SPMWHT541MD5WAT0SD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAT0SD is a Samsung Semiconductor LM561B series neutral white LED (4000K) designed for surface mount applications in lighting systems. This component delivers 34 lumens at 65mA test current with a forward voltage of 2.95V and a 120° viewing angle. The part is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. This status necessitates identification of functionally equivalent substitute components to maintain design continuity and ensure supply chain availability for existing applications and legacy system support.

Substiute Parts

SPMWHT541MD5WAT0SD

Samsung Semiconductor, Inc.In Stock: 996SPMWHT541MD5WAT0SD Datasheet

Current PartRFQ

SPMWHT541MP5WAT0S5

Samsung Semiconductor, Inc.In Stock: 5783SPMWHT541MP5WAT0S5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAT0SD is determined by strict equivalence across the following critical parameters:

Color and Correlated Color Temperature (CCT): Both the main part and substitute must be White, Neutral 4000K to maintain color consistency in lighting applications.

Electrical Performance: Forward voltage (2.95V typical), test current (65mA), and flux output (34 lumens at 25°C) must remain within specified tolerances to ensure circuit compatibility and photometric performance.

Luminous Efficacy: The lumens-per-watt rating (177 lm/W for the main part) establishes the efficiency baseline. Substitute parts with equal or superior efficacy are acceptable.

Color Rendering Index (CRI): A CRI of 80 is required to maintain color fidelity in the application.

Optical and Mechanical Characteristics: Viewing angle (120°), package type (4-SMD with flat leads), supplier device package designation (5630), and physical dimensions (5.00mm × 3.00mm) must match to ensure optical performance and PCB compatibility.

Compliance and Environmental Ratings: RoHS compliance and MSL rating (2A, 4 Weeks) must be maintained.

The SPMWHT541MP5WAT0S5 meets all these criteria and is identified as the primary substitute.

Parameter Comparison

Engineering Selection Recommendations

The SPMWHT541MP5WAT0S5 is the qualified substitute for the SPMWHT541MD5WAT0SD based on the following engineering criteria:

Product Status Alignment: The main part is classified as "Not For New Designs," while the substitute is Active. This status transition ensures continued supply chain availability and manufacturer support for the substitute component.

Electrical and Photometric Equivalence: Both parts operate at identical forward voltage (2.95V) and test current (65mA), with flux output within compatible ranges (34 lm vs. 35 lm). The substitute demonstrates superior luminous efficacy (182 lm/W vs. 177 lm/W), indicating improved energy efficiency without requiring circuit redesign.

Mechanical and Optical Compatibility: Identical viewing angle (120°), package designation (5630), and PCB footprint dimensions (5.00mm × 3.00mm) ensure direct substitution on existing assemblies. The substitute's reduced maximum height (0.80mm vs. 0.90mm) provides additional design margin for space-constrained applications.

Thermal Performance: The substitute exhibits superior thermal characteristics (15°C/W vs. 16°C/W), enabling more efficient heat dissipation in high-density lighting arrays.

Regulatory and Environmental Compliance: Both parts maintain RoHS compliance and identical MSL ratings (2A, 4 Weeks), ensuring no change to handling, storage, or assembly procedures.

Frequently Asked Questions (FAQ)

Q: Can the SPMWHT541MP5WAT0S5 be used as a direct replacement for the SPMWHT541MD5WAT0SD in existing designs?

A: Yes. Both parts share identical electrical characteristics (2.95V forward voltage, 65mA test current), color specification (White, Neutral 4000K), CRI (80), viewing angle (120°), and package footprint (5630, 5.00mm × 3.00mm). No circuit modifications are required.

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

A: Both designations refer to 4-SMD surface mount packages with 5630 supplier device package classification. The functional and dimensional specifications are compatible for PCB assembly purposes.

Q: Does the substitute part have a higher maximum current rating?

A: Yes. The SPMWHT541MP5WAT0S5 has a maximum current rating of 180mA compared to 150mA for the main part. At the standard test current of 65mA, both parts operate identically. The higher maximum rating on the substitute provides additional operational headroom.

Q: Is the reduced height of the substitute part (0.80mm vs. 0.90mm) a concern?

A: No. The reduced height is advantageous for space-constrained applications and does not affect electrical or optical performance. PCB assembly processes accommodate this variation within standard tolerances.

Q: Are there any differences in handling or storage requirements?

A: No. Both parts carry identical MSL ratings (2A, 4 Weeks) and RoHS compliance status. Handling, storage, and assembly procedures remain unchanged.

Q: Why does the substitute part have superior thermal resistance (15°C/W vs. 16°C/W)?

A: The improved thermal resistance of the SPMWHT541MP5WAT0S5 reflects design enhancements in the LM561B Plus series. This characteristic benefits high-density lighting applications by reducing junction temperature under sustained operation.