SPMWHT541MD5WAQ0SD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAQ0SD is a Samsung Semiconductor LM561B series cool white LED (5700K) designed for surface mount lighting applications. This component features a 5630 package format with 4-SMD flat lead exposed pad configuration, delivering 35 lumens at 65mA test current with 2.95V forward voltage.

The SPMWHT541MD5WAQ0SD carries a "Not For New Designs" product status, indicating Samsung has transitioned this model to end-of-life. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this LED specification remains functionally required.

Substiute Parts

SPMWHT541MD5WAQ0SD

Samsung Semiconductor, Inc.In Stock: 1109SPMWHT541MD5WAQ0SD Datasheet

Current PartRFQ

SPMWHT541MP5WAQ0S5

Samsung Semiconductor, Inc.In Stock: 1106SPMWHT541MP5WAQ0S5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAQ0SD is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Series family (LM561B or LM561B Plus)
• Color and CCT (White, Cool 5700K)
• Package format (5630, 4-SMD configuration)
• Physical dimensions (5.00mm × 3.00mm footprint)
• Forward voltage (2.95V typical)
• Test current rating (65mA)
• Viewing angle (120°)
• CRI (80)
• RoHS compliance and MSL classification

Allowable Variation Parameters:

• Flux output (within specification range tolerance)
• Lumens/Watt efficiency (higher efficiency acceptable)
• Maximum current rating (equal or higher acceptable)
• Thermal resistance (lower values acceptable)
• Height seated maximum (minor reductions acceptable)
• Product status (Active status preferred for new inventory)

The SPMWHT541MP5WAQ0S5 qualifies as a direct substitute based on identical matching across all mandatory parameters and improved performance characteristics in allowable variation categories.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAQ0S5

The SPMWHT541MP5WAQ0S5 is the qualified substitute for SPMWHT541MD5WAQ0SD applications. Selection rationale is based on the following engineering factors:

Product Status Advantage: The substitute carries Active product status, ensuring continued manufacturing availability and supply chain stability. The main part's "Not For New Designs" designation indicates Samsung's transition away from this model, making the Active substitute the appropriate long-term component choice.

Electrical Compatibility: Both parts operate at identical forward voltage (2.95V) and test current (65mA), ensuring direct circuit compatibility without modification to drive electronics or current-limiting resistor values.

Optical Equivalence: Both parts deliver identical color temperature (5700K cool white) and CRI (80), maintaining color rendering characteristics. Flux output at test current differs by 1 lumen (36 lm vs. 35 lm), which falls within normal manufacturing tolerance and is functionally equivalent.

Mechanical Fit: Both parts use the 5630 package format with identical footprint dimensions (5.00mm × 3.00mm). The substitute's reduced height (0.80mm vs. 0.90mm) presents no compatibility risk and may improve clearance in space-constrained designs.

Thermal Performance: The substitute's lower thermal resistance (15°C/W vs. 16°C/W) provides improved heat dissipation, supporting higher reliability in thermal-limited applications.

Compliance Alignment: Both parts maintain identical RoHS compliance and MSL classification (2A, 4 Weeks), ensuring equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAQ0S5 be used as a direct replacement for SPMWHT541MD5WAQ0SD without circuit modification?

A: Yes. Both parts operate at 2.95V forward voltage and 65mA test current with identical electrical characteristics. No changes to drive circuitry, current-limiting resistors, or power supply specifications are required.

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

A: Both descriptions refer to the same 5630 package format with 4-SMD configuration. The terminology variation reflects different documentation conventions from Samsung. The physical package, footprint, and solder pad layout are identical.

Q: Is the 1 lumen difference in flux output (35 lm vs. 36 lm) significant?

A: No. The 1 lumen difference represents approximately 2.9% variation and falls within normal LED manufacturing tolerance. Both parts are specified within their respective tolerance ranges (33–37 lm for main part, 35–37 lm for substitute). Optical performance is functionally equivalent.

Q: Why is the substitute part's maximum current rating higher (180mA vs. 150mA)?

A: The LM561B Plus series incorporates improved thermal and electrical design compared to the standard LM561B. The higher maximum current rating reflects enhanced capability. At the standard 65mA test current, both parts operate identically. The higher rating provides additional design margin for applications requiring increased current headroom.

Q: Does the reduced height of the substitute part (0.80mm vs. 0.90mm) affect PCB assembly or reflow soldering?

A: No. The 0.10mm height reduction is within standard SMD assembly tolerances and does not affect reflow soldering profiles, pick-and-place equipment compatibility, or PCB layout. The reduced height may improve clearance in space-constrained applications.

Q: Are storage and handling requirements identical between the two parts?

A: Yes. Both parts carry identical MSL classification (2A, 4 Weeks) and RoHS compliance status. Storage conditions, moisture sensitivity precautions, and handling procedures are equivalent.

Q: What is the significance of the "Active" product status for the substitute part?

A: Active status indicates Samsung continues manufacturing and supporting the SPMWHT541MP5WAQ0S5. This ensures long-term supply availability, consistent quality, and continued technical support. The main part's "Not For New Designs" status signals end-of-life transition, making the Active substitute the appropriate choice for ongoing production and future applications.