SM1206YC LED Equivalent & Substitute Parts

Part Overview

The SM1206YC is an active-status yellow LED indication component manufactured by Bivar Inc., configured as a standard discrete surface-mount device in 1206 (3216 Metric) package. This component is RoHS3 compliant with 877 units currently in inventory. Substitute parts are necessary when primary stock availability changes, when design revisions require alternative manufacturer specifications, or when procurement sourcing strategies necessitate qualified equivalents meeting the same electrical and mechanical parameters.

Substiute Parts

SM1206YC

Bivar Inc.In Stock: 920SM1206YC Datasheet

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LTST-C150AKT

LITEONIn Stock: 16271LTST-C150AKT Datasheet

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LTST-C150YKT

Lite-On Inc.In Stock: 60927LTST-C150YKT Datasheet

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LTST-C190KFKT

Lite-On Inc.In Stock: 68188LTST-C190KFKT Datasheet

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LTST-C190YKT

Lite-On Inc.In Stock: 143971LTST-C190YKT Datasheet

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SML-LX1206YC-TR

Lumex Opto/Components Inc.In Stock: 3121SML-LX1206YC-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified based on the following critical parameters that determine substitution eligibility:

Primary Grouping Criteria:

• Package / Case: 1206 (3216 Metric) or smaller compatible packages
• Mounting Type: Surface Mount
• Color: Yellow (primary group)
• Voltage - Forward (Vf) (Typ): 2V to 2.1V range
• Current - Test: 10mA to 20mA
• RoHS Status: ROHS3 Compliant

Qualified Substitute Categories:

1. Same-Package Yellow LEDs (1206): Parts maintaining identical 1206 package dimensions with yellow wavelength specification
2. Smaller-Package Yellow LEDs (0603): Parts with reduced 0603 package footprint, requiring board layout accommodation but maintaining yellow wavelength
3. Alternate-Color Same-Package LEDs (1206): Parts with identical 1206 package and forward voltage specifications but different color options

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and RoHS3 compliance, qualifying them for applications requiring the SM1206YC.

Tier 1 - Direct Package Substitutes (1206 Same-Size): LTST-C150YKT and SML-LX1206YC-TR are direct 1206 package equivalents. Both maintain identical board footprint compatibility and mounting envelope. LTST-C150YKT operates at 2.1V forward voltage with 10mA test current and 6mcd brightness equivalent to the primary part. SML-LX1206YC-TR maintains 2V forward voltage and 20mA test current specifications with enhanced brightness at 39mcd.

Tier 2 - Alternate-Color Same-Package (1206): LTST-C150AKT provides amber color indication within the same 1206 package footprint, suitable when yellow wavelength is not functionally required. It operates at 2.1V forward voltage with identical mounting envelope.

Tier 3 - Smaller Package Alternatives (0603): LTST-C190YKT and LTST-C190KFKT use the 0603 package, reducing board space requirements but requiring design layout revision. Both maintain surface-mount compatibility and active product status. LTST-C190YKT preserves yellow color at 588nm wavelength with 2.1V operation. LTST-C190KFKT provides orange indication at 605nm with significantly higher brightness (90mcd).

Frequently Asked Questions (FAQ)

Q: Can LTST-C150YKT directly replace SM1206YC without board redesign? A: Yes. Both parts share identical 1206 (3216 Metric) package dimensions, mounting envelope, and surface-mount compatibility. The 2.1V forward voltage and 10mA test current fall within acceptable circuit design margins relative to the primary part's 2V and 20mA specifications.

Q: What is the primary difference between the yellow LED substitutes? A: LTST-C150YKT and SML-LX1206YC-TR both fit the 1206 package. LTST-C150YKT operates at 2.1V with 10mA test current and 6mcd brightness. SML-LX1206YC-TR maintains 2V operation with 20mA test current but delivers higher brightness at 39mcd. Selection depends on circuit current budgets and brightness requirements.

Q: Can the 0603 package parts (LTST-C190YKT or LTST-C190KFKT) be used as drop-in replacements? A: No. The 0603 package is significantly smaller than 1206 (1.60mm x 0.80mm versus 3.20mm x 1.60mm). Board redesign is required to accommodate the different footprint and land pattern. However, both 0603 parts maintain surface-mount compatibility and RoHS3 compliance.

Q: Is the amber LED (LTST-C150AKT) suitable for applications specifying yellow? A: No. LTST-C150AKT produces amber indication at 602nm wavelength, distinct from yellow specifications at 585-590nm. Selection of this part is limited to applications where amber wavelength provides functional equivalence to yellow indication.

Q: What are the brightness differences among substitute parts? A: SM1206YC provides 6mcd baseline. LTST-C150YKT and LTST-C190YKT maintain 6mcd equivalence. SML-LX1206YC-TR delivers 39mcd (6.5x brighter). LTST-C190KFKT provides 90mcd (15x brighter). Selection depends on visibility requirements and circuit current capacity.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry RoHS3 compliance certification, matching the primary SM1206YC component.