ASMT-QWBH-NGJEE LED Equivalent & Substitute Parts

Part Overview

The ASMT-QWBH-NGJEE is a surface-mount LED from Broadcom Limited, designed for neutral white lighting applications at 4500K color temperature. This component delivers 60lm at 25°C with a forward voltage of 3.4V and 150mA test current, housed in a 4-PLCC package measuring 3.20mm × 2.80mm. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

ASMT-QWBH-NGJEE

Broadcom LimitedIn Stock: 827ASMT-QWBH-NGJEE Datasheet

Current PartRFQ

MX6AWT-A1-0000-000DE4

CreeLED, Inc.In Stock: 829MX6AWT-A1-0000-000DE4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The MX6AWT-A1-0000-000DE4 qualifies as a substitute based on the following alignment of critical parameters:

• Color and CCT match: Both deliver neutral white light at 4500K
• Viewing angle equivalence: Both provide 120° viewing angle
• Mounting compatibility: Both are surface-mount components
• Luminous flux compatibility: The substitute delivers 111lm at 300mA test current, providing higher absolute output suitable for applications requiring the ASMT-QWBH's performance envelope
• Forward voltage proximity: 3.3V (substitute) versus 3.4V (main part) represents acceptable variance for LED applications
• Optical performance: Both achieve comparable lumens-per-watt efficiency (112 lm/W substitute vs. 118 lm/W main part)

The primary design consideration is package form factor change from 4-PLCC to 2-SMD with gull wing exposed pad, requiring PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

The MX6AWT-A1-0000-000DE4 is suitable for applications requiring ASMT-QWBH-NGJEE replacement based on the following factors:

• Active product status ensures long-term availability and supply chain stability
• RoHS compliance of the substitute provides regulatory advantage over the main part
• Thermal resistance improvement (5°C/W vs. 40°C/W) enhances thermal management in high-density applications
• Higher maximum current rating (1A vs. 180mA) provides operational margin
• Identical color temperature and viewing angle maintain optical performance specifications

Design transition requires PCB layout modification to accommodate the larger 5.00mm × 5.00mm footprint and 2-SMD gull wing package configuration. The substitute operates at lower forward voltage (3.3V vs. 3.4V), requiring minor adjustments to current-limiting resistor calculations if applicable.

Frequently Asked Questions (FAQ)

Q: Can the MX6AWT-A1-0000-000DE4 directly replace the ASMT-QWBH-NGJEE without PCB modification?

A: No. The substitute uses a 2-SMD gull wing exposed pad package (5.00mm × 5.00mm) versus the original 4-PLCC package (3.20mm × 2.80mm). PCB layout redesign is required.

Q: Are the color temperatures identical between these parts?

A: Yes. Both components deliver neutral white light at 4500K, ensuring color consistency in lighting applications.

Q: What is the impact of the 0.1V forward voltage difference?

A: The 3.3V (substitute) versus 3.4V (main part) difference is within acceptable LED operating variance. Current-limiting resistor values may require minor adjustment based on circuit design.

Q: Does the substitute provide equivalent luminous output?

A: The substitute delivers higher absolute flux (111lm at 300mA vs. 60lm at 150mA). When operated at equivalent current levels, output comparison requires application-specific analysis.

Q: What are the compliance differences?

A: The substitute is RoHS compliant, whereas the main part status is not specified. Both are REACH unaffected and classified as EAR99 for export control purposes.

Q: How do thermal characteristics compare?

A: The substitute exhibits significantly lower thermal resistance (5°C/W vs. 40°C/W), providing superior heat dissipation performance in thermal-constrained applications.

Q: Is moisture sensitivity a concern during transition?

A: The substitute has MSL 2A (4 weeks) versus MSL 2 (1 year) for the main part. Stricter moisture control procedures are required during storage and handling of the substitute component.