SM1206UYC Yellow LED 1206 SMD - Equivalent & Substitute Parts

Part Overview

The SM1206UYC is an active yellow LED indicator manufactured by Bivar Inc., designed for discrete indication applications in 1206 (3216 Metric) surface mount packages. This component operates at a forward voltage of 2.1V with a test current of 20mA and delivers 70mcd luminous intensity at a dominant wavelength of 592nm. The part is ROHS3 compliant and available in Tape & Reel packaging with 852 units currently in stock.

Substitute parts are identified when they maintain compatibility across critical electrical parameters (forward voltage, test current, package dimensions, and mounting type) while meeting the same environmental and compliance standards. Alternative sources ensure supply chain continuity and design flexibility without requiring circuit modifications.

Substiute Parts

SM1206UYC

Bivar Inc.In Stock: 865SM1206UYC Datasheet

Current PartRFQ

SML-LX1206YC-TR

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM1206UYC is determined by strict alignment with the following parameters:

Critical Substitution Parameters:

• Package type: 1206 (3216 Metric) surface mount only
• Color: Yellow indication
• Lens transparency: Clear
• Forward voltage (Vf): Within acceptable circuit design tolerance (2.0V to 2.1V range)
• Test current: 20mA standard
• Physical dimensions: 3.20mm L x 1.60mm W maximum
• Height: 1.10mm maximum
• RoHS3 compliance: Required

Secondary Compatibility Parameters:

• Mounting type: Surface Mount
• Wavelength range: Yellow spectrum (590nm to 593nm)
• Regulatory compliance: ROHS3 and EAR99 classification

The substitute part SML-LX1206YC-TR (Lumex Opto/Components Inc.) meets all critical parameters within acceptable engineering tolerances for direct substitution in equivalent applications.

Parameter Comparison

Engineering Selection Recommendations

SM1206UYC (Bivar Inc.) - Primary Selection:

• Active product status with confirmed supply (852 units in stock)
• ROHS3 compliant and EAR99 classified
• Higher luminous intensity (70mcd) suitable for applications requiring greater visibility
• MSL 4 rating requires standard moisture control during storage and assembly

SML-LX1206YC-TR (Lumex Opto/Components Inc.) - Substitute Selection:

• Active product status with higher inventory availability (3056 units in stock)
• ROHS3 compliant and EAR99 classified
• Forward voltage 2.0V is compatible with 2.1V design specifications (0.1V tolerance acceptable in most indicator circuits)
• MSL 3 rating provides extended moisture protection (168 hours vs. 72 hours)
• Lower luminous intensity (39mcd) suitable for applications where reduced brightness is acceptable or preferred
• REACH Unaffected status provides additional regulatory clarity

Both parts are suitable for direct substitution in 1206 surface mount yellow LED indication circuits. Selection between them depends on luminous intensity requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can SML-LX1206YC-TR replace SM1206UYC in existing designs without modification?

A: Yes. Both parts share identical package dimensions (3.20mm L x 1.60mm W x 1.10mm H), mounting type (surface mount), and electrical test conditions (20mA). The forward voltage difference (2.0V vs. 2.1V) is within acceptable tolerance for standard LED indicator circuits. No PCB layout or schematic changes are required.

Q: What is the significance of the millicandela rating difference (70mcd vs. 39mcd)?

A: Millicandela rating indicates luminous intensity. The SM1206UYC delivers 70mcd while the SML-LX1206YC-TR delivers 39mcd at 20mA test current. This difference affects perceived brightness. Applications requiring maximum visibility should use the SM1206UYC. Applications with brightness constraints or where reduced intensity is acceptable can use the SML-LX1206YC-TR.

Q: Are there differences in moisture sensitivity between these parts?

A: Yes. The SM1206UYC has MSL 4 (72-hour floor life), while the SML-LX1206YC-TR has MSL 3 (168-hour floor life). MSL 3 provides extended protection against moisture absorption. Both require standard moisture control during storage and assembly. The SML-LX1206YC-TR offers more favorable handling conditions.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both SM1206UYC and SML-LX1206YC-TR are ROHS3 compliant and classified as EAR99. The SML-LX1206YC-TR additionally carries REACH Unaffected status. Both are suitable for applications with equivalent regulatory requirements.

Q: What is the viewing angle difference between these parts?

A: The SM1206UYC has a 140° viewing angle while the SML-LX1206YC-TR has a 130° viewing angle. This 10° difference is minor and does not affect substitution suitability for standard indicator applications. Both provide wide-angle visibility typical of 1206 LED packages.

Q: Can I use these parts interchangeably in production?

A: Yes, with inventory management consideration. Both parts are active products with identical package specifications and compatible electrical parameters. Production can transition between sources based on availability and cost. The forward voltage tolerance (2.0V to 2.1V) is standard in LED circuit design and does not require design changes.