SPMWHT541MP5WAWMSD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP5WAWMSD is a Samsung Semiconductor LM561B Plus white warm LED (2700K) in 5630 surface mount package with 4-SMD flat leads configuration. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part delivers 32lm at 65mA test current with 2.95V forward voltage and 120° viewing angle. Due to its discontinued design status, equivalent substitute parts from the active LM561B Plus and LM561C series are available to maintain design continuity and ensure supply chain reliability.

Substiute Parts

SPMWHT541MP5WAWMSD

Samsung Semiconductor, Inc.In Stock: 1251SPMWHT541MP5WAWMSD Datasheet

Current PartRFQ

SPMWHT541MP5WAWMS5

Samsung Semiconductor, Inc.In Stock: 23523SPMWHT541MP5WAWMS5 Datasheet

SimilarRFQ

SPMWHT541ML5XAW0S0

Samsung Semiconductor, Inc.In Stock: 1160SPMWHT541ML5XAW0S0 Datasheet

Parametric EquivalentRFQ

SPMWHT541ML5XAWKS0

Samsung Semiconductor, Inc.In Stock: 870SPMWHT541ML5XAWKS0 Datasheet

Parametric EquivalentRFQ

SPMWHT541ML5XAWMS0

Samsung Semiconductor, Inc.In Stock: 32036SPMWHT541ML5XAWMS0 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Color and CCT: White, Warm 2700K
• Package Type: 4-SMD, Flat Leads (5630)
• Dimensions: 5.00mm × 3.00mm × 0.80mm (Max)
• Viewing Angle: 120°
• CRI: 80
• Test Current: 65mA
• Maximum Current: 180mA
• Mounting Type: Surface Mount
• MSL Rating: 2A (4 Weeks)

Allowable Parameter Variance:

• Forward Voltage (Vf): ±0.20V tolerance
• Flux Output: ±2lm tolerance (30–34lm range maintained)
• Lumens/Watt: Efficiency variance acceptable within series specifications
• Thermal Resistance: Lower values acceptable (improved thermal performance)
• Product Status: Active status preferred over discontinued status

Substitute Parts Identified:

1. SPMWHT541MP5WAWMS5 — Direct LM561B Plus series variant (Active status)
2. SPMWHT541ML5XAW0S0 — LM561C series parametric equivalent (Active status)
3. SPMWHT541ML5XAWKS0 — LM561C series parametric equivalent (Active status)
4. SPMWHT541ML5XAWMS0 — LM561C series parametric equivalent (Active status)

All substitute parts maintain identical package geometry, color temperature, viewing angle, and CRI specifications. Variations in forward voltage and thermal resistance remain within acceptable engineering tolerances for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAWMS5

This part is the direct equivalent within the LM561B Plus series and maintains identical electrical and thermal characteristics to the main part. It carries Active product status, ensuring long-term availability and supply chain stability. The forward voltage (2.95V) and thermal resistance (15°C/W) are functionally equivalent. This part is recommended for applications requiring minimal design modification and maximum compatibility with existing specifications.

Secondary Substitutes: SPMWHT541ML5XAW0S0, SPMWHT541ML5XAWKS0, SPMWHT541ML5XAWMS0

These parts represent the LM561C series, which offers improved efficiency (176–180 lm/W versus 162 lm/W) and superior thermal performance (12°C/W versus 16°C/W). Forward voltage ranges from 2.75V to 2.8V, representing a 0.15–0.20V reduction from the main part. All three maintain identical flux output (32lm), CRI (80), viewing angle (120°), and package geometry. These parts are suitable for applications where thermal management is critical or where improved luminous efficacy is beneficial. All three carry Active product status with RoHS compliance certifications.

Compliance Considerations:

All substitute parts maintain RoHS compliance (either RoHS or ROHS3 standard). The main part carries RoHS Compliant status; SPMWHT541MP5WAWMS5 and SPMWHT541ML5XAWMS0 carry ROHS3 Compliant status, representing enhanced environmental compliance. MSL rating (2A, 4 Weeks) is uniform across all parts, ensuring identical moisture handling requirements during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAWMS5 be used as a direct drop-in replacement for SPMWHT541MP5WAWMSD?

A: Yes. Both parts are LM561B Plus series components with identical forward voltage (2.95V), flux output (32lm), and thermal resistance (15°C/W). Package geometry, color temperature, viewing angle, and CRI specifications are identical. The primary difference is product status: SPMWHT541MP5WAWMS5 is Active, while the main part is Not For New Designs. No circuit modifications are required.

Q: What is the difference between LM561B Plus and LM561C series substitutes?

A: The LM561C series (SPMWHT541ML5XAW0S0, SPMWHT541ML5XAWKS0, SPMWHT541ML5XAWMS0) offers improved luminous efficacy (176–180 lm/W versus 162 lm/W) and superior thermal performance (12°C/W versus 16°C/W). Forward voltage is lower (2.75–2.8V versus 2.95V). All other parameters—flux output, color temperature, CRI, viewing angle, and package dimensions—remain identical. LM561C substitutes are suitable for designs where thermal management or efficiency improvements are beneficial.

Q: Are there any forward voltage compatibility concerns when substituting LM561C parts?

A: Forward voltage differences range from 0.15V to 0.20V lower in LM561C parts (2.75–2.8V versus 2.95V). This variance is within acceptable engineering tolerance for LED applications. However, if the circuit uses a current-limiting resistor or constant-current driver, the lower forward voltage will result in slightly higher current through the resistor or lower voltage drop across the driver. For constant-current driver circuits, this difference is negligible. For resistor-based circuits, recalculation of the series resistor value may be necessary to maintain the target 65mA test current.

Q: Do all substitute parts have the same package dimensions?

A: Yes. All substitute parts use the 4-SMD, Flat Leads (5630) package with identical dimensions: 5.00mm length × 3.00mm width × 0.80mm maximum height. PCB footprints and reflow profiles are interchangeable.

Q: What is the significance of the thermal resistance difference?

A: Thermal resistance values range from 12°C/W (LM561C series) to 16°C/W (main part). Lower thermal resistance indicates superior heat dissipation from the LED junction to the PCB. In high-brightness or continuous-operation applications, LM561C substitutes (12°C/W) provide better thermal management and may extend component lifespan. For standard applications at 65mA test current, this difference has minimal impact on junction temperature.

Q: Are ROHS3 and RoHS Compliant certifications interchangeable?

A: ROHS3 Compliant represents enhanced environmental compliance with stricter restrictions on hazardous substances. RoHS Compliant represents the baseline standard. ROHS3-certified parts (SPMWHT541MP5WAWMS5, SPMWHT541ML5XAWMS0) are fully compatible with designs requiring RoHS Compliant parts. No design changes are required when substituting ROHS3-certified parts into RoHS-compliant designs.

Q: What is the MSL rating, and does it affect substitution?

A: MSL (Moisture Sensitivity Level) 2A (4 Weeks) indicates the component can be exposed to ambient conditions (30°C, 60% relative humidity) for up to 4 weeks before reflow soldering without requiring baking. All substitute parts carry identical MSL ratings, ensuring uniform storage and handling requirements. No special precautions are needed when switching between parts.

Q: Can I use multiple substitute parts interchangeably in the same design?

A: Yes, with the caveat that forward voltage differences may require circuit adjustments. SPMWHT541MP5WAWMS5 (LM561B Plus, 2.95V) is the closest electrical match to the main part. LM561C substitutes (2.75–2.8V) offer improved efficiency but require forward voltage consideration in resistor-based current-limiting circuits. For constant-current driver circuits, all substitutes are fully interchangeable.