SPMWHT541ML5XATKS5 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541ML5XATKS5 is a Samsung Semiconductor LM561C series surface-mount LED designed for neutral white lighting applications. This 5630 package LED operates at 4000K color temperature with a forward voltage of 2.75V and test current of 65mA, delivering 35 lumens at 196 lm/W efficiency. The part is classified as Active product status with full RoHS compliance and 2A moisture sensitivity level.

Substitute parts become necessary when the primary part number reaches inventory constraints, when alternative packaging configurations are required, or when design flexibility permits selection from equivalent performance tiers within the LM561 series family.

Substiute Parts

SPMWHT541ML5XATKS5

Samsung Semiconductor, Inc.In Stock: 742SPMWHT541ML5XATKS5 Datasheet

Current PartRFQ

SPMWHT541ML5XAT0S5

Samsung Semiconductor, Inc.In Stock: 14134SPMWHT541ML5XAT0S5 Datasheet

Parametric EquivalentRFQ

SPMWHT541ML5XATMS5

Samsung Semiconductor, Inc.In Stock: 25942SPMWHT541ML5XATMS5 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WAT0S5

Samsung Semiconductor, Inc.In Stock: 5783SPMWHT541MP5WAT0S5 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATMS5

Samsung Semiconductor, Inc.In Stock: 2164SPMWHT541MP5WATMS5 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATUS5

Samsung Semiconductor, Inc.In Stock: 25581SPMWHT541MP5WATUS5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541ML5XATKS5 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color: White, Neutral (fixed requirement)
• CCT: 4000K (fixed requirement)
• Flux @ 25°C, 65mA: 35 lm (34–36 lm range acceptable)
• Test Current: 65mA (fixed requirement)
• Viewing Angle: 120° (fixed requirement)
• Package / Case: 4-SMD, Flat Leads (fixed requirement)
• Supplier Device Package: 5630 (fixed requirement)
• Size / Dimension: 5.00 × 3.00 mm (fixed requirement)
• Height - Seated (Max): 0.80 mm (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)
• Packaging: Tape & Reel (TR) (fixed requirement)

Secondary Substitution Criteria (Allowable Variation):

• Forward Voltage (Vf): 2.75V (LM561C) to 2.95V (LM561B Plus) — acceptable within design margin
• Lumens per Watt: 196 lm/W (LM561C) to 182 lm/W (LM561B Plus) — acceptable within efficiency tolerance
• Maximum Current: 200mA (LM561C) to 180mA (LM561B Plus) — acceptable within operational envelope
• Thermal Resistance: 12°C/W (LM561C) to 15°C/W (LM561B Plus) — acceptable within thermal design
• Series: LM561C or LM561B Plus — both qualify as equivalent families
• RoHS Status: RoHS Compliant or ROHS3 Compliant — both acceptable
• Product Status: Active or Not For New Designs — both available for substitution

Substitutes are grouped into two categories: LM561C Direct Equivalents (identical series, packaging variant differences only) and LM561B Plus Parametric Equivalents (higher series tier with acceptable electrical and thermal variance).

Parameter Comparison

Engineering Selection Recommendations

LM561C Direct Equivalents (SPMWHT541ML5XAT0S5, SPMWHT541ML5XATMS5):

These parts maintain identical electrical and thermal characteristics to the main part number SPMWHT541ML5XATKS5. The suffix variation (KS vs. 0S vs. MS) indicates packaging reel configuration differences only. Selection between these three LM561C variants is determined by packaging availability and inventory requirements. SPMWHT541ML5XAT0S5 and SPMWHT541ML5XATMS5 both carry ROHS3 Compliant certification, providing enhanced environmental compliance documentation. SPMWHT541ML5XATMS5 offers the highest inventory level at 25,846 pieces, supporting high-volume production requirements.

LM561B Plus Parametric Equivalents (SPMWHT541MP5WAT0S5, SPMWHT541MP5WATMS5, SPMWHT541MP5WATUS5):

These parts represent the LM561B Plus series tier, which operates at a higher forward voltage (2.95V versus 2.75V) and exhibits lower efficiency (182 lm/W versus 196 lm/W) and reduced maximum current rating (180mA versus 200mA). The thermal resistance increases from 12°C/W to 15°C/W. These parametric differences are acceptable within standard design margins for neutral white 4000K LED applications where the 35-lumen output and 120° viewing angle requirements are maintained.

SPMWHT541MP5WATUS5 carries "Not For New Designs" product status, indicating this part is in mature lifecycle phase. This designation does not preclude its use in existing production lines or legacy designs but signals that Samsung Semiconductor recommends LM561B Plus variants with Active status (SPMWHT541MP5WAT0S5 or SPMWHT541MP5WATMS5) for new design initiatives.

Compliance and Certification:

All substitute parts maintain 2A moisture sensitivity level (4 weeks) and RoHS or ROHS3 compliance. Selection should prioritize parts with Active product status for new designs. SPMWHT541MP5WATMS5 combines Active status with ROHS3 Compliant certification and substantial inventory availability (2,088 pieces).

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541ML5XAT0S5 and SPMWHT541ML5XATMS5 be used interchangeably with SPMWHT541ML5XATKS5?

A: Yes. These three part numbers are direct equivalents within the LM561C series. All three deliver identical electrical performance: 2.75V forward voltage, 65mA test current, 35 lumens at 4000K, 196 lm/W efficiency, and 12°C/W thermal resistance. The suffix variation (KS, 0S, MS) reflects packaging reel configuration only. Substitution is electrically and mechanically transparent.

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

A: The LM561B Plus series operates at 2.95V forward voltage compared to 2.75V for LM561C, resulting in 0.20V higher voltage drop. LM561B Plus delivers 182 lm/W efficiency versus 196 lm/W for LM561C, representing a 7.1% efficiency reduction. Maximum current rating is 180mA for LM561B Plus versus 200mA for LM561C. Thermal resistance increases from 12°C/W to 15°C/W. Despite these differences, both series maintain identical 35-lumen output at 65mA test current and 4000K color temperature, making them parametrically equivalent for applications where the higher voltage and thermal characteristics are acceptable.

Q: Are there any compatibility concerns when substituting LM561B Plus parts?

A: LM561B Plus substitution requires verification that the circuit design accommodates the 0.20V higher forward voltage and 3°C/W increased thermal resistance. For series-connected LED strings, the cumulative voltage increase must not exceed the power supply headroom. Thermal design must account for the higher thermal resistance, particularly in high-ambient-temperature environments. The 20mA lower maximum current rating (180mA versus 200mA) does not affect standard 65mA test current operation but may impact designs operating at elevated currents.

Q: What does "Not For New Designs" product status mean for SPMWHT541MP5WATUS5?

A: "Not For New Designs" indicates that Samsung Semiconductor has transitioned this part number to mature lifecycle status. The part remains available and functional for existing production lines and legacy designs. However, Samsung recommends that new design initiatives select from Active status alternatives such as SPMWHT541MP5WAT0S5 or SPMWHT541MP5WATMS5 to ensure long-term supply continuity and access to the latest manufacturing process improvements.

Q: How do packaging variants (KS, 0S, MS suffixes) affect PCB assembly?

A: Packaging suffixes indicate reel configuration and tape specifications for automated pick-and-place equipment. KS, 0S, and MS variants are mechanically and electrically identical 5630 package LEDs in 4-SMD flat-lead configuration. The suffix difference does not affect PCB footprint, reflow soldering profile, or electrical performance. Assembly equipment compatibility depends on reel format support, not the electrical characteristics of the LED itself.

Q: Can I mix LM561C and LM561B Plus parts in the same production batch?

A: Mixing is not recommended for applications requiring consistent color temperature, brightness, or thermal behavior across units. Although both series deliver 35 lumens at 4000K, the LM561B Plus higher forward voltage (2.95V) and lower efficiency (182 lm/W) may introduce measurable variations in circuit current distribution and thermal performance when combined with LM561C parts (2.75V, 196 lm/W) in parallel or series configurations. Maintain part number consistency within a single production batch to ensure uniform electrical and optical characteristics.

Q: What inventory considerations apply when selecting substitutes?

A: SPMWHT541ML5XATMS5 offers the highest inventory at 25,846 pieces, followed by SPMWHT541MP5WATUS5 at 25,490 pieces. For immediate availability and high-volume requirements, these two options provide substantial stock. SPMWHT541ML5XAT0S5 maintains 14,120 pieces. If Active product status is required for new designs, SPMWHT541ML5XATMS5 (LM561C, Active, 25,846 pcs) is the optimal choice, combining direct electrical equivalence with maximum inventory and current lifecycle status.