LED SM3527UWDW01 Equivalent & Substitute Parts

Part Overview

The SM3527UWDW01 is a surface-mount LED from Bivar Inc. in the SM3527 series, featuring warm white 3000K color temperature. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part delivers 10 lm typical output at 30mA forward current with a forward voltage of 3.15V and 120° viewing angle in a compact 3528 metric package (1411).

Substiute Parts

SM3527UWDW01

Bivar Inc.In Stock: 1095SM3527UWDW01 Datasheet

Current PartRFQ

L128-3080CA3500001

LumiledsIn Stock: 1219L128-3080CA3500001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SM3527UWDW01 is determined by the following critical parameters:

Color Temperature Match: Both the main part and substitute must operate at 3000K warm white color temperature to maintain consistent lighting characteristics in the application.

Package Compatibility: The 1411 (3528 metric) surface-mount package is the primary mechanical constraint. Substitute parts must use identical or compatible package dimensions to ensure PCB layout compatibility without redesign.

Viewing Angle: The 120° viewing angle is a key optical parameter. Substitute parts must maintain this specification to preserve beam distribution characteristics.

CRI (Color Rendering Index): A CRI of 80 is specified for the main part. Substitute parts meeting or exceeding this value maintain color fidelity requirements.

Electrical Operating Range: Forward voltage (Vf) and current ratings define the electrical interface. Substitutes must operate within compatible voltage and current ranges to function with existing driver circuits.

Compliance Standards: RoHS3 compliance and EAR99 classification are mandatory for regulatory and export requirements.

The L128-3080CA3500001 from Lumileds qualifies as a substitute based on matching color temperature (3000K), package type (1411/3528 metric), viewing angle (120°), CRI (80), and compliance certifications (ROHS3, EAR99).

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SM3527UWDW01 is classified as obsolete, while the L128-3080CA3500001 maintains active product status. Active status ensures continued availability, technical support, and supply chain reliability for new designs and ongoing production requirements.

Compliance Alignment: Both parts maintain ROHS3 compliance and EAR99 classification, satisfying regulatory and export requirements without modification to procurement or documentation procedures.

Optical and Thermal Characteristics: Both parts deliver identical color temperature (3000K), CRI (80), and viewing angle (120°), ensuring optical performance consistency in lighting applications.

Electrical Interface: The L128-3080CA3500001 operates at 3V forward voltage compared to 3.15V for the SM3527UWDW01, representing a 0.15V reduction. This difference is within typical LED forward voltage tolerance ranges and compatible with standard LED driver circuits designed for 3V to 3.3V operation.

Moisture Sensitivity: The substitute part features MSL 3 (168 hours) compared to MSL 4 (72 hours) for the main part, indicating improved moisture tolerance and reduced risk during storage and handling.

Package Dimensions: The substitute part height is reduced to 0.030" (0.75mm) versus 0.043" (1.10mm), providing a lower profile component. Width increases marginally from 2.70mm to 2.80mm, remaining within standard 3528 metric package tolerance.

Frequently Asked Questions (FAQ)

Q: Can the L128-3080CA3500001 directly replace the SM3527UWDW01 on existing PCBs?

A: Yes. Both parts use the 1411 (3528 metric) surface-mount package with compatible footprints. The L128-3080CA3500001 features a lower seated height (0.75mm vs. 1.10mm) and marginally wider width (2.80mm vs. 2.70mm), both within standard package tolerance. PCB layout compatibility is maintained without redesign.

Q: What are the electrical differences between these parts?

A: The L128-3080CA3500001 operates at 3V forward voltage versus 3.15V for the SM3527UWDW01. The substitute part is rated for 120mA test current compared to 30mA for the main part. Both specifications are compatible with standard LED driver circuits. The 0.15V difference falls within typical LED forward voltage variation.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the SM3527UWDW01 and L128-3080CA3500001 are ROHS3 compliant and classified as EAR99 for export purposes. No changes to compliance documentation or procurement procedures are required.

Q: Why does the substitute part have higher lumen output?

A: The L128-3080CA3500001 delivers 54 lm at 120mA test current versus 10 lm at 30mA for the SM3527UWDW01. These measurements are taken at different operating currents. The lumens-per-watt efficiency (150 lm/W vs. 106 lm/W) reflects the LUXEON 2835 platform's advanced LED technology compared to the older SM3527 series.

Q: Is the color temperature identical between both parts?

A: Yes. Both parts operate at 3000K warm white color temperature with CRI 80, ensuring identical color characteristics and rendering performance in lighting applications.

Q: What is the significance of the MSL rating difference?

A: The L128-3080CA3500001 features MSL 3 (168 hours) compared to MSL 4 (72 hours) for the SM3527UWDW01. MSL 3 indicates improved moisture tolerance, reducing risk of moisture-induced failures during storage and handling. This represents an advantage for supply chain management and component reliability.

Q: Are there any circuit design modifications required for substitution?

A: No circuit modifications are required. Both parts operate within compatible voltage and current ranges for standard LED driver circuits. The 0.15V forward voltage difference is within normal LED tolerance and does not necessitate driver recalibration.