SSL-LX203CSOT Equivalent & Substitute Parts

Part Overview

The SSL-LX203CSOT is an orange LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This discrete 2V radial LED features a 2mm T-3/4 ceramic stem package with a clear, domed lens and 10mcd brightness rating. The product is classified as obsolete, necessitating identification of functionally equivalent active alternatives for ongoing design requirements and procurement continuity.

Substiute Parts

SSL-LX203CSOT

Lumex Opto/Components Inc.In Stock: 980SSL-LX203CSOT Datasheet

Current PartRFQ

WP4060ED

KingbrightIn Stock: 1101WP4060ED Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SSL-LX203CSOT is determined by the following critical parameters:

Primary Compatibility Criteria:

• Color specification: Orange
• Mounting type: Through Hole (radial configuration)
• Forward voltage: 2V nominal
• Test current: 20mA
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

Secondary Consideration Parameters:

• Lens transparency (clear vs. diffused affects light distribution)
• Millicandela rating (brightness level)
• Viewing angle (light emission pattern)
• Wavelength characteristics (peak and dominant wavelengths)
• Physical dimensions and lens size

The WP4060ED from Kingbright satisfies the primary compatibility criteria as an active product with matching voltage, current, color, and mounting specifications. Secondary parameters show variations in lens transparency, brightness, and viewing angle that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The WP4060ED qualifies as a functional substitute for the SSL-LX203CSOT based on matching electrical specifications (2V forward voltage, 20mA test current) and regulatory compliance (ROHS3 Compliant, REACH Unaffected). The WP4060ED holds active product status, ensuring ongoing availability and supply chain continuity.

Key differences require circuit-level evaluation:

Lens Transparency Difference: The SSL-LX203CSOT features a clear lens, while the WP4060ED employs a diffused lens. This affects light distribution characteristics and visual appearance in the application.

Brightness Variance: The SSL-LX203CSOT provides 10mcd brightness; the WP4060ED delivers 8mcd. Applications with strict brightness requirements must confirm acceptability of the 2mcd reduction.

Viewing Angle Reduction: The SSL-LX203CSOT offers 160° viewing angle; the WP4060ED provides 70° viewing angle. Applications requiring wide-angle light distribution must assess compatibility with the narrower emission pattern.

Wavelength Shift: Peak wavelength differs from 610nm to 627nm, representing a shift toward longer wavelengths within the orange spectrum. Visual color perception remains orange in both cases.

Selection of the WP4060ED is appropriate when the diffused lens, reduced brightness, and narrower viewing angle align with application requirements. Direct pin-compatible substitution is supported by matching radial through-hole mounting and identical forward voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can the WP4060ED directly replace the SSL-LX203CSOT in existing PCB designs?

A: Yes, the WP4060ED is pin-compatible for through-hole radial mounting. Both components operate at 2V forward voltage with 20mA test current. PCB footprints designed for radial lead through-hole components accommodate both parts. Physical dimension differences (SSL-LX203CSOT: 2.00mm diameter; WP4060ED: 3.30mm L x 2.40mm W) must be verified against available board space.

Q: What is the impact of the diffused lens on my application?

A: The diffused lens on the WP4060ED scatters light more broadly than the clear lens on the SSL-LX203CSOT, reducing peak intensity in the direct viewing direction but improving visibility from off-axis angles. Applications requiring concentrated light output in a specific direction should evaluate this characteristic against functional requirements.

Q: Does the 2mcd brightness difference affect circuit operation?

A: Brightness difference does not affect electrical circuit operation. Both components operate identically at 2V forward voltage and 20mA test current. Visual brightness perception differs; applications with human-visible indication requirements must confirm that 8mcd meets visibility standards for the intended environment and viewing distance.

Q: Are there compliance or regulatory differences between these parts?

A: Both the SSL-LX203CSOT and WP4060ED are ROHS3 Compliant and REACH Unaffected. No regulatory compliance differences exist. Both components carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications.

Q: What is the significance of the 160° versus 70° viewing angle difference?

A: Viewing angle defines the cone of light emission. The SSL-LX203CSOT's 160° angle provides wide-angle visibility; the WP4060ED's 70° angle concentrates light in a narrower cone. Applications requiring visibility from multiple angles or wide-angle indication should confirm that the 70° angle provides adequate coverage for the intended mounting orientation and viewing positions.

Q: Can I use the WP4060ED in applications where the SSL-LX203CSOT was previously specified?

A: Substitution is valid when application requirements accommodate the parameter differences: diffused lens operation, 8mcd brightness, and 70° viewing angle. Circuit-level electrical compatibility is confirmed. Mechanical fit must be verified against available PCB space and component clearance requirements.