MX3SWT-A1-R250-000AF7 Equivalent & Substitute Parts

Part Overview

The MX3SWT-A1-R250-000AF7 is a CreeLED XLamp® MX-3S warm white LED (3200K) in a 2-SMD surface mount package with exposed pad. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The part delivers 91 lm at 115mA forward current with a typical forward voltage of 10.7V and 120° viewing angle. Due to its discontinued status, equivalent alternatives must be evaluated based on matching electrical performance, optical characteristics, and mechanical compatibility.

Substiute Parts

MX3SWT-A1-R250-000AF7

CreeLED, Inc.In Stock: 631MX3SWT-A1-R250-000AF7 Datasheet

Current PartRFQ

MX3AWT-A1-R250-000AF7

CreeLED, Inc.In Stock: 1048MX3AWT-A1-R250-000AF7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MX3SWT-A1-R250-000AF7 is evaluated based on the following critical parameters:

Optical Compatibility: Color temperature (3200K warm white) and CRI (80 Typ) must match to maintain color consistency in lighting applications.

Mechanical Compatibility: Package type (2-SMD, Gull Wing Exposed Pad), footprint dimensions (5.00 × 5.00 mm), and height (1.48 mm max) must be identical to ensure PCB assembly compatibility without design modification.

Electrical Performance: Forward voltage, test current, maximum current rating, and luminous flux must fall within acceptable ranges to function within existing circuit designs without requiring significant power supply or driver adjustments.

Series Compatibility: The XLamp® MX-3S series designation indicates a specific product line; substitutes from the broader XLamp® MX-3 family may be considered if all other parameters align.

The MX3AWT-A1-R250-000AF7 is identified as a substitute based on matching optical (3200K, 80 CRI), mechanical (identical package, footprint, height), and viewing angle (120°) characteristics. However, significant differences in electrical parameters exist and must be evaluated for circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: The MX3AWT-A1-R250-000AF7 provides optical and mechanical compatibility with the obsolete MX3SWT-A1-R250-000AF7. However, the substitute operates at significantly lower forward voltage (3.7V vs. 10.7V) and higher test current (350mA vs. 115mA), requiring circuit redesign to accommodate different power supply and driver requirements.

Active Production Status: The MX3AWT-A1-R250-000AF7 is classified as active, ensuring ongoing availability and supply chain reliability compared to the obsolete main part.

Regulatory Compliance: The substitute carries explicit RoHS Compliant certification, providing regulatory advantage for applications subject to environmental compliance requirements.

Thermal and Mechanical Alignment: Both parts share identical thermal resistance (11°C/W), package geometry, and MSL rating, eliminating mechanical redesign requirements at the assembly level.

Electrical Circuit Impact: Direct substitution without circuit modification is not feasible due to the 7V forward voltage differential. Applications must evaluate whether existing power supplies and LED drivers can be reconfigured or replaced to operate at the lower voltage and higher current of the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the MX3AWT-A1-R250-000AF7 be used as a direct drop-in replacement for the MX3SWT-A1-R250-000AF7?

A: No. While both parts share identical optical characteristics (3200K, 80 CRI, 91 lm), viewing angle (120°), and mechanical compatibility (5.00 × 5.00 mm footprint, 1.48 mm height), the substitute operates at 3.7V forward voltage compared to 10.7V in the main part. This 7V difference requires circuit redesign, including power supply and driver reconfiguration. PCB layout and component placement may remain unchanged, but electrical design must be modified.

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

A: Substitution eligibility is determined by: (1) Color temperature and CRI matching (both 3200K, 80 CRI); (2) Identical package type and footprint (2-SMD, Gull Wing Exposed Pad, 5.00 × 5.00 mm); (3) Matching viewing angle (120°); (4) Thermal resistance compatibility (11°C/W); and (5) Moisture sensitivity level (2A, 4 Weeks). Electrical parameters (forward voltage, current ratings) are secondary considerations that may require circuit adjustment.

Q: Why does the substitute part have higher current requirements?

A: The MX3AWT-A1-R250-000AF7 belongs to the XLamp® MX-3 series, an earlier generation compared to the MX-3S. Lower forward voltage (3.7V vs. 10.7V) at the same luminous output (91 lm) results in higher current draw (350mA test current vs. 115mA). This reflects different LED die architecture and efficiency characteristics between the two product generations.

Q: Is the substitute part suitable for applications requiring the exact electrical specifications of the main part?

A: No. Applications designed around the 10.7V, 115mA operating point of the MX3SWT-A1-R250-000AF7 cannot use the MX3AWT-A1-R250-000AF7 without circuit modification. The substitute is suitable only for applications where the power supply and driver can be redesigned to accommodate 3.7V, 350mA operation while maintaining the required 91 lm optical output.

Q: What is the advantage of using the substitute part despite electrical differences?

A: The MX3AWT-A1-R250-000AF7 is actively manufactured and available, whereas the main part is obsolete. For new designs or production continuation, the substitute offers supply chain reliability and RoHS compliance certification. Optical performance (color, CRI, brightness) and mechanical compatibility are preserved, making it suitable for applications where circuit redesign is feasible.

Q: Are there any packaging differences between the two parts?

A: No. Both parts use identical 2-SMD, Gull Wing Exposed Pad packaging with 5.00 × 5.00 mm footprint and 1.48 mm maximum height. The substitute is available in Tape & Reel (TR) packaging format, which is standard for active production parts. Assembly equipment and PCB layout require no modification for mechanical compatibility.