SSL-LX203CSYT Equivalent & Substitute Parts

Part Overview

The SSL-LX203CSYT is a yellow LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This discrete 2.1V radial LED features a 2mm T-2 ceramic stem package with a clear domed lens. The product is currently classified as obsolete, making identification of functionally equivalent substitute parts essential for design continuity and procurement planning. Active alternative components with compatible electrical characteristics and similar optical performance are available to support ongoing production and maintenance requirements.

Substiute Parts

SSL-LX203CSYT

Lumex Opto/Components Inc.In Stock: 761SSL-LX203CSYT Datasheet

Current PartRFQ

SSL-LX507DT3SYT

Lumex Opto/Components Inc.In Stock: 816SSL-LX507DT3SYT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SSL-LX203CSYT are identified based on strict alignment with the following critical parameters:

Electrical Compatibility:

• Forward voltage (Vf) of 2.1V
• Test current of 20mA
• Peak wavelength of 590nm (yellow spectrum)

Mechanical Compatibility:

• Through-hole radial mounting configuration
• Clear lens transparency
• Yellow lens color

Regulatory Compliance:

• ROHS3 compliance
• REACH unaffected status
• EAR99 ECCN classification

The SSL-LX507DT3SYT qualifies as a substitute part because it maintains identical electrical parameters (2.1V forward voltage, 20mA test current, 590nm peak wavelength) and shares the same mounting type, lens color, and transparency. While physical dimensions and optical intensity differ, these variations do not preclude functional substitution in applications where the component serves as a yellow indication LED.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The SSL-LX203CSYT is classified as obsolete. The SSL-LX507DT3SYT is an active product from the same manufacturer, ensuring continued availability and supply chain reliability for new designs and ongoing production support.

Electrical Equivalence

Both components operate at identical forward voltage (2.1V) and test current (20mA) specifications, with matching peak wavelength (590nm). This electrical equivalence ensures compatibility with existing circuit designs without modification to current-limiting resistor values or power supply specifications.

Compliance Status

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing standards. The EAR99 ECCN classification is consistent across both components.

Physical Integration Considerations

The SSL-LX507DT3SYT features larger physical dimensions (5.00mm diameter, 7.00mm maximum height) compared to the SSL-LX203CSYT (2.00mm diameter, 2.50mm maximum height). PCB layout modifications may be required to accommodate the larger lens and lead configuration. The substitute part provides higher optical intensity (200mcd versus 70mcd) and a slightly narrower viewing angle (140° versus 160°).

Frequently Asked Questions (FAQ)

Q: Can the SSL-LX507DT3SYT directly replace the SSL-LX203CSYT without circuit modifications?

A: Yes, from an electrical standpoint. Both components share identical forward voltage (2.1V) and test current (20mA) specifications. Existing current-limiting resistor calculations and power supply configurations remain valid. However, PCB layout modifications are necessary due to differences in physical dimensions and lead spacing.

Q: What are the key differences between these two components?

A: The primary differences are physical size and optical intensity. The SSL-LX507DT3SYT is larger (5mm diameter versus 2mm) with higher brightness (200mcd versus 70mcd) and a slightly narrower viewing angle (140° versus 160°). Both maintain identical electrical parameters and wavelength characteristics.

Q: Why is the SSL-LX203CSYT listed as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation decisions. The SSL-LX507DT3SYT represents an active alternative from the same manufacturer with compatible electrical specifications.

Q: Are there any compliance concerns with using the substitute part?

A: No. Both components maintain ROHS3 compliance and REACH unaffected status. Regulatory requirements are satisfied by either component.

Q: What mounting considerations apply to the SSL-LX507DT3SYT?

A: Both components use through-hole radial mounting. The substitute part requires PCB holes and lead spacing compatible with its larger 5mm lens diameter and T-1 3/4 package configuration. Verify PCB layout clearances before implementation.

Q: Does the higher brightness of the SSL-LX507DT3SYT affect circuit operation?

A: No. Optical intensity is determined by the LED die and lens design, not by electrical parameters. The 200mcd rating of the substitute part operates at the same 20mA test current as the original 70mcd component. Circuit current and voltage relationships remain unchanged.