MX3SWT-A1-0000-0007B9 Equivalent & Substitute Parts

Part Overview

The MX3SWT-A1-0000-0007B9 is an XLamp® MX-3S white LED in a 2-SMD, Gull Wing Exposed Pad package designed for surface mount applications. This part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing production and maintenance requirements. The MX-3S series has been superseded by the active MX-3 series, with the MX3AWT-A1-0000-0007B8 serving as the primary substitute option.

Substiute Parts

MX3SWT-A1-0000-0007B9

CreeLED, Inc.In Stock: 787MX3SWT-A1-0000-0007B9 Datasheet

Current PartRFQ

MX3AWT-A1-0000-0007B8

CreeLED, Inc.In Stock: 858MX3AWT-A1-0000-0007B8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the MX3SWT-A1-0000-0007B9 and MX3AWT-A1-0000-0007B8 is determined by the following allowable parameters:

• Identical physical package: 2-SMD, Gull Wing Exposed Pad
• Identical mechanical dimensions: 5.00mm x 5.00mm footprint, 1.48mm maximum seated height
• Identical viewing angle: 120°
• Identical thermal resistance: 11°C/W
• Identical color: White
• Identical mounting type: Surface Mount
• Identical MSL rating: 2A (4 Weeks)

The primary distinction lies in electrical performance characteristics: forward voltage (Vf), test current, and maximum current ratings differ between the two parts. The MX-3 series (substitute) operates at lower forward voltage (3.7V vs. 10.7V) with higher test current (350mA vs. 115mA) and higher maximum current rating (500mA vs. 175mA).

Parameter Comparison

Engineering Selection Recommendations

The MX3AWT-A1-0000-0007B8 is the designated substitute for the obsolete MX3SWT-A1-0000-0007B9. Selection of this substitute is supported by:

• Active product status of the MX3AWT-A1-0000-0007B8, ensuring continued availability and supply chain stability
• RoHS compliance certification of the substitute part, meeting current regulatory requirements
• Identical mechanical and thermal characteristics, enabling direct footprint compatibility
• Equivalent luminous flux output at rated conditions (71lm nominal)
• Identical package configuration and mounting interface

Circuit design modifications are required due to differing electrical characteristics. The substitute operates at 3.7V forward voltage compared to 10.7V for the original part, necessitating driver circuit redesign and current limiting adjustments.

Frequently Asked Questions (FAQ)

Q: Can the MX3AWT-A1-0000-0007B8 be used as a direct drop-in replacement without circuit modifications?

A: No. While the mechanical footprint and thermal characteristics are identical, the electrical parameters differ significantly. The substitute requires 3.7V forward voltage versus 10.7V for the original part. Driver circuits and current limiting resistors must be redesigned accordingly.

Q: Are the physical dimensions and mounting interfaces identical between these parts?

A: Yes. Both parts share identical dimensions (5.00mm x 5.00mm), maximum seated height (1.48mm), and 2-SMD Gull Wing Exposed Pad package configuration. PCB footprints are compatible.

Q: What is the impact of the different test current ratings?

A: The substitute part is tested at 350mA versus 115mA for the original. This reflects the lower forward voltage design of the MX-3 series. Maximum current ratings also differ (500mA vs. 175mA). Circuit design must account for these specifications.

Q: Does the substitute meet current regulatory compliance standards?

A: Yes. The MX3AWT-A1-0000-0007B8 is RoHS compliant and REACH unaffected, meeting current regulatory requirements. The original part status is not specified for RoHS compliance.

Q: Are there differences in thermal performance between the two parts?

A: No. Both parts have identical thermal resistance of 11°C/W, ensuring equivalent thermal management characteristics in the application.

Q: What is the luminous flux equivalence between these parts?

A: Both parts deliver 71lm nominal flux at their respective test conditions, with a range of 67lm to 74lm. Lumens per watt efficiency differs slightly (58 lm/W vs. 55 lm/W) due to the different operating currents.