SPMWHT541MD5WARMS1 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WARMS1 is a Samsung Semiconductor LM561B series cool white LED (5000K) in 5630 package format, designed for surface mount applications. This component operates at 2.9V forward voltage with a 65mA test current and delivers performance in a compact 5.00mm x 3.00mm footprint with 0.90mm maximum seated height.

The SPMWHT541MD5WARMS1 carries a "Not For New Designs" product status. This designation indicates the part is in mature or end-of-life phase, making identification of functionally equivalent alternatives essential for ongoing production, maintenance, and redesign activities. Substitute parts must maintain compatibility across electrical characteristics, mechanical dimensions, and thermal properties while meeting current compliance standards.

Substiute Parts

SPMWHT541MD5WARMS1

Samsung Semiconductor, Inc.In Stock: 729SPMWHT541MD5WARMS1 Datasheet

Current PartRFQ

SPMWHT541MP5WARKS4

Samsung Semiconductor, Inc.In Stock: 73422SPMWHT541MP5WARKS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WARMS1 is determined by strict alignment across the following parameters:

Mandatory Matching Criteria:

• Color and CCT: White, Cool 5000K (optical output must be identical)
• Package Type: 4-SMD, 5630 supplier device package (mechanical compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Footprint Dimensions: 5.00mm x 3.00mm (PCB layout fit)
• Forward Voltage Range: 2.9V nominal (circuit design compatibility)
• Test Current: 65mA baseline (performance reference point)

Allowable Variation Parameters:

• Forward Voltage (Vf): Tolerance within typical circuit design margins
• Maximum Current: May exceed original specification if higher rating is available
• Height - Seated: Variation acceptable if within assembly clearance requirements
• Thermal Resistance: Lower values (improved thermal performance) are acceptable
• Lumens/Watt and CRI: Enhanced specifications are acceptable if not explicitly restricted

The SPMWHT541MP5WARKS4 qualifies as a direct substitute based on matching color temperature, package format, footprint, and electrical operating point, while offering improved specifications in thermal resistance, maximum current rating, and compliance status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WARKS4

The SPMWHT541MP5WARKS4 is the qualified substitute for SPMWHT541MD5WARMS1 applications. Selection is based on the following engineering factors:

Electrical Compatibility: Forward voltage differential of 0.05V (2.9V to 2.95V) is within acceptable tolerance for standard LED circuit designs. Both parts operate at identical 65mA test current, ensuring equivalent baseline performance. The substitute's higher maximum current rating (180mA vs. 150mA) provides additional operational margin without affecting standard 65mA applications.

Mechanical Compatibility: Identical footprint dimensions (5.00mm x 3.00mm) and 5630 package format ensure direct PCB layout compatibility. The substitute's reduced seated height (0.80mm vs. 0.90mm) provides improved assembly clearance and may reduce component stress in confined spaces.

Thermal Performance: The substitute offers improved thermal resistance (15°C/W vs. 16°C/W), enabling better heat dissipation and potentially extending component operational life under sustained current conditions.

Compliance and Availability: The substitute carries ROHS3 compliance status (vs. RoHS Compliant on the main part), meeting current regulatory requirements. Active product status ensures ongoing availability and supply chain reliability, addressing the obsolescence risk associated with the main part's "Not For New Designs" designation.

Packaging Consideration: The main part is supplied in Tape & Reel (TR) format; the substitute is supplied in Cut Tape (CT) format. Packaging format selection depends on production volume and assembly equipment compatibility.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WARKS4 be used as a direct replacement in existing designs using SPMWHT541MD5WARMS1?

A: Yes. The substitute maintains identical color temperature (5000K), footprint (5.00mm x 3.00mm), package type (4-SMD, 5630), and test current (65mA). Forward voltage variance (0.05V) is within standard LED circuit design tolerance. PCB layout and circuit design require no modification.

Q: What is the significance of the "Not For New Designs" status on the main part?

A: This designation indicates the SPMWHT541MD5WARMS1 is in mature or end-of-life phase. Manufacturers typically do not recommend this part for new product development. For ongoing production or redesign activities, the SPMWHT541MP5WARKS4 (Active status) is the appropriate selection to ensure long-term supply availability.

Q: Are there differences in optical output between these parts?

A: Both parts are specified at 5000K cool white color temperature. The substitute provides documented lumens output (34lm at 65mA test current) and efficiency (177 lm/W), while the main part does not include these specifications in the provided data. Optical output is equivalent at the specified 65mA test current.

Q: How does the packaging format difference (Tape & Reel vs. Cut Tape) affect substitution?

A: Packaging format affects supply and assembly logistics but not component electrical or mechanical performance. Tape & Reel (TR) format is typically used for high-volume automated assembly; Cut Tape (CT) format is used for lower volumes or manual assembly. Selection depends on production volume and assembly equipment capability, not component compatibility.

Q: What is the thermal resistance specification, and why does it matter for substitution?

A: Thermal resistance (measured in °C/W) indicates how effectively the component dissipates heat. Lower values indicate better thermal performance. The substitute's 15°C/W (vs. 16°C/W) represents approximately 6% improvement in heat dissipation capability. This is beneficial for applications with sustained high current or elevated ambient temperatures.

Q: Is the 0.05V forward voltage difference significant?

A: No. Standard LED circuit designs typically accommodate forward voltage tolerance of ±0.1V or greater. The 0.05V difference between 2.9V and 2.95V is well within normal design margins and requires no circuit modification.

Q: What does ROHS3 compliance mean compared to RoHS Compliant?

A: ROHS3 represents the third iteration of the Restriction of Hazardous Substances directive, incorporating additional restricted substances and stricter limits. ROHS3 compliance is a superset of earlier RoHS standards, indicating the substitute meets current and anticipated regulatory requirements.

Q: Can the substitute handle higher current than the main part?

A: Yes. The substitute's maximum current rating is 180mA compared to 150mA on the main part. However, standard applications operate at 65mA test current for both parts. The higher rating on the substitute provides additional operational margin and thermal headroom for demanding applications.