SPMWHT541MD5WAR0SD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAR0SD is a Samsung Semiconductor LM561B series cool white LED (5000K) designed for surface mount lighting applications. This component features a 5630 package format with 4-SMD flat lead exposed pad configuration, delivering 35lm at 65mA test current with 2.95V forward voltage and 120° viewing angle.

The SPMWHT541MD5WAR0SD carries a "Not For New Designs" product status. This designation indicates the part is in mature production phase with limited design support. Identifying equivalent substitute parts ensures design continuity, supply chain flexibility, and access to components with active product status and improved performance characteristics.

Substiute Parts

SPMWHT541MD5WAR0SD

Samsung Semiconductor, Inc.In Stock: 1220SPMWHT541MD5WAR0SD Datasheet

Current PartRFQ

SPMWHT541MP5WAR0S5

Samsung Semiconductor, Inc.In Stock: 17963SPMWHT541MP5WAR0S5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAR0SD is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Series family (LM561B)
• Color and correlated color temperature (White, Cool, 5000K)
• Package type and supplier device package (4-SMD, 5630)
• Mounting type (Surface Mount)
• Viewing angle (120°)
• CRI rating (80)
• Electrical compatibility: Forward voltage (2.95V nominal), test current (65mA), and maximum current rating

Performance Tolerance Parameters:

• Luminous flux at 25°C and 65mA test current must fall within acceptable operational range
• Lumens/Watt efficiency at rated current
• Thermal resistance of package

Compliance Parameters:

• RoHS compliance status
• Moisture sensitivity level (MSL 2A)
• ECCN and HTSUS classifications

The SPMWHT541MP5WAR0S5 qualifies as a direct substitute based on full alignment with all mandatory parameters and improved performance in secondary characteristics.

Parameter Comparison

Engineering Selection Recommendations

SPMWHT541MP5WAR0S5 as Primary Substitute:

The SPMWHT541MP5WAR0S5 is the qualified substitute for SPMWHT541MD5WAR0SD based on the following engineering criteria:

1. Product Status Alignment: The substitute carries Active product status, whereas the main part is designated "Not For New Designs." This transition ensures long-term design support and supply chain continuity.

2. Electrical Compatibility: Both parts operate at identical forward voltage (2.95V) and test current (65mA), ensuring direct circuit compatibility without redesign of current-limiting resistor networks or power supply specifications.

3. Optical Performance: The substitute delivers 36lm nominal flux at 25°C and 65mA, compared to 35lm for the main part. This represents a +1lm improvement within the specified tolerance band (35–37lm), with enhanced efficiency at 188 lm/W versus 183 lm/W.

4. Mechanical Compatibility: Both parts share identical 5630 package dimensions (5.00mm × 3.00mm) and 120° viewing angle. The substitute exhibits a lower maximum height (0.80mm vs. 0.90mm), providing improved thermal performance (15°C/W vs. 16°C/W) and enhanced PCB layout flexibility.

5. Compliance Status: The substitute meets ROHS3 compliance, exceeding the RoHS Compliant status of the main part. Both parts maintain identical MSL 2A rating, ECCN EAR99 classification, and HTSUS code 8541.41.0000.

6. Supply Availability: The substitute demonstrates significantly higher inventory (17,892 pcs vs. 1,116 pcs), reducing procurement risk and lead time variability.

Package Lead Configuration Note: The substitute uses flat leads without exposed pad, compared to the main part's flat lead exposed pad configuration. PCB thermal pad design may require adjustment to accommodate this change; verify thermal management requirements for your specific application thermal budget.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAR0S5 be used as a direct drop-in replacement for SPMWHT541MD5WAR0SD?

A: Yes, for electrical and optical functionality. Both parts operate at 2.95V forward voltage and 65mA test current with identical 5000K color temperature and 120° viewing angle. PCB layout modifications may be required due to the package lead configuration difference (flat leads vs. flat lead exposed pad). Verify thermal pad design compatibility with your PCB layout.

Q: What is the significance of the "Not For New Designs" status on the main part?

A: This designation indicates the SPMWHT541MD5WAR0SD is in mature production phase with limited engineering support for new applications. Samsung Semiconductor recommends the LM561B Plus variant (SPMWHT541MP5WAR0S5) for new designs, ensuring access to active technical support, extended product lifecycle, and improved performance characteristics.

Q: Are there electrical differences between the two parts that affect circuit design?

A: No. Both parts share identical forward voltage (2.95V typical) and test current (65mA). The substitute's higher maximum current rating (180mA vs. 150mA) does not require circuit modification; it provides additional operational margin. Current-limiting resistor calculations remain unchanged.

Q: How do the luminous flux specifications compare?

A: The main part specifies 35lm (33–37lm range) at 25°C and 65mA. The substitute specifies 36lm (35–37lm range) at identical conditions. The substitute's tighter tolerance band and +1lm nominal improvement reflect enhanced manufacturing process control in the LM561B Plus variant. Both values fall within acceptable operational range for equivalent lighting performance.

Q: What is the impact of the thermal resistance difference?

A: The substitute exhibits 15°C/W thermal resistance compared to 16°C/W for the main part. This 1°C/W improvement, combined with the lower maximum height (0.80mm vs. 0.90mm), results in enhanced heat dissipation to the PCB. For applications with thermal constraints, the substitute provides improved thermal margin. For standard applications, this difference is not critical.

Q: Does the package lead configuration change affect PCB assembly?

A: The main part uses 4-SMD flat lead with exposed pad; the substitute uses 4-SMD flat leads without exposed pad. Both are compatible with standard SMD reflow soldering processes. PCB thermal pad design should be verified: the main part's exposed pad may have been used for thermal management. Adjust thermal pad dimensions accordingly for the substitute to maintain equivalent thermal performance.

Q: Are both parts RoHS compliant?

A: Yes. The main part is RoHS Compliant; the substitute is ROHS3 Compliant. ROHS3 represents an enhanced compliance standard. Both parts meet environmental and hazardous substance restrictions for EU and global markets.

Q: What is the moisture sensitivity level, and how does it affect storage?

A: Both parts carry MSL 2A rating with 4-week floor life. This indicates the component can be exposed to ambient conditions (23°C ± 2°C, 45–75% RH) for up to 4 weeks after bag opening before baking is required. Store unopened components in dry conditions below 30% relative humidity. Bake at 125°C for 24 hours if floor life is exceeded.

Q: Is the substitute available in higher quantities?

A: Yes. The substitute (SPMWHT541MP5WAR0S5) has 17,892 pcs in stock compared to 1,116 pcs for the main part. This significantly higher availability reduces procurement lead time and supply chain risk for volume production.