SPMWHT541MD5WAUHSB LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAUHSB is a Samsung Semiconductor LM561B series warm white LED designed for surface mount lighting applications. This component operates at 3500K color temperature with a forward voltage of 2.95V and delivers 29 lumens at 65mA test current. The device features a 4-SMD flat lead exposed pad package in 5630 form factor with 120° viewing angle and 80 CRI rating.

The SPMWHT541MD5WAUHSB carries a "Not For New Designs" product status, indicating Samsung has transitioned this model line. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for existing production requirements.

Substiute Parts

SPMWHT541MD5WAUHSB

Samsung Semiconductor, Inc.In Stock: 1212SPMWHT541MD5WAUHSB Datasheet

Current PartRFQ

SPMWHT541MP5WAU0S4

Samsung Semiconductor, Inc.In Stock: 1071SPMWHT541MP5WAU0S4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAUHSB is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Series family: LM561B or LM561B Plus
• Color specification: White, Warm
• Correlated color temperature: 3500K
• Forward voltage: 2.95V (typical)
• Test current: 65mA
• Viewing angle: 120°
• Package type: 4-SMD, 5630 form factor
• Mounting: Surface mount
• RoHS compliance: Required
• MSL rating: 2A or better

Secondary Compatibility Factors:

• Luminous flux tolerance: Parts must operate within acceptable lumen output range at specified test conditions
• Maximum current rating: Must support circuit design requirements
• Thermal characteristics: Package thermal resistance must be compatible with thermal management design
• Physical dimensions: Height and footprint must fit PCB layout constraints

The SPMWHT541MP5WAU0S4 qualifies as a direct substitute based on matching all primary criteria while offering improved performance characteristics in the LM561B Plus variant.

Parameter Comparison

Engineering Selection Recommendations

For Existing Production Continuity:

The SPMWHT541MP5WAU0S4 is the qualified substitute for SPMWHT541MD5WAUHSB. Both components share identical electrical operating parameters (2.95V forward voltage, 65mA test current, 3500K color temperature, 80 CRI) and mechanical compatibility (5630 package, 120° viewing angle, surface mount configuration).

Product Status Consideration:

The main part carries "Not For New Designs" status, while the substitute operates under "Active" status. This transition indicates Samsung's continued support for the LM561B Plus variant, ensuring long-term component availability and supply chain stability.

Performance Differential:

The substitute delivers measurably higher luminous flux (32 lm vs. 29 lm at 65mA) and improved efficacy (167 lm/W vs. 151 lm/W). These enhancements result from the Plus variant optimization and do not introduce electrical incompatibility. The substitute's maximum current rating increases to 180mA (from 150mA), providing additional design margin.

Thermal and Physical Compatibility:

The substitute exhibits superior thermal characteristics (15°C/W vs. 16°C/W) and reduced package height (0.80mm vs. 0.90mm), both favorable for thermal management and space-constrained layouts. These dimensional differences remain within standard PCB assembly tolerances.

Compliance Verification:

Both components maintain RoHS compliance and identical MSL ratings (2A, 4 weeks), ensuring manufacturing process compatibility and moisture handling requirements remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAU0S4 directly replace SPMWHT541MD5WAUHSB in existing designs?

A: Yes. Both components operate at identical forward voltage (2.95V), test current (65mA), color temperature (3500K), and viewing angle (120°). The 5630 package footprint and surface mount configuration are mechanically identical. No circuit redesign is required.

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 electrical and thermal performance remains equivalent for standard PCB assembly processes.

Q: Why does the substitute show higher luminous flux (32 lm vs. 29 lm)?

A: The SPMWHT541MP5WAU0S4 represents the LM561B Plus variant, which incorporates manufacturing improvements that increase light output efficiency. At identical test conditions (65mA, 25°C), the Plus variant delivers approximately 10% higher flux. This enhancement is a direct result of component optimization and does not affect electrical compatibility.

Q: Is the reduced package height (0.80mm vs. 0.90mm) a concern for PCB assembly?

A: No. The 0.10mm height reduction is within standard PCB assembly tolerances and represents an improvement for space-constrained applications. Existing pick-and-place programs and reflow profiles require no adjustment.

Q: What does "Not For New Designs" status mean for the main part?

A: This designation indicates Samsung has concluded active development and marketing of the SPMWHT541MD5WAUHSB. The component remains available from existing inventory, but Samsung recommends new designs adopt the active LM561B Plus variant (SPMWHT541MP5WAU0S4) for long-term supply assurance.

Q: Are there any thermal management differences between these parts?

A: The substitute exhibits slightly better thermal performance (15°C/W vs. 16°C/W). This improvement allows for marginally higher ambient operating temperatures or reduced heatsinking requirements. Existing thermal designs remain fully compatible.

Q: Do moisture sensitivity levels differ between these components?

A: No. Both components carry identical MSL 2A ratings (4 weeks maximum floor life). Moisture handling, storage, and reflow procedures remain unchanged.

Q: What is the maximum current rating difference, and does it affect circuit design?

A: The substitute supports 180mA maximum current versus 150mA for the main part. Existing designs operating at 65mA test current are unaffected. The higher maximum rating provides additional design margin for future applications requiring increased current.