ASMF-LWG4-NRUGD Equivalent & Substitute Parts

Part Overview

The ASMF-LWG4-NRUGD is a cool white LED (6200K) manufactured by Broadcom Limited in a 1212 (3030 Metric) surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and design requirements. The part delivers 27lm at 25°C under 65mA test current with a forward voltage of 2.9V and 120° viewing angle. Due to its obsolete status, equivalent active production parts must be evaluated for direct replacement in existing designs.

Substiute Parts

ASMF-LWG4-NRUGD

Broadcom LimitedIn Stock: 864ASMF-LWG4-NRUGD Datasheet

Current PartRFQ

ASMF-LWG8-NTWGD

Broadcom LimitedIn Stock: 51120ASMF-LWG8-NTWGD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Color and correlated color temperature (CCT): White, Cool 6200K
• Package and case format: 1212 (3030 Metric) surface mount
• Electrical characteristics: Forward voltage range, test current, and maximum current ratings
• Optical performance: Luminous flux output and viewing angle
• Compliance certifications: RoHS3 and MSL rating

The ASMF-LWG8-NTWGD meets all substitution criteria as an active production part from the same manufacturer with identical color temperature, package format, viewing angle, and compliance certifications. Electrical and optical parameters remain within acceptable tolerance for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The ASMF-LWG8-NTWGD is the qualified substitute for the obsolete ASMF-LWG4-NRUGD. Both parts maintain identical compliance certifications (ROHS3, MSL 3), identical package geometry (1212 / 3030 Metric), and identical optical specifications (6200K, 120° viewing angle, CRI 80). The substitute part is in active production status, ensuring supply chain continuity.

The ASMF-LWG8-NTWGD demonstrates improved performance characteristics: higher luminous flux (31lm vs. 27lm), lower forward voltage (2.8V vs. 2.9V), superior efficiency (170 lm/W vs. 143 lm/W), and improved thermal management (10°C/W vs. 15°C/W). These parameters remain within the electrical and thermal operating envelope of designs specified for the original part.

Frequently Asked Questions (FAQ)

Q: Can the ASMF-LWG8-NTWGD directly replace the ASMF-LWG4-NRUGD in existing PCB designs?

A: Yes. Both parts share identical package dimensions (1212 / 3030 Metric), identical mounting type (surface mount), and identical pin configuration. No PCB layout modifications are required.

Q: What are the key differences between these parts?

A: The substitute part offers higher luminous flux output (31lm vs. 27lm), lower forward voltage (2.8V vs. 2.9V), and improved thermal resistance (10°C/W vs. 15°C/W). Color temperature, viewing angle, CRI, and compliance certifications remain identical.

Q: Are there any electrical compatibility concerns?

A: No. Both parts operate at identical test current (65mA) and maximum current (240mA). The forward voltage difference of 0.1V is within typical circuit design tolerances and does not require circuit modifications.

Q: What is the supply status difference?

A: The original part (ASMF-LWG4-NRUGD) is obsolete with limited remaining inventory. The substitute (ASMF-LWG8-NTWGD) is in active production with 51,017 units in stock, ensuring long-term availability.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant and carry identical MSL rating (3, 168 Hours), meeting the same environmental and regulatory standards.