Equivalent & Substitute Parts for SPMWHT541MP5WAUGS4

Part Overview

The SPMWHT541MP5WAUGS4 is a Samsung Semiconductor LM561B Plus white warm LED (3500K) in 5630 surface mount package with 4-SMD flat leads configuration. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. The device operates at 2.95V forward voltage with 65mA test current and delivers 120° viewing angle with 80 CRI (Color Rendering Index).

Due to its discontinued design status, equivalent and substitute parts must be identified to support ongoing production requirements, maintenance applications, and design transitions. Substitutes are selected based on matching electrical characteristics, mechanical compatibility, and thermal performance within the 5630 package form factor.

Substiute Parts

SPMWHT541MP5WAUGS4

Samsung Semiconductor, Inc.In Stock: 993SPMWHT541MP5WAUGS4 Datasheet

Current PartRFQ

SPMWHT541MP5WAU0S5

Samsung Semiconductor, Inc.In Stock: 3242SPMWHT541MP5WAU0S5 Datasheet

SimilarRFQ

SPMWH1228FD5W2U0SJ

Samsung Semiconductor, Inc.In Stock: 1121SPMWH1228FD5W2U0SJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5W2UKSJ

Samsung Semiconductor, Inc.In Stock: 807SPMWH1228FD5W2UKSJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5W2UMSJ

Samsung Semiconductor, Inc.In Stock: 870SPMWH1228FD5W2UMSJ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for SPMWHT541MP5WAUGS4 is based on the following allowed parameters:

Direct Series Substitutes (LM561B Plus Series): The part SPMWHT541MP5WAU0S5 is a direct substitute within the same LM561B Plus series. This substitute maintains identical electrical specifications (2.95V Vf, 65mA test current, 180mA maximum), identical color temperature (3500K warm white), identical CRI (80), and identical mechanical package (5630, 4-SMD flat leads). The primary difference is improved product status (Active vs. Not For New Designs) and enhanced thermal resistance (15°C/W vs. 20°C/W), representing a performance improvement. This part is fully interchangeable at the circuit level.

Parametric Equivalents (LM281B+ Series): Parts SPMWH1228FD5W2U0SJ, SPMWH1228FD5W2UKSJ, and SPMWH1228FD5W2UMSJ represent parametric equivalents from the LM281B+ series. These parts share the same color temperature (3500K warm white), CRI (80), package form factor (5630, 4-SMD flat leads), and mechanical dimensions. However, they operate at different electrical parameters: 2.9V forward voltage (vs. 2.95V) and 150mA test current (vs. 65mA), with 200mA maximum current rating (vs. 180mA). These parts are suitable for applications where higher current operation is acceptable and forward voltage tolerance permits the 0.05V difference. All three LM281B+ variants are Active products with ROHS3 compliance.

Substitution Constraints: All substitutes maintain the 120° viewing angle, surface mount mounting type, and 5630 package dimensions (5.00mm x 3.00mm x 0.80mm maximum height). Substitution is limited to parts with matching color temperature (3500K) and CRI (80) to ensure optical consistency. Forward voltage and current parameters define the substitution category: direct substitutes operate at identical electrical points, while parametric equivalents operate at different current levels but within acceptable tolerance ranges for warm white LED applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Option): SPMWHT541MP5WAU0S5 is the recommended substitute for SPMWHT541MP5WAUGS4. This part maintains identical electrical operation (2.95V, 65mA test current) and identical optical characteristics (3500K, 80 CRI, 120° viewing angle). The part is Active status, ensuring long-term availability and supply chain stability. It features improved thermal resistance (15°C/W vs. 20°C/W), providing superior heat dissipation performance. ROHS3 compliance exceeds the original RoHS compliance requirement. No circuit modifications are required; this part is a direct pin-compatible and functionally equivalent replacement.

For Higher Current Applications: SPMWH1228FD5W2U0SJ, SPMWH1228FD5W2UKSJ, or SPMWH1228FD5W2UMSJ are suitable when circuit design permits operation at higher current levels (150mA test current, 200mA maximum). These LM281B+ parts maintain identical color temperature (3500K) and CRI (80), ensuring optical consistency. Forward voltage difference (2.9V vs. 2.95V) represents a 0.05V reduction, which is acceptable in most LED driver circuits with adequate voltage headroom. All three variants are Active products with ROHS3 compliance. Selection among these three variants depends on packaging and supplier requirements, as electrical and optical specifications are identical.

Compliance Considerations: All substitute parts exceed the original RoHS compliance with ROHS3 certification. All parts maintain 2A MSL rating (4 Weeks), ensuring identical moisture sensitivity handling and storage requirements. ECCN and HTSUS classifications remain consistent across all parts, supporting regulatory and customs documentation continuity.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAU0S5 be used as a direct replacement for SPMWHT541MP5WAUGS4 without circuit modification?

A: Yes. SPMWHT541MP5WAU0S5 is a direct substitute with identical forward voltage (2.95V), test current (65mA), maximum current (180mA), color temperature (3500K), CRI (80), and package configuration (5630, 4-SMD flat leads). No circuit modifications are required. The part is pin-compatible and functionally equivalent.

Q: What is the difference between the LM561B Plus and LM281B+ series substitutes?

A: The LM561B Plus series (SPMWHT541MP5WAU0S5) operates at 65mA test current with 180mA maximum rating. The LM281B+ series (SPMWH1228FD5W2U0SJ, SPMWH1228FD5W2UKSJ, SPMWH1228FD5W2UMSJ) operates at 150mA test current with 200mA maximum rating. Both series share identical color temperature (3500K), CRI (80), viewing angle (120°), and package dimensions. The LM281B+ variants are suitable for applications requiring higher current operation.

Q: Are there forward voltage differences between the main part and substitutes?

A: SPMWHT541MP5WAU0S5 maintains identical forward voltage (2.95V). The LM281B+ series parts operate at 2.9V, representing a 0.05V reduction. This difference is acceptable in LED driver circuits with adequate voltage headroom. Verify that your circuit design accommodates this voltage tolerance.

Q: Do all substitute parts have the same package dimensions?

A: Yes. All substitute parts use the 5630 package with 4-SMD flat leads configuration. Physical dimensions are 5.00mm x 3.00mm with maximum seated height of 0.80mm. All parts are mechanically compatible with existing PCB footprints designed for SPMWHT541MP5WAUGS4.

Q: What is the thermal resistance difference, and does it affect circuit design?

A: SPMWHT541MP5WAU0S5 has improved thermal resistance (15°C/W vs. 20°C/W), providing better heat dissipation. The LM281B+ variants have thermal resistance of 25°C/W. Lower thermal resistance values indicate superior heat management. If thermal performance is critical, SPMWHT541MP5WAU0S5 is the preferred choice. Verify thermal calculations for your specific application.

Q: Are all substitute parts RoHS compliant?

A: Yes. SPMWHT541MP5WAU0S5 and all LM281B+ variants are ROHS3 compliant, exceeding the original RoHS compliance requirement of SPMWHT541MP5WAUGS4. All parts meet current regulatory standards for hazardous substance restrictions.

Q: What is the product status difference, and why does it matter?

A: SPMWHT541MP5WAUGS4 is classified as "Not For New Designs," indicating end-of-life status with limited future availability. All substitute parts are Active status, ensuring long-term supply chain stability and continued manufacturing support. For new designs and ongoing production, Active status parts are recommended.

Q: Can I use the LM281B+ parts if my circuit is designed for 65mA operation?

A: The LM281B+ parts can operate at lower currents, including 65mA, but they are rated for 150mA test current and 200mA maximum. If your circuit is designed for 65mA operation, SPMWHT541MP5WAU0S5 (LM561B Plus) is the more appropriate choice, as it matches the original design point exactly.

Q: Are there any differences in moisture sensitivity or storage requirements?

A: All parts maintain identical MSL rating of 2A (4 Weeks). Storage and handling requirements are identical. No changes to moisture control procedures or storage conditions are necessary when substituting parts.