ASMT-QWBG LED Equivalent & Substitute Parts

Part Overview

The ASMT-QWBG is a white cool-temperature (5700K) surface-mount LED manufactured by Broadcom Limited in a 4-PLCC package. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. The part delivers 54lm at 25°C under 150mA test current with a forward voltage of 3.4V and 120° viewing angle, suitable for general illumination applications requiring cool white light output.

Substiute Parts

ASMT-QWBG-NFHCE

Broadcom LimitedIn Stock: 1135ASMT-QWBG-NFHCE Datasheet

Current PartRFQ

EAHP5630WA1

Everlight Electronics Co LtdIn Stock: 810EAHP5630WA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASMT-QWBG must satisfy the following criteria based on provided electrical and mechanical parameters:

Primary Matching Criteria:

• Color: White, Cool temperature
• CCT: 5700K
• Current - Test: 150mA
• Viewing Angle: 120°
• Mounting Type: Surface Mount
• Maximum Current Rating: ≥180mA

Secondary Compatibility Factors:

• Forward Voltage (Vf): Within operational range of 3.15V–3.4V
• Luminous Flux: Comparable output at test current (46lm–66lm range acceptable)
• Package Type: Surface-mount PLCC variants (4-PLCC, 2-PLCC, 2212/5630 metric)

The EAHP5630WA1 from Everlight Electronics meets these criteria with matching color temperature, test current, viewing angle, and surface-mount configuration. Although packaged in a 2-PLCC (2212/5630 metric) format rather than 4-PLCC, the electrical performance and thermal characteristics remain compatible for equivalent circuit operation.

Parameter Comparison

Engineering Selection Recommendations

ASMT-QWBG Status: Obsolete. Original manufacturer (Broadcom Limited) no longer produces this component. REACH Unaffected classification applies.

EAHP5630WA1 Status: Active production. Everlight Electronics maintains current inventory and supply chain availability. RoHS3 Compliant certification provides regulatory alignment for new designs and production continuity.

Selection Basis:

The EAHP5630WA1 is the designated manufacturer-recommended substitute. Both parts operate at identical test current (150mA), color temperature (5700K), and viewing angle (120°). The EAHP5630WA1 demonstrates superior luminous efficiency (140 lm/W vs. 106 lm/W) and improved thermal performance (21°C/W vs. 40°C/W package resistance).

Package format differs (2-PLCC vs. 4-PLCC), requiring PCB layout modification. The EAHP5630WA1 exhibits lower forward voltage (3.15V vs. 3.4V), reducing power dissipation by approximately 0.25V per device. Moisture sensitivity classification increases from MSL 2 to MSL 3, requiring adjusted storage and handling protocols (168-hour vs. 1-year shelf life at specified humidity).

Frequently Asked Questions (FAQ)

Q: Can the EAHP5630WA1 directly replace the ASMT-QWBG without circuit modification?

A: Electrical substitution is feasible due to matching test current (150mA), color temperature (5700K), and maximum current rating (180mA). The 0.25V forward voltage difference (3.4V to 3.15V) is within typical LED circuit tolerance. However, PCB layout modification is required due to package format change from 4-PLCC to 2-PLCC (2212/5630 metric). Footprint redesign and revalidation are necessary.

Q: What are the key differences in thermal performance?

A: The EAHP5630WA1 provides superior thermal characteristics with package thermal resistance of 21°C/W compared to the ASMT-QWBG at 40°C/W. This 50% improvement in thermal dissipation reduces junction temperature rise under identical operating conditions, extending component lifespan and improving reliability in thermally constrained applications.

Q: How do moisture sensitivity levels affect handling and storage?

A: The ASMT-QWBG operates under MSL 2 classification (1-year shelf life at ≤30% relative humidity). The EAHP5630WA1 requires MSL 3 handling (168-hour shelf life at ≤30% relative humidity). Shorter shelf life necessitates more frequent inventory rotation and stricter environmental controls during storage and pre-reflow conditioning. Bake-out procedures may be required if storage limits are exceeded.

Q: Is the luminous flux increase from 54lm to 66lm significant for circuit design?

A: The EAHP5630WA1 delivers 22% higher luminous flux (66lm vs. 54lm) at identical test current. This increased output may require circuit-level brightness adjustment through current limiting resistor modification or PWM dimming implementation to maintain consistent illumination levels in the target application.

Q: What compliance certifications apply to the substitute part?

A: The EAHP5630WA1 carries RoHS3 Compliant certification, ensuring compliance with current environmental regulations. Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications for export and tariff purposes.