LS L29K-G1H2-1-Z Equivalent & Substitute Parts

Part Overview

The LS L29K-G1H2-1-Z is a red diffused LED in 0603 (1608 Metric) surface mount package manufactured by ams-OSRAM USA INC. This component operates at 1.8V forward voltage with a dominant wavelength of 630nm and provides 3.15mcd luminous intensity. The part carries automotive-grade qualification (AEC-Q101) and is RoHS3 compliant.

This part is designated as "Not For New Designs," indicating it has been superseded or is in end-of-life status. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where the original component specification must be maintained or where functionally compatible alternatives are acceptable.

Substiute Parts

LS L29K-G1H2-1-Z

ams-OSRAM USA INC.In Stock: 22782LS L29K-G1H2-1-Z Datasheet

Current PartRFQ

LTST-C193KRKT-2A

Lite-On Inc.In Stock: 6176LTST-C193KRKT-2A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the LS L29K-G1H2-1-Z is determined by the following critical parameters:

Package and Mounting Compatibility: Both the main part and substitute must use the 0603 (1608 Metric) surface mount package to ensure PCB footprint compatibility and automated assembly process alignment.

Electrical Characteristics: Forward voltage (Vf) and test current must be within acceptable operating ranges for the circuit design. The main part operates at 1.8V typical; substitute parts with forward voltage up to 1.9V remain compatible with standard LED circuit topologies.

Optical Properties: Color (red spectrum), wavelength range (629–630nm dominant wavelength), and luminous intensity (millicandela rating) determine functional equivalence for indication applications. Lens transparency (diffused versus clear) affects light distribution characteristics but does not prevent substitution in indication circuits.

Compliance and Quality Standards: RoHS3 compliance and automotive-grade qualification (AEC-Q101) establish the baseline for component reliability and regulatory acceptance.

The LTST-C193KRKT-2A from Lite-On Inc. qualifies as a substitute based on matching package type, surface mount configuration, red color specification, compatible forward voltage, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: The LS L29K-G1H2-1-Z is designated "Not For New Designs," making the LTST-C193KRKT-2A an appropriate substitute for ongoing production and support applications. The substitute part is in active product status with current manufacturing availability.

Compliance Alignment: Both parts maintain RoHS3 compliance and equivalent regulatory standing. The substitute does not carry explicit automotive-grade qualification in the provided data; however, it meets the same environmental and material compliance standards as the original part.

Electrical Compatibility: The 0.1V difference in forward voltage (1.8V versus 1.9V) is within standard LED circuit design tolerances and does not require circuit modification. Both parts operate at identical 2mA test current.

Optical Performance Differences: The LTST-C193KRKT-2A provides higher luminous intensity (6.5mcd versus 3.15mcd) and operates with a narrower viewing angle (130° versus 160°). The substitute features clear lens transparency instead of diffused. These differences affect light distribution characteristics and should be evaluated against specific application requirements for indication circuits.

Physical Dimensions: The substitute part is lower profile (0.35mm versus 0.65mm height) and marginally shorter (1.60mm versus 1.70mm length). These dimensions remain compatible with 0603 package footprints and do not present assembly or clearance issues.

Inventory and Availability: The substitute part (LTST-C193KRKT-2A) has current inventory availability (6092 pcs) compared to the original part's legacy status, supporting long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the LTST-C193KRKT-2A be used as a direct replacement for the LS L29K-G1H2-1-Z without circuit modifications?

A: Yes, for standard indication applications. Both parts share identical 0603 package footprints, surface mount configuration, and 2mA test current. The 0.1V forward voltage difference (1.8V to 1.9V) is within normal LED circuit design margins and does not require resistor or supply voltage adjustments.

Q: What is the impact of the lens transparency difference (diffused versus clear)?

A: Lens transparency affects light distribution. The original part (diffused) scatters light over a wider area, while the substitute (clear) produces more directional light output. For indication applications where light distribution is not critical, this difference is acceptable. Applications requiring specific light diffusion characteristics should evaluate this parameter against circuit requirements.

Q: Why is the substitute part brighter (6.5mcd versus 3.15mcd)?

A: Higher luminous intensity results from the clear lens design and manufacturing differences between manufacturers. In indication circuits with current-limiting resistors, the increased brightness does not create compatibility issues. Applications with brightness-sensitive designs should verify that the higher intensity does not exceed circuit specifications.

Q: Does the narrower viewing angle (130° versus 160°) affect substitution suitability?

A: The substitute's narrower viewing angle produces more directional light output. For indication applications where viewing angle is not a critical specification, this difference is acceptable. Applications requiring wide-angle light distribution should confirm that 130° viewing angle meets functional requirements.

Q: Are there compliance or qualification differences between the two parts?

A: Both parts are RoHS3 compliant. The original part carries AEC-Q101 automotive-grade qualification; the substitute's automotive qualification status is not specified in the provided data. For applications requiring explicit automotive qualification, this distinction should be verified with the manufacturer.

Q: What is the significance of the product status difference (Not For New Designs versus Active)?

A: The original part's "Not For New Designs" status indicates end-of-life or superseded status. The substitute's "Active" status confirms current manufacturing and ongoing availability, supporting long-term supply chain reliability for production and maintenance applications.

Q: Is the lower profile height (0.35mm versus 0.65mm) of the substitute part a concern?

A: No. Both parts conform to 0603 package specifications, and the height difference does not affect PCB assembly, clearance, or electrical performance. The lower profile of the substitute may provide advantages in space-constrained designs.