LED XLamp® MX-3S White SMD MX3SWT-A1-0000-0009B5

Part Overview

The CreeLED MX3SWT-A1-0000-0009B5 is a white LED XLamp® MX-3S surface mount component designed for lighting applications requiring high luminous efficiency. This part is classified as obsolete, making identification of compatible substitute components essential for ongoing production and maintenance requirements. The XLamp® MX-3S series delivers 84 lumens at 115mA test current with a forward voltage of 10.7V and 120° viewing angle in a compact 5.00mm x 5.00mm 2-SMD package.

Substiute Parts

MX3SWT-A1-0000-0009B5

CreeLED, Inc.In Stock: 937MX3SWT-A1-0000-0009B5 Datasheet

Current PartRFQ

MX3AWT-A1-0000-0009B5

CreeLED, Inc.In Stock: 771MX3AWT-A1-0000-0009B5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MX3SWT-A1-0000-0009B5 is evaluated based on the following critical parameters:

• Package Compatibility: Both parts must use 2-SMD, Gull Wing Exposed Pad configuration with identical 5.00mm × 5.00mm footprint and 1.48mm maximum height to ensure PCB assembly compatibility.
• Optical Performance: Viewing angle of 120° is maintained across both parts.
• Thermal Characteristics: Thermal resistance of 11°C/W is consistent, supporting equivalent thermal management in circuit designs.
• Luminous Output: Both parts deliver 84 lumens at their respective test currents, meeting brightness requirements.
• Compliance & Status: The substitute part MX3AWT-A1-0000-0009B5 is active and RoHS compliant, providing long-term supply assurance.

The primary electrical difference is the forward voltage and test current specification. The MX3AWT operates at 3.7V / 350mA versus the MX3SWT at 10.7V / 115mA. This difference requires circuit redesign to accommodate the lower voltage and higher current characteristics of the substitute part.

Parameter Comparison

Engineering Selection Recommendations

The MX3AWT-A1-0000-0009B5 is the designated substitute for the obsolete MX3SWT-A1-0000-0009B5 based on the following factors:

• Product Status: The MX3AWT is active and maintains long-term availability, whereas the MX3SWT is obsolete and subject to inventory depletion.
• Regulatory Compliance: The MX3AWT is RoHS compliant, meeting current environmental and regulatory requirements for electronic components in most jurisdictions.
• Physical Compatibility: Identical package footprint, height, and thermal characteristics ensure direct PCB placement without layout modifications.
• Optical Performance: Both parts deliver equivalent luminous output (84 lumens) and viewing angle (120°), maintaining optical system performance.

Critical Design Consideration: The substitute part operates at significantly different electrical parameters (3.7V / 350mA versus 10.7V / 115mA). Circuit redesign is required to accommodate the lower forward voltage and higher current draw. Power supply, current limiting, and thermal management must be re-evaluated for the substitute part's electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can the MX3AWT-A1-0000-0009B5 be used as a direct drop-in replacement for the MX3SWT-A1-0000-0009B5?

A: The MX3AWT is mechanically and thermally compatible due to identical package dimensions and thermal resistance. However, it is not electrically compatible without circuit modification. The substitute part requires a different power supply voltage (3.7V versus 10.7V) and operates at higher current (350mA versus 115mA). Existing current-limiting resistors and power supply configurations must be redesigned.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on: package type (2-SMD, Gull Wing Exposed Pad), footprint dimensions (5.00mm × 5.00mm), maximum height (1.48mm), thermal resistance (11°C/W), viewing angle (120°), and luminous output (84 lumens). Color (white) and mounting type (surface mount) must also match.

Q: Are there any compliance or regulatory differences between these parts?

A: The MX3AWT is RoHS compliant, whereas RoHS status is not specified for the MX3SWT. Both parts are REACH unaffected and classified as EAR99 for export control purposes. The MX3AWT's RoHS compliance provides regulatory assurance for new designs and applications subject to environmental directives.

Q: What is the impact of the different forward voltage specifications?

A: The MX3SWT operates at 10.7V typical forward voltage, while the MX3AWT operates at 3.7V. This 7V difference requires complete redesign of the LED drive circuit, including power supply selection, current limiting topology, and thermal management strategy. The higher current requirement (350mA versus 115mA) also impacts PCB trace sizing and power dissipation calculations.

Q: Are the luminous efficiency ratings comparable?

A: The MX3SWT delivers 68 lm/W at 115mA test current, while the MX3AWT delivers 65 lm/W at 350mA test current. Both parts achieve the same absolute luminous output (84 lumens) but at different operating points. The efficiency difference is 3 lm/W, which is within typical manufacturing variation for LED components.

Q: What packaging options are available for the substitute part?

A: The MX3AWT-A1-0000-0009B5 is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. The original MX3SWT packaging format is not specified in the provided data.