SML-LXFT1206SOC-TR Orange LED 1206 SMD Equivalent & Substitute Parts

Part Overview

The SML-LXFT1206SOC-TR is an orange LED indication component manufactured by Lumex Opto/Components Inc. in 1206 (3216 Metric) surface mount package format. This discrete 2V LED operates at 20mA test current with 75mcd brightness and 140° viewing angle, featuring a clear rectangular lens with flat top design. The component is Active product status and ROHS3 compliant.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or inventory depletion. Alternative manufacturers offer functionally equivalent orange LED solutions in the same 1206 package with comparable electrical and mechanical specifications.

Substiute Parts

SML-LXFT1206SOC-TR

Lumex Opto/Components Inc.In Stock: 1234SML-LXFT1206SOC-TR Datasheet

Current PartRFQ

APT3216SECK

KingbrightIn Stock: 2221APT3216SECK Datasheet

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APT3216SECK/J4-PRV

KingbrightIn Stock: 15902APT3216SECK/J4-PRV Datasheet

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APT3216SYCK

KingbrightIn Stock: 4448APT3216SYCK Datasheet

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APT3216SYCK/J3-PRV

KingbrightIn Stock: 20211APT3216SYCK/J3-PRV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SML-LXFT1206SOC-TR are identified based on strict parameter alignment within the 1206 SMD LED category. The substitution logic is based on the following critical parameters:

Primary Substitution Criteria:

• Package format: 1206 (3216 Metric) surface mount
• Lens type: Clear, rectangular with flat top
• Mounting: Surface mount technology
• Physical dimensions: 3.20mm L x 1.60mm W, 0.75mm max height
• Regulatory compliance: ROHS3 compliant, REACH unaffected

Secondary Compatibility Parameters:

• Forward voltage (Vf): 2V to 2.2V range acceptable for standard circuit designs
• Test current: 20mA reference condition
• Wavelength range: 601nm to 611nm peak (orange spectrum)

Substitute Parts Identified:

1. APT3216SECK and APT3216SECK/J4-PRV (Kingbright) - Orange LED, 2.1V to 2.2V Vf, 180mcd to 550mcd brightness
2. APT3216SYCK and APT3216SYCK/J3-PRV (Kingbright) - Yellow LED, 2V Vf, 150mcd to 320mcd brightness

The yellow variants (APT3216SYCK series) are listed as substitutes based on the provided input data, though they represent a color variation from the primary orange specification.

Parameter Comparison

Engineering Selection Recommendations

For Orange LED Applications (Direct Substitution):

The APT3216SECK and APT3216SECK/J4-PRV parts from Kingbright are direct functional equivalents to the SML-LXFT1206SOC-TR. Both maintain the same 1206 package footprint, clear lens design, and surface mount compatibility. The forward voltage range (2.1V to 2.2V) is within acceptable tolerance for standard LED circuit designs operating at 2V nominal. All parts maintain ROHS3 compliance and identical MSL ratings.

APT3216SECK/J4-PRV offers significantly higher brightness (550mcd versus 75mcd), suitable for applications requiring enhanced visibility. APT3216SECK provides intermediate brightness (180mcd) with lower forward voltage (2.1V).

For Yellow LED Applications (Color Variant Substitution):

The APT3216SYCK and APT3216SYCK/J3-PRV parts represent a color variation from the primary orange specification. These yellow LEDs (590nm dominant wavelength) maintain identical package, mounting, and compliance characteristics. Selection of yellow variants requires confirmation that the application design permits color substitution.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels (MSL 3, 168 hours). No additional handling or storage modifications are required when substituting between listed parts.

Frequently Asked Questions (FAQ)

Q1: Can APT3216SECK parts directly replace SML-LXFT1206SOC-TR in existing PCB designs?

A: Yes. Both parts share identical 1206 (3216 Metric) package dimensions (3.20mm L x 1.60mm W, 0.75mm max height), clear rectangular lens design, and surface mount footprint. No PCB layout modifications are required. Forward voltage differences (2V to 2.2V) are within standard LED circuit tolerance ranges.

Q2: What is the difference between APT3216SECK and APT3216SECK/J4-PRV?

A: Both parts are functionally equivalent orange LEDs in 1206 package. The "/J4-PRV" designation indicates packaging variant (Tape & Reel). Electrical and optical specifications are identical. Selection depends on procurement and assembly requirements.

Q3: Are the yellow LED variants (APT3216SYCK series) suitable replacements?

A: The APT3216SYCK and APT3216SYCK/J3-PRV parts maintain identical package, mounting, and compliance specifications. However, they represent a color change from orange (610nm) to yellow (590nm). Substitution is only appropriate if the application design permits color variation in the visual indication function.

Q4: What are the brightness differences between substitute parts?

A: The SML-LXFT1206SOC-TR operates at 75mcd. Kingbright substitutes range from 150mcd to 550mcd. Higher brightness values provide enhanced visibility but may require circuit current limiting adjustments if the application is brightness-sensitive. All parts operate at the same 20mA test current reference.

Q5: Do all substitute parts meet the same regulatory requirements?

A: Yes. All listed substitute parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 3 (168 hours) moisture sensitivity ratings. No additional compliance documentation or handling procedures are required when substituting between parts.

Q6: What is the viewing angle difference between the main part and substitutes?

A: The SML-LXFT1206SOC-TR has a 140° viewing angle, while Kingbright APT3216 series parts have 120° viewing angles. This represents a 20° reduction in horizontal light distribution. Applications requiring wide-angle indication should account for this specification difference.

Q7: Are there inventory considerations when selecting substitutes?

A: Yes. Current inventory levels vary: SML-LXFT1206SOC-TR (1,172 pcs), APT3216SECK (2,190 pcs), APT3216SECK/J4-PRV (15,851 pcs), APT3216SYCK (4,400 pcs), APT3216SYCK/J3-PRV (20,128 pcs). APT3216SECK/J4-PRV and APT3216SYCK/J3-PRV offer the highest available stock levels.