LED AA3529 Yellow 590nm SMD Equivalent & Substitute Parts

Part Overview

The Kingbright AA3529SYS/L is a surface-mount yellow LED with a dominant wavelength of 590nm, designed for general illumination and indicator applications. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. The need for equivalent and substitute parts arises from supply chain considerations, inventory availability, and application-specific requirements where alternative manufacturers' components meet identical or compatible electrical and mechanical specifications.

Substiute Parts

AA3529SYS/L

KingbrightIn Stock: 853AA3529SYS/L Datasheet

Current PartRFQ

VLMY51Z1AA-GS08

Vishay Semiconductor Opto DivisionIn Stock: 2186VLMY51Z1AA-GS08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Kingbright AA3529SYS/L is determined by strict alignment of the following critical parameters:

Color and Wavelength: Both the main part and substitute must be yellow LEDs with a dominant wavelength of 590nm. The Vishay VLMY51Z1AA-GS08 specifies 590nm (585nm–594nm range), which falls within acceptable tolerance for yellow LED applications.

Mounting Type and Package Compatibility: Both components are surface-mount devices in 2-PLCC package configuration. The AA3529 uses a 2-PLCC supplier device package with dimensions 3.20mm × 2.80mm. The VLMY51Z1AA-GS08 is specified as 1414 (3535 Metric) with 2-PLCC supplier device package and dimensions 3.50mm × 3.50mm. While footprint dimensions differ slightly, both conform to 2-PLCC package standards.

Electrical Parameters: The AA3529 operates at 150mA test current with 3.6V forward voltage (Typ) and 150mA maximum current. The VLMY51Z1AA-GS08 operates at 140mA test current with 2.2V forward voltage (Typ) and 200mA maximum current. These differences reflect manufacturer-specific design but maintain functional compatibility in typical circuit applications.

Compliance and Certifications: Both parts are RoHS3 compliant, REACH unaffected, and carry identical MSL ratings (2A, 4 Weeks), ensuring equivalent handling and storage requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: The Kingbright AA3529SYS/L is the recommended primary component. It maintains Active product status, ensuring long-term availability and manufacturer support. Current inventory of 841 pieces provides immediate supply security.

Substitute Selection: The Vishay VLMY51Z1AA-GS08 is classified as Obsolete. While it meets the core substitution criteria of yellow color, 590nm wavelength, 2-PLCC package configuration, and identical compliance certifications (RoHS3, REACH unaffected, MSL 2A), its obsolete status indicates discontinued manufacturing and limited future availability. This component should be selected only when primary supply is exhausted and existing inventory (2082 pieces) is accessible.

Compliance Equivalence: Both components satisfy RoHS3 compliance and REACH unaffected requirements, making them suitable for applications with environmental regulatory constraints. Identical MSL ratings (2A, 4 Weeks) ensure equivalent moisture handling protocols during storage and assembly.

Electrical Performance Differences: The VLMY51Z1AA-GS08 exhibits significantly higher luminous efficiency (65 lm/W versus 11 lm/W) and greater luminous flux output (20lm versus 6lm at test conditions). Forward voltage differs substantially (2.2V versus 3.6V). These differences require circuit-level evaluation to confirm functional compatibility in specific applications.

Frequently Asked Questions (FAQ)

Q: Can the Vishay VLMY51Z1AA-GS08 directly replace the Kingbright AA3529SYS/L in existing designs?

A: Direct replacement requires circuit evaluation. Both components share yellow color (590nm wavelength), 2-PLCC package configuration, 120° viewing angle, and identical compliance certifications. However, the VLMY51Z1AA-GS08 has lower forward voltage (2.2V vs. 3.6V) and higher luminous output (20lm vs. 6lm). PCB layout compatibility is confirmed by 2-PLCC package equivalence, but current-limiting resistor values and power supply voltage must be recalculated based on the substitute's electrical characteristics.

Q: What are the package compatibility considerations?

A: The AA3529SYS/L is specified as 2-PLCC with dimensions 3.20mm × 3.80mm and 1.55mm seated height. The VLMY51Z1AA-GS08 is specified as 1414 (3535 Metric) with 2-PLCC supplier device package, dimensions 3.50mm × 3.50mm, and 1.40mm seated height. Both conform to 2-PLCC footprint standards. The dimensional differences (0.30mm in length and width, 0.15mm in height) are within typical PCB assembly tolerances for surface-mount components.

Q: Why is the Vishay component listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The VLMY51Z1AA-GS08 remains available through existing inventory (2082 pieces), but no new manufacturing is planned. This status affects long-term supply reliability and should influence component selection for new designs or high-volume production.

Q: Are the thermal characteristics equivalent?

A: No. The AA3529SYS/L has thermal resistance of 90°C/W, while the VLMY51Z1AA-GS08 has 50°C/W. The Vishay component dissipates heat more efficiently. In thermally constrained applications, the VLMY51Z1AA-GS08 may provide superior thermal performance, but this advantage must be weighed against its obsolete status.

Q: Do both components meet the same regulatory requirements?

A: Yes. Both the AA3529SYS/L and VLMY51Z1AA-GS08 are RoHS3 compliant and REACH unaffected. Both carry MSL rating 2A (4 Weeks), requiring identical moisture control during storage and assembly. ECCN and HTSUS classifications are identical (EAR99 and 8541.41.0000 respectively).

Q: What is the luminous efficiency difference, and does it affect substitution?

A: The VLMY51Z1AA-GS08 delivers 65 lm/W compared to the AA3529SYS/L at 11 lm/W—a 5.9× efficiency advantage. This reflects different LED chip designs and optical configurations. For applications where brightness is critical, the Vishay component provides superior light output per watt. For applications with fixed brightness requirements, the higher efficiency may allow reduced drive current, improving thermal performance and component lifespan.