SSL-LX3044SIC Equivalent & Substitute Parts

Part Overview

The SSL-LX3044SIC is a red LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This T-1 (3mm) discrete LED operates at a forward voltage of 2.1V with a test current of 20mA, delivering 1800mcd luminous intensity. The component features a clear, colorless lens with a round domed top and a 30° viewing angle. Product status is Active with ROHS3 compliance and REACH unaffected classification. Substitute parts are identified to address inventory availability, extended lead times, or design flexibility requirements while maintaining functional equivalence within specified electrical and mechanical tolerances.

Substiute Parts

SSL-LX3044SIC

Lumex Opto/Components Inc.In Stock: 970SSL-LX3044SIC Datasheet

Current PartRFQ

WP710A10SECK/J3

KingbrightIn Stock: 21556WP710A10SECK/J3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SSL-LX3044SIC are identified based on strict equivalence across the following critical parameters:

Physical & Mechanical Compatibility:

• Lens size: 3mm, T-1 form factor
• Mounting type: Through hole radial configuration
• Package case: Radial lead arrangement
• Lens style: Round with domed top
• Lens color: Colorless

Optical & Functional Compatibility:

• Color: Red spectrum
• Lens transparency: Clear
• Wavelength range: Peak wavelength within red LED spectrum (625nm–640nm acceptable)
• Millicandela rating: Minimum 1600mcd (≥89% of main part brightness)
• Viewing angle: 30°–34° (acceptable variance for indication applications)

Electrical Compatibility:

• Forward voltage (Vf): 2.1V–2.2V (acceptable tolerance for series resistor adjustment)
• Test current: 20mA (standard operating condition)

Regulatory & Compliance:

• RoHS3 compliance required
• REACH unaffected status required
• ECCN: EAR99 classification

The WP710A10SECK/J3 from Kingbright meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The WP710A10SECK/J3 is electrically and mechanically equivalent to the SSL-LX3044SIC for through-hole red LED indication applications. Both components maintain Active product status with full ROHS3 compliance and REACH unaffected classification, ensuring regulatory alignment across current and future supply chains.

Electrical Equivalence: Forward voltage differential of 0.1V (2.1V vs. 2.2V) is within standard tolerance for series resistor-based current limiting circuits. At 20mA test current, this variance requires minimal circuit adjustment and does not affect functional performance in indication applications.

Optical Performance: The WP710A10SECK/J3 delivers 1600mcd versus 1800mcd on the SSL-LX3044SIC, representing 89% brightness retention. For indication-only applications, this brightness level remains adequate. The wider 34° viewing angle of the substitute part provides improved visibility across a broader angular range compared to the 30° specification of the main part.

Physical Compatibility: Both components share identical lens size (3mm T-1), diameter (2.90mm), radial package configuration, and through-hole mounting type. Height difference of 1.30mm (4.60mm vs. 5.90mm) requires verification of available PCB clearance in the target application. This dimension must be confirmed against mechanical design constraints before final selection.

Compliance & Supply: Both parts carry equivalent regulatory certifications (ROHS3, REACH unaffected, EAR99). The WP710A10SECK/J3 maintains significantly higher inventory availability (21,525 pcs vs. 926 pcs), supporting extended production runs and reducing supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can the WP710A10SECK/J3 be used as a direct drop-in replacement for the SSL-LX3044SIC?

A: The WP710A10SECK/J3 is mechanically and electrically compatible for through-hole PCB applications. The primary consideration is the 1.30mm height difference (5.90mm vs. 4.60mm). Verify that available clearance above the component accommodates the taller profile. If clearance is adequate, the part functions as a direct replacement without circuit modification.

Q: What circuit adjustments are required due to the 0.1V forward voltage difference?

A: The 0.1V difference between 2.1V and 2.2V is negligible in series resistor-based LED circuits. Standard current-limiting resistor calculations remain valid. If the original circuit uses a fixed resistor value, the WP710A10SECK/J3 will draw approximately 5% less current at identical resistor values, resulting in proportionally reduced brightness. For applications requiring exact brightness matching, recalculate the series resistor using the 2.2V specification.

Q: Is the 1600mcd brightness of the substitute part sufficient for indication applications?

A: The 1600mcd rating represents 89% of the main part's 1800mcd specification. For standard indication applications (status signaling, panel indicators, circuit diagnostics), this brightness level is functionally adequate. Applications requiring maximum brightness or operation in high ambient light conditions should retain the SSL-LX3044SIC.

Q: How do the viewing angles compare between these parts?

A: The SSL-LX3044SIC specifies 30° viewing angle; the WP710A10SECK/J3 specifies 34°. The wider viewing angle of the substitute part provides improved visibility across a broader angular range, which is advantageous for applications where the LED is viewed from multiple angles. This represents a functional improvement rather than a limitation.

Q: Are both parts compliant with current RoHS and REACH regulations?

A: Both the SSL-LX3044SIC and WP710A10SECK/J3 carry ROHS3 compliance and REACH unaffected status. Both are classified as EAR99 for export control purposes. Regulatory equivalence is confirmed for applications requiring these certifications.

Q: What is the wavelength difference between these parts?

A: The SSL-LX3044SIC specifies 636nm peak wavelength; the WP710A10SECK/J3 specifies 640nm peak wavelength. Both wavelengths fall within the standard red LED spectrum (620nm–650nm). The 4nm difference is imperceptible to human vision and does not affect functional performance in indication applications.

Q: Which part should be selected for new designs?

A: For new designs, either part is acceptable based on availability and mechanical constraints. The WP710A10SECK/J3 offers significantly higher inventory availability and a wider viewing angle. The SSL-LX3044SIC provides slightly higher brightness and a more compact height profile. Selection should prioritize the part that best matches mechanical clearance requirements and supply chain availability for the intended production volume.