MX3SWT-A1-R250-000DF4 Equivalent & Substitute Parts

Part Overview

The MX3SWT-A1-R250-000DF4 is a CreeLED XLamp® MX-3S neutral white LED (4750K) in a 2-SMD surface mount package with exposed pad. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The substitute part maintains the same color temperature, viewing angle, and physical footprint while offering different electrical characteristics suited to alternative circuit topologies.

Substiute Parts

MX3SWT-A1-R250-000DF4

CreeLED, Inc.In Stock: 1073MX3SWT-A1-R250-000DF4 Datasheet

Current PartRFQ

MX3AWT-A1-R250-000DF4

CreeLED, Inc.In Stock: 863MX3AWT-A1-R250-000DF4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The MX3AWT-A1-R250-000DF4 qualifies as a functional substitute based on the following alignment criteria:

Matching Parameters:

• Color and CCT: Both parts deliver neutral white at 4750K
• Luminous flux: Identical specification at 111lm (107lm – 114lm) @ 25°C
• CRI: Both rated 75 (Typ)
• Viewing angle: Both 120°
• Physical footprint: Identical 5.00mm × 5.00mm, 1.48mm height
• Package type: Both 2-SMD, Gull Wing Exposed Pad
• Thermal resistance: Both 11°C/W
• MSL rating: Both 2A (4 Weeks)

Differing Parameters:

• Forward voltage: 3.7V (MX3AWT) vs. 10.7V (MX3SWT)
• Test current: 350mA (MX3AWT) vs. 115mA (MX3SWT)
• Maximum current: 500mA (MX3AWT) vs. 175mA (MX3SWT)
• Lumens/Watt: 86 lm/W (MX3AWT) vs. 90 lm/W (MX3SWT)
• Product status: Active (MX3AWT) vs. Obsolete (MX3SWT)

Substitution is valid when circuit topology and power supply design accommodate the lower forward voltage and higher current requirements of the MX3AWT series.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The MX3AWT-A1-R250-000DF4 is a valid substitute for the obsolete MX3SWT-A1-R250-000DF4 when the following conditions are met:

1. Circuit topology compatibility: The design must accommodate a 3.7V forward voltage instead of 10.7V. This typically requires redesign of the current-limiting circuit or power supply configuration.

2. Current source capability: The circuit must supply 350mA at test conditions (vs. 115mA for the original part). Power dissipation and thermal management must be re-evaluated accordingly.

3. Product status advantage: The MX3AWT is actively manufactured by CreeLED, ensuring long-term availability and supply chain continuity compared to the obsolete MX3SWT.

4. Compliance and certification: Both parts carry identical MSL ratings (2A, 4 Weeks) and REACH/ECCN classifications, requiring no change to handling or regulatory documentation.

5. Optical and thermal performance: Identical viewing angle (120°), CRI (75), and thermal resistance (11°C/W) ensure optical and thermal characteristics remain unchanged. The slight efficiency difference (90 lm/W vs. 86 lm/W) is acceptable for most applications.

When substitution is not recommended:

• Designs with fixed high-voltage, low-current power supplies that cannot be modified to deliver 3.7V at 350mA
• Applications where the 4 lm/W efficiency loss is critical to system power budget
• Designs requiring the specific electrical characteristics of the MX-3S series

Frequently Asked Questions (FAQ)

Q: Can I use the MX3AWT-A1-R250-000DF4 as a direct drop-in replacement for the MX3SWT-A1-R250-000DF4?

A: No. While both parts share identical physical dimensions, viewing angle, color temperature, and luminous flux, the forward voltage differs significantly (3.7V vs. 10.7V). The circuit driving the LED must be redesigned to supply the correct voltage and current (350mA vs. 115mA). PCB footprint compatibility does not guarantee electrical compatibility.

Q: What are the main electrical differences between these two parts?

A: The MX3AWT operates at 3.7V with a test current of 350mA, while the MX3SWT operates at 10.7V with a test current of 115mA. This represents a fundamental difference in the LED's internal structure and electrical characteristics. The MX3AWT is designed for lower-voltage, higher-current applications, whereas the MX3SWT is optimized for higher-voltage, lower-current circuits.

Q: Will the optical output be the same?

A: Yes. Both parts deliver 111lm (107–114lm) at 25°C with identical CRI (75) and viewing angle (120°). The color temperature (4750K neutral white) is also identical. From an optical perspective, the parts are equivalent.

Q: Why is the MX3SWT obsolete?

A: The MX3SWT-A1-R250-000DF4 is classified as obsolete by CreeLED. The MX3AWT represents the active product line continuation within the XLamp family, offering the same optical performance with improved manufacturing availability.

Q: Are there any thermal management differences?

A: Both parts have identical thermal resistance (11°C/W). However, the MX3AWT dissipates more power at test conditions (3.7V × 350mA = 1.295W vs. 10.7V × 115mA = 1.231W), requiring careful thermal design review in the application circuit.

Q: Do I need to update my component handling procedures?

A: No. Both parts carry identical MSL ratings (2A, 4 Weeks) and REACH/ECCN classifications. Storage, handling, and regulatory documentation remain unchanged.

Q: Can I source the MX3AWT-A1-R250-000DF4 in the same packaging as the MX3SWT?

A: The MX3AWT is available in Tape & Reel (TR) packaging. Both parts use the same 2-SMD, Gull Wing Exposed Pad case style with identical dimensions (5.00mm × 5.00mm × 1.48mm max height), ensuring PCB assembly compatibility.