SPMWHT541MD5WATHSD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WATHSD is a Samsung Semiconductor LM561B series white neutral LED designed for surface mount applications. This component operates at 4000K color temperature with a forward voltage of 2.95V and test current of 65mA, delivering 34lm at 25°C. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. This obsolescence necessitates identification of functionally equivalent substitute components that maintain electrical and mechanical compatibility for existing applications or redesigns.

Substiute Parts

SPMWHT541MD5WATHSD

Samsung Semiconductor, Inc.In Stock: 930SPMWHT541MD5WATHSD Datasheet

Current PartRFQ

SPMWHT541MP5WAT0S5

Samsung Semiconductor, Inc.In Stock: 5783SPMWHT541MP5WAT0S5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WATHSD is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• Color and CCT (White, Neutral, 4000K)
• Forward voltage (2.95V typical)
• Test current (65mA)
• Flux output range (32–36lm at 25°C, 65mA)
• CRI (80)

Mechanical Compatibility:

• Package type (4-SMD, 5630 form factor)
• Mounting type (Surface Mount)
• Viewing angle (120°)
• Physical dimensions (5.00mm × 3.00mm)

Regulatory & Environmental:

• RoHS compliance
• MSL rating (2A, 4 Weeks)

The substitute part SPMWHT541MP5WAT0S5 maintains all critical electrical parameters within acceptable tolerances and shares identical package geometry and environmental ratings. Differences in product status, maximum current rating, thermal resistance, and height do not preclude substitution when the application operates within the specified test current and thermal envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAT0S5

The SPMWHT541MP5WAT0S5 is the direct substitute for SPMWHT541MD5WATHSD. Selection is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match or exceed the original part specification. Forward voltage, test current, color temperature, and CRI are identical. Flux output at test conditions (35lm) falls within the acceptable tolerance band of the original part (32–36lm).

Mechanical Compatibility: Both parts use identical 5630 package geometry (5.00mm × 3.00mm) and 4-SMD surface mount configuration. The substitute features a lower maximum height (0.80mm vs. 0.90mm), which presents no compatibility risk for existing PCB layouts and may provide clearance advantages in space-constrained designs.

Regulatory Compliance: Both parts carry RoHS compliance certification and identical MSL ratings (2A, 4 Weeks), ensuring equivalent handling and storage requirements.

Product Status Advantage: The substitute part carries Active product status, ensuring continued availability and supply chain stability compared to the obsolete original part.

Performance Enhancement: The substitute demonstrates improved thermal resistance (15°C/W vs. 16°C/W) and higher luminous efficacy (182 lm/W vs. 177 lm/W), providing marginal thermal and efficiency benefits without requiring circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAT0S5 be used as a direct replacement for SPMWHT541MD5WATHSD without PCB modification?

A: Yes. Both parts share identical electrical specifications at the test current (65mA, 2.95V forward voltage) and use the same 5630 package footprint. The substitute's lower profile height (0.80mm vs. 0.90mm) is mechanically compatible with existing PCB layouts designed for the original part.

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

A: Both designations refer to 4-SMD surface mount packages with 5630 form factor. The functional and electrical characteristics are equivalent for this product category. The lead configuration difference does not affect electrical performance or PCB assembly compatibility.

Q: Why does the substitute part have a higher maximum current rating (180mA vs. 150mA)?

A: The LM561B Plus series (substitute) represents an improved product generation with enhanced thermal management and current handling capability. Applications operating at or below the original part's test current (65mA) are unaffected by this specification difference.

Q: Are there any thermal design considerations when substituting this part?

A: The substitute part exhibits superior thermal resistance (15°C/W vs. 16°C/W), which is advantageous. Applications designed for the original part's thermal characteristics will operate within acceptable limits with the substitute. No thermal redesign is required.

Q: Is the flux output difference (34lm vs. 35lm) significant for optical design?

A: Both parts operate within the same tolerance band (32–36lm at 25°C, 65mA test conditions). The 1lm difference represents approximately 3% variation and falls within normal manufacturing tolerance. Optical designs based on the original part specification remain valid with the substitute.

Q: What is the impact of the substitute part's Active product status?

A: Active status ensures continued manufacturing, availability, and supply chain support. The original part's "Not For New Designs" status indicates end-of-life, making the Active substitute the appropriate choice for both new designs and legacy product support.

Q: Are moisture sensitivity and handling requirements identical?

A: Yes. Both parts carry MSL 2A rating (4 Weeks), requiring identical moisture control, storage, and handling procedures. No changes to component management protocols are necessary.