SPMWHT541MD5WAUMS1 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAUMS1 is a Samsung Semiconductor LM561B series warm white LED in 5630 surface mount package. This component is classified as Not For New Designs, indicating it has reached end-of-life status in Samsung's product portfolio. The part delivers warm white light at 3500K color temperature with a forward voltage of 2.9V at 65mA test current. Due to its discontinued status, identifying compatible substitute parts from the active LM561B product line is essential for ongoing production requirements and design continuity.

Substiute Parts

SPMWHT541MD5WAUMS1

Samsung Semiconductor, Inc.In Stock: 1054SPMWHT541MD5WAUMS1 Datasheet

Current PartRFQ

SPMWHT541MP5WAU0S5

Samsung Semiconductor, Inc.In Stock: 3242SPMWHT541MP5WAU0S5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAUMS1 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Series family: LM561B (including LM561B Plus variants)
• Color specification: White, Warm
• CCT: 3500K
• Package type: 5630 (4-SMD surface mount)
• Physical dimensions: 5.00mm x 3.00mm footprint
• Mounting compatibility: Surface mount

Secondary Compatibility Parameters:

• Forward voltage range: 2.9V to 2.95V (within typical operating tolerance)
• Test current: 65mA nominal
• Maximum current rating: 150mA or higher
• Thermal resistance: 15°C/W to 16°C/W
• MSL rating: 2A or better

The SPMWHT541MP5WAU0S5 qualifies as a direct substitute based on identical color temperature, package geometry, mounting type, and electrical operating point. This part represents an active product variant within the same LM561B family with enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SPMWHT541MP5WAU0S5

The SPMWHT541MP5WAU0S5 is the qualified substitute for SPMWHT541MD5WAUMS1 based on the following engineering factors:

1. Product Status Alignment: The substitute is classified as Active, providing long-term supply continuity and manufacturing support, whereas the main part is Not For New Designs.

2. Electrical Compatibility: Forward voltage differential of 0.05V (2.9V vs 2.95V) is within acceptable tolerance for 3500K warm white LED applications. Test current remains identical at 65mA.

3. Mechanical Compatibility: Identical 5630 package footprint (5.00mm x 3.00mm) ensures direct PCB layout compatibility without redesign. Height reduction from 0.90mm to 0.80mm provides design flexibility for space-constrained applications.

4. Thermal Performance: Improved thermal resistance (15°C/W vs 16°C/W) enhances heat dissipation characteristics, supporting higher reliability in thermal-sensitive environments.

5. Regulatory Compliance: ROHS3 compliance exceeds the RoHS Compliant status of the original part, meeting current environmental standards.

6. Inventory Availability: The substitute part maintains higher stock levels (3192 Pcs vs 1003 Pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q1: Can SPMWHT541MP5WAU0S5 be used as a direct drop-in replacement for SPMWHT541MD5WAUMS1?

A: Yes. Both parts share identical color temperature (3500K), package type (5630), footprint dimensions (5.00mm x 3.00mm), and test current (65mA). The 0.05V forward voltage difference and improved thermal characteristics present no compatibility issues for standard LED circuit applications.

Q2: What is the significance of the "Plus" designation in LM561B Plus?

A: The LM561B Plus variant represents an enhanced product line within the same series. It includes improved specifications such as higher maximum current rating (180mA vs 150mA), better thermal resistance (15°C/W vs 16°C/W), and documented luminous flux output (34lm at 65mA test current).

Q3: Are there any PCB layout modifications required when substituting SPMWHT541MP5WAU0S5 for SPMWHT541MD5WAUMS1?

A: No PCB layout modifications are required. Both parts use identical 5630 package footprints and surface mount configuration. The substitute part's lower height (0.80mm vs 0.90mm) may provide additional clearance in space-constrained designs but does not necessitate layout changes.

Q4: How does the forward voltage difference of 0.05V affect circuit design?

A: The 0.05V difference (2.9V to 2.95V) is negligible in typical LED driver circuits. Standard current-limiting resistor calculations and constant-current LED drivers accommodate this variance within normal operating tolerances. No circuit redesign is required.

Q5: What is the impact of improved thermal resistance on long-term reliability?

A: Lower thermal resistance (15°C/W vs 16°C/W) indicates more efficient heat transfer from the LED junction to the PCB. This reduces junction temperature under identical operating conditions, extending LED lifespan and improving color stability over extended operation.

Q6: Does the substitute part maintain the same moisture sensitivity level?

A: Yes. Both SPMWHT541MD5WAUMS1 and SPMWHT541MP5WAU0S5 are rated MSL 2A (4 Weeks), requiring identical moisture control and storage protocols during manufacturing and assembly.

Q7: Is the substitute part suitable for new product designs?

A: Yes. SPMWHT541MP5WAU0S5 carries Active product status, making it appropriate for new designs. The original part (Not For New Designs) should be replaced with this substitute in all new development projects.