SPMWHT541MD5WAWMSB LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAWMSB is a Samsung Semiconductor LM561B series warm white LED designed for lighting applications. This component operates at 2700K color temperature with a forward voltage of 2.95V and test current of 65mA, delivering 28 lumens at 146 lm/W efficiency. The device features a 120° viewing angle and is packaged in a 4-SMD, flat lead exposed pad configuration (5630 package).

The SPMWHT541MD5WAWMSB carries a "Not For New Designs" product status, indicating Samsung has discontinued active development for this variant. This status necessitates identification of equivalent substitute components that maintain functional compatibility while offering improved availability and performance characteristics.

Substiute Parts

SPMWHT541MD5WAWMSB

Samsung Semiconductor, Inc.In Stock: 1106SPMWHT541MD5WAWMSB Datasheet

Current PartRFQ

SPMWHT541MP5WAWMS4

Samsung Semiconductor, Inc.In Stock: 26064SPMWHT541MP5WAWMS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAWMSB is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Series family: LM561B or LM561B Plus (same base product number SPMWHT541)
• Color and CCT: White, Warm 2700K
• Forward voltage (Typ): 2.95V
• Test current: 65mA
• Viewing angle: 120°
• Mounting type: Surface Mount
• Package type: 4-SMD, 5630 supplier device package
• Compliance: RoHS Compliant, MSL 2A

Allowable Variation Parameters:

• Flux output: May increase (indicating improved efficiency)
• Lumens/Watt: May increase (indicating improved efficiency)
• Maximum current rating: May increase (indicating enhanced thermal capability)
• Physical dimensions: Minor variations permitted within package family constraints
• Thermal resistance: May decrease (indicating improved thermal performance)
• Product status: Active status preferred over "Not For New Designs"

The SPMWHT541MP5WAWMS4 qualifies as a direct substitute based on these criteria. Both components share the LM561B base product number, identical color temperature, voltage, and test current specifications, and both are packaged in the 5630 form factor with surface mount configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SPMWHT541MP5WAWMS4

The SPMWHT541MP5WAWMS4 is the qualified substitute for SPMWHT541MD5WAWMSB applications. Selection rationale is based on the following engineering factors:

Product Status Alignment: The main part carries "Not For New Designs" status, indicating end-of-life for active development. The substitute maintains "Active" status, ensuring continued manufacturing support, supply chain stability, and compliance with current industry standards.

Electrical Compatibility: Both components operate at identical forward voltage (2.95V) and test current (65mA), ensuring direct circuit compatibility without modification to drive electronics or current-limiting resistor calculations. The identical CRI (80) and color temperature (2700K) maintain color rendering and chromaticity specifications.

Performance Enhancement: The substitute delivers measurable improvements in luminous flux (+10.7%) and luminous efficacy (+11.0%) at the same operating current, resulting in higher light output per unit power consumption. Maximum current rating increases from 150mA to 180mA, providing additional thermal and operational headroom.

Thermal Performance: Thermal resistance improves from 16°C/W to 15°C/W, indicating enhanced heat dissipation characteristics. Seated height decreases from 0.90mm to 0.80mm, facilitating integration into space-constrained applications.

Compliance and Certification: Both components maintain identical RoHS compliance and MSL 2A moisture sensitivity ratings, ensuring regulatory and manufacturing process compatibility.

Physical Integration: The substitute exhibits a 0.60mm increase in length (5.60mm vs. 5.00mm) and 0.10mm reduction in height. PCB layout verification is required to confirm dimensional compatibility within the target application. The 5630 package family classification remains unchanged.

Supply Chain Consideration: The substitute demonstrates significantly higher inventory availability (25,996 pcs vs. 1,077 pcs), reducing procurement lead time and supply risk.

Frequently Asked Questions (FAQ)

Q1: Can SPMWHT541MP5WAWMS4 be used as a direct replacement for SPMWHT541MD5WAWMSB without circuit modification?

A: Yes. Both components operate at identical forward voltage (2.95V) and test current (65mA). No changes to current-limiting resistors, drive voltage, or circuit topology are required. The substitute is electrically interchangeable at the specified operating point.

Q2: What is the significance of the "Not For New Designs" status on the main part?

A: This designation indicates Samsung has concluded active development and manufacturing optimization for the SPMWHT541MD5WAWMSB variant. The part remains available from existing inventory but will not receive design updates, process improvements, or extended supply commitments. New designs should incorporate the SPMWHT541MP5WAWMS4 (Active status) to ensure long-term supply continuity and access to manufacturing enhancements.

Q3: Will the increased flux output (28 lm to 31 lm) cause compatibility issues in existing designs?

A: No. The increased luminous output represents an improvement in the same functional parameter. Applications designed for 28 lumens will operate correctly with 31 lumens. If the application includes light-level feedback or dimming control, the system will simply deliver higher brightness at the same drive current. No adverse effects are anticipated.

Q4: Are there physical constraints related to the 0.60mm length increase?

A: The substitute is 0.60mm longer (5.60mm vs. 5.00mm) and 0.10mm shorter in height. PCB layout must be verified to confirm adequate clearance in the component placement area. The 5630 package family classification remains unchanged. Most applications with standard 5630 footprints will accommodate this variation; however, space-constrained designs require dimensional verification.

Q5: What is the difference between "Flat Lead Exposed Pad" and "Flat Leads" package descriptions?

A: Both refer to 4-SMD surface mount configurations within the 5630 package family. The terminology variation reflects minor differences in lead geometry and thermal pad exposure. Both are compatible with standard 5630 PCB footprints and reflow soldering processes. No special handling or equipment modifications are required.

Q6: Does the improved thermal resistance (15°C/W vs. 16°C/W) provide operational advantages?

A: Yes. Lower thermal resistance indicates more efficient heat transfer from the LED junction to the PCB. This allows the substitute to operate at lower junction temperatures under identical ambient conditions, potentially extending operational life and maintaining color stability over extended use periods. The improvement is particularly beneficial in thermally constrained applications or high-ambient-temperature environments.

Q7: Are both components RoHS compliant and suitable for regulated markets?

A: Yes. Both SPMWHT541MD5WAWMSB and SPMWHT541MP5WAWMS4 carry RoHS Compliant certification and identical MSL 2A (4 Weeks) moisture sensitivity ratings. Both are suitable for deployment in regulated markets requiring RoHS compliance. Moisture handling procedures during storage and assembly remain identical.

Q8: What inventory considerations should guide the substitution decision?

A: The substitute demonstrates significantly higher inventory availability (25,996 pcs vs. 1,077 pcs). For new production runs or long-term supply requirements, the substitute provides superior supply chain stability and reduced procurement lead time. The main part's limited inventory may constrain future replenishment cycles.