Equivalent & Substitute Parts for SPMWHT541MP7WARUS0

Part Overview

The SPMWHT541MP7WARUS0 is a Samsung Semiconductor LM561B Plus white LED in 5630 package format, rated for cool white 5000K color temperature. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part operates at 2.95V forward voltage with 65mA test current and delivers 120° viewing angle in a 4-SMD flat lead configuration. Due to its discontinued design status, equivalent and substitute parts from the active LM561B Plus and LM281B+ series are available to support ongoing production requirements and design transitions.

Substiute Parts

SPMWHT541MP7WARUS0

Samsung Semiconductor, Inc.In Stock: 892SPMWHT541MP7WARUS0 Datasheet

Current PartRFQ

SPMWHT541MP7WARMS0

Samsung Semiconductor, Inc.In Stock: 25982SPMWHT541MP7WARMS0 Datasheet

SimilarRFQ

SPMWH1228FD7W2R0SJ

Samsung Semiconductor, Inc.In Stock: 835SPMWH1228FD7W2R0SJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD7W2RKSJ

Samsung Semiconductor, Inc.In Stock: 719SPMWH1228FD7W2RKSJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD7W2RMSJ

Samsung Semiconductor, Inc.In Stock: 1077SPMWH1228FD7W2RMSJ Datasheet

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SPMWH1228FD7WAR0SJ

Samsung Semiconductor, Inc.In Stock: 754SPMWH1228FD7WAR0SJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD7WARKSJ

Samsung Semiconductor, Inc.In Stock: 794SPMWH1228FD7WARKSJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD7WARMSJ

Samsung Semiconductor, Inc.In Stock: 1176SPMWH1228FD7WARMSJ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MP7WARUS0 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color specification: White, Cool 5000K
• Package format: 4-SMD, Flat Leads in 5630 supplier package
• Mechanical compatibility: 5.00mm x 3.00mm footprint, 0.80mm maximum seated height
• Electrical compatibility: Forward voltage range 2.9V to 3.0V, maximum current rating ≥180mA
• Optical specification: 120° viewing angle, CRI ≥90
• Compliance: RoHS3 Compliant status for active designs

Direct Equivalent (Same Series): SPMWHT541MP7WARMS0 is a direct equivalent within the LM561B Plus series, maintaining identical electrical and optical specifications while offering active product status and improved thermal performance (15°C/W vs. 20°C/W).

Parametric Equivalents (Cross-Series): The LM281B+ series parts (SPMWH1228FD7W2R0SJ, SPMWH1228FD7W2RKSJ, SPMWH1228FD7W2RMSJ, SPMWH1228FD7WAR0SJ, SPMWH1228FD7WARKSJ, SPMWH1228FD7WARMSJ) provide functional equivalence with modified electrical parameters. These parts operate at higher test current (150mA vs. 65mA) and forward voltage variants (2.9V or 3.0V), requiring circuit-level verification for current-limiting and thermal management compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended for Existing Designs):

SPMWHT541MP7WARMS0 is the primary substitute for SPMWHT541MP7WARUS0. This part maintains identical electrical specifications (2.95V, 65mA test current) and optical characteristics (5000K, 90 CRI, 120° viewing angle) while offering active product status and superior thermal performance (15°C/W vs. 20°C/W). The part is ROHS3 Compliant, meeting current regulatory requirements. Inventory availability is significantly higher (25,904 pcs vs. 845 pcs), ensuring supply continuity.

For Cross-Series Substitution (Requires Circuit Verification):

The LM281B+ series parts provide functional equivalence with modified electrical parameters. These parts operate at higher test current (150mA vs. 65mA) and are available in two forward voltage variants:

• 2.9V variants (SPMWH1228FD7W2R0SJ, SPMWH1228FD7W2RKSJ, SPMWH1228FD7W2RMSJ): Closest voltage alignment to the original 2.95V specification
• 3.0V variants (SPMWH1228FD7WAR0SJ, SPMWH1228FD7WARKSJ, SPMWH1228FD7WARMSJ): Require verification of current-limiting circuit tolerance

All LM281B+ parts are ROHS3 Compliant and Active status. Thermal resistance is higher (25°C/W vs. 20°C/W), requiring thermal management review in high-density applications. Maximum current rating is 200mA, providing operational margin above the original 180mA specification.

Compliance Considerations:

The original part carries RoHS Compliant status. All substitute parts meet ROHS3 Compliant requirements, which supersedes the original RoHS designation. For applications requiring REACH compliance documentation, the LM281B+ series parts carry explicit REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q1: Can SPMWHT541MP7WARMS0 be used as a direct drop-in replacement for SPMWHT541MP7WARUS0?

A: Yes. SPMWHT541MP7WARMS0 is a direct equivalent within the LM561B Plus series. It maintains identical forward voltage (2.95V), test current (65mA), maximum current (180mA), color temperature (5000K), CRI (90), viewing angle (120°), and package dimensions (5630, 5.00mm x 3.00mm, 0.80mm height). The primary differences are active product status and improved thermal resistance (15°C/W vs. 20°C/W), which are beneficial for thermal management. No circuit modifications are required.

Q2: What are the key differences between LM561B Plus and LM281B+ series substitutes?

A: The LM281B+ series operates at higher test current (150mA vs. 65mA) and offers two forward voltage options (2.9V or 3.0V vs. fixed 2.95V). Maximum current rating is higher (200mA vs. 180mA). Thermal resistance is higher (25°C/W vs. 20°C/W). All other parameters—color temperature (5000K), CRI (90), viewing angle (120°), package format (5630), and mechanical dimensions—remain identical. Cross-series substitution requires verification that the circuit's current-limiting design accommodates the higher operating current.

Q3: Are there inventory or supply differences between substitute options?

A: Yes. SPMWHT541MP7WARMS0 has significantly higher inventory (25,904 pcs) compared to the original part (845 pcs). LM281B+ variants range from 660 to 1,104 pcs. For supply continuity, SPMWHT541MP7WARMS0 is the preferred choice. If cross-series substitution is necessary, SPMWH1228FD7WARMSJ offers the highest LM281B+ inventory (1,104 pcs).

Q4: Do the substitute parts meet current RoHS and regulatory requirements?

A: Yes. All substitute parts are ROHS3 Compliant, which supersedes the original RoHS Compliant designation. The LM281B+ series additionally carries explicit REACH Unaffected status. Both designations meet current regulatory requirements for new designs and ongoing production.

Q5: What thermal management considerations apply to LM281B+ substitutes?

A: LM281B+ parts have higher thermal resistance (25°C/W vs. 20°C/W for the original part and 15°C/W for SPMWHT541MP7WARMS0). In applications with thermal constraints, verify that the higher thermal resistance does not exceed junction temperature limits. The higher test current (150mA vs. 65mA) also generates increased power dissipation, requiring thermal pathway review in high-density LED arrays.

Q6: Can I use the 3.0V LM281B+ variants (WAR0SJ, WARKSJ, WARMSJ) instead of the 2.9V variants (W2R0SJ, W2RKSJ, W2RMSJ)?

A: Substitution between voltage variants depends on circuit design. The 0.1V difference (2.9V vs. 3.0V) represents approximately 3.4% voltage increase. If the circuit uses a fixed current source or precision current-limiting resistor, this difference is negligible. If the circuit relies on voltage-dependent current limiting, verify that the resistor value and supply voltage accommodate the higher forward voltage without exceeding maximum current (200mA). The 2.9V variants are closer to the original 2.95V specification and are preferred for direct substitution.

Q7: Are the mechanical footprints and PCB layouts identical across all substitute parts?

A: Yes. All substitute parts share identical mechanical specifications: 5630 package format, 5.00mm x 3.00mm footprint, 0.80mm maximum seated height, 4-SMD flat lead configuration, and surface mount mounting type. PCB layouts and reflow profiles are interchangeable without modification.

Q8: What is the product status significance for design decisions?

A: The original part (SPMWHT541MP7WARUS0) is marked "Not For New Designs," indicating end-of-life status. All substitute parts are marked "Active," confirming ongoing manufacturing and long-term availability. For new designs, active-status parts are required. For legacy production support, the direct equivalent SPMWHT541MP7WARMS0 is the recommended choice to maintain design continuity while ensuring supply security.