ASMF-LWG4-NQTAD Equivalent & Substitute Parts

Part Overview

The ASMF-LWG4-NQTAD is a warm white LED (2700K) in 3030 metric package manufactured by Broadcom Limited. This component is classified as obsolete, making identification of suitable substitutes necessary for ongoing production and maintenance applications. The part operates at 2.9V forward voltage with 65mA test current and delivers 24 lumens at 25°C under standard test conditions.

Substiute Parts

ASMF-LWG4-NQTAD

Broadcom LimitedIn Stock: 1182ASMF-LWG4-NQTAD Datasheet

Current PartRFQ

ASMF-LWG8-NRUAD

Broadcom LimitedIn Stock: 49740ASMF-LWG8-NRUAD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASMF-LWG4-NQTAD is determined by the following critical parameters:

• Color specification: White, Warm (2700K CCT)
• Package type: 1212 (3030 Metric) surface mount
• Electrical compatibility: Forward voltage range, test current, and maximum current ratings
• Optical performance: Viewing angle (120°) and color rendering index (CRI 80)
• Compliance: RoHS3 and MSL 3 certification requirements

The ASMF-LWG8-NRUAD meets all substitution criteria within these parameters while maintaining functional equivalence for the 3030 package form factor.

Parameter Comparison

Engineering Selection Recommendations

The ASMF-LWG8-NRUAD is the manufacturer-recommended substitute for the obsolete ASMF-LWG4-NQTAD. Both components maintain identical compliance certifications (ROHS3, MSL 3) and share the same package footprint and mechanical dimensions. The substitute part is currently in active production status with higher inventory availability.

The ASMF-LWG8-NRUAD demonstrates improved thermal performance (10°C/W versus 15°C/W) and higher luminous efficacy (154 lm/W versus 127 lm/W) while maintaining electrical compatibility at the specified 65mA test current. Forward voltage differs by 0.1V (2.8V versus 2.9V), which remains within typical circuit design tolerances for LED applications.

Frequently Asked Questions (FAQ)

Q: Can the ASMF-LWG8-NRUAD be used as a direct replacement for the ASMF-LWG4-NQTAD?

A: Yes. Both parts share identical package dimensions (1212/3030 metric), color specification (2700K warm white), viewing angle (120°), and maximum current rating (240mA). The forward voltage difference of 0.1V is within standard design margins for LED circuits.

Q: What is the difference in thermal performance between these parts?

A: The ASMF-LWG8-NRUAD has a thermal resistance of 10°C/W compared to 15°C/W for the ASMF-LWG4-NQTAD, indicating improved heat dissipation characteristics in the substitute part.

Q: Are there packaging differences between the main part and substitute?

A: The ASMF-LWG4-NQTAD is supplied in Cut Tape (CT) & Digi-Reel packaging, while the ASMF-LWG8-NRUAD is supplied in Tape & Reel (TR) format. Both are suitable for surface mount assembly processes.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the ASMF-LWG4-NQTAD and ASMF-LWG8-NRUAD are ROHS3 compliant with MSL 3 (168 Hours) moisture sensitivity rating.

Q: What is the luminous flux difference at test conditions?

A: At 65mA test current and 25°C, the ASMF-LWG8-NRUAD produces 28 lumens compared to 24 lumens for the ASMF-LWG4-NQTAD, representing approximately 17% higher light output.