluded due to color mismatch (orange vs. yellow). Although this part appears in the original substitute list, the orange wavelength of 605nm does not meet the yellow color requirement of the SSL-LX3054YC application.

Frequently Asked Questions (FAQ)

Q1: Can WP710A10YC be used as a direct replacement for SSL-LX3054YC without circuit modification?

A: WP710A10YC is electrically compatible with SSL-LX3054YC. Both parts operate at 2.1V forward voltage with 20mA test current and yellow color. Mechanical verification is required: WP710A10YC height maximum is 5.90mm compared to 5.25mm for SSL-LX3054YC. Confirm that the additional 0.65mm height does not exceed available PCB clearance or enclosure constraints. No circuit modification is required if mechanical fit is acceptable.

Q2: What is the brightness difference between SSL-LX3054YC (90mcd) and LTL1CHKSKNN (320mcd)?

A: LTL1CHKSKNN provides 3.56 times greater luminous intensity than SSL-LX3054YC. This higher brightness is acceptable in applications where increased light output is beneficial or neutral. If the original design relies on brightness limiting for specific visual indication levels, circuit current limiting resistor values may require adjustment to maintain intended brightness. Verify that the higher brightness does not create unintended visual effects in the target application.

Q3: Why is 151031YS06000 listed as a substitute if it has a diffused lens instead of clear?

A: 151031YS06000 meets all electrical parameters (yellow color, 2.0V forward voltage, 20mA test current, 585nm to 592nm wavelength range) and maintains active product status. The diffused lens transparency affects light distribution characteristics but does not impact electrical function. Diffused lenses scatter light over a wider viewing angle (60° vs. 30°), making this part suitable for applications where broader light distribution is acceptable or beneficial. Use this part only if the circuit design does not require the narrow 30° viewing angle of the original SSL-LX3054YC.

Q4: Can SLR-343YC3F be used in new product designs?

A: No. SLR-343YC3F is marked "Not For New Designs" and carries legacy product status. This part is restricted to replacement applications in existing production runs or field maintenance of products already validated with this component. For new designs, use WP710A10YC or LTL1CHKSKNN, both of which maintain active product status.

Q5: What are the key parameters that determine if a substitute part is acceptable?

A: Acceptable substitute parts must meet these criteria: (1) Yellow color, (2) Through-hole mounting type, (3) T-1 or 3mm radial package format, (4) Forward voltage between 2.0V and 2.1V, (5) Test current of 20mA, (6) Peak wavelength between 585nm and 592nm, (7) ROHS3 compliance. Brightness (mcd), viewing angle, and lens transparency may vary within application-specific tolerances. Mechanical dimensions (height, diameter) must be verified against available PCB and enclosure clearance.

Q6: Is there a brightness difference between clear and diffused yellow lenses?

A: Clear and diffused lenses have different optical characteristics but identical electrical function. Clear lenses concentrate light into a narrower beam with higher intensity in the viewing angle direction. Diffused lenses scatter light over a wider area with lower peak intensity. The choice between clear and diffused depends on the application's visual indication requirements, not electrical compatibility. Both lens types are acceptable substitutes if the circuit design accommodates the different light distribution patterns.

Q7: What inventory considerations should guide substitute part selection?

A: Current inventory levels are: SSL-LX3054YC (930 units), WP710A10YC (2910 units), LTL1CHKSKNN (1500 units), 151031YS06000 (2929 units), and SLR-343YC3F (1618 units). For production continuity, WP710A10YC and 151031YS06000 offer the highest stock levels. For immediate availability with minimal mechanical risk, LTL1CHKSKNN provides the closest height match (5.20mm vs. 5.25mm) with 1500 units in stock.