SPMWHT541MP5WAPGS4 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP5WAPGS4 is a Samsung Semiconductor LM561B Plus white LED in 5630 surface mount package, specified for cool white 6500K color temperature operation. 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 2.95V forward voltage at 65mA test current with 120° viewing angle and 80 CRI (Color Rendering Index). Due to its discontinued design status, equivalent and substitute parts are necessary for ongoing production requirements, maintenance applications, and design continuity.

Substiute Parts

SPMWHT541MP5WAPGS4

Samsung Semiconductor, Inc.In Stock: 767SPMWHT541MP5WAPGS4 Datasheet

Current PartRFQ

SPMWHT541MP5WAPKS4

Samsung Semiconductor, Inc.In Stock: 48537SPMWHT541MP5WAPKS4 Datasheet

SimilarRFQ

SPMWH1228FD5W2P0SJ

Samsung Semiconductor, Inc.In Stock: 1009SPMWH1228FD5W2P0SJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5W2PKSJ

Samsung Semiconductor, Inc.In Stock: 1026SPMWH1228FD5W2PKSJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5W2PMSJ

Samsung Semiconductor, Inc.In Stock: 1131SPMWH1228FD5W2PMSJ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPMWHT541MP5WAPGS4 are classified into two categories based on electrical and mechanical compatibility:

Direct Substitute (Same Series): The SPMWHT541MP5WAPKS4 is a direct substitute within the LM561B Plus series. This part maintains identical electrical specifications (2.95V forward voltage, 65mA test current, 180mA maximum current) and mechanical form factor (5630 package, 4-SMD flat leads, 120° viewing angle). The primary distinction is product status: SPMWHT541MP5WAPKS4 is Active, whereas the original part is Not For New Designs. This substitute provides continuity with improved thermal performance (15°C/W versus 20°C/W) and documented luminous flux output (33lm at 65mA, 167 lm/W).

Parametric Equivalents (Different Series): The SPMWH1228FD5W2P0SJ, SPMWH1228FD5W2PKSJ, and SPMWH1228FD5W2PMSJ are parametric equivalents from the LM281B+ series. These parts share identical color temperature (6500K), viewing angle (120°), CRI (80), package form factor (5630, 4-SMD flat leads), and physical dimensions. Electrical differences include forward voltage (2.9V versus 2.95V) and test current (150mA versus 65mA). All three LM281B+ variants are Active products with ROHS3 compliance and REACH Unaffected status.

Substitution logic is based on the following allowed parameters: color temperature (6500K), color rendering index (80), viewing angle (120°), package type (5630 4-SMD flat leads), physical dimensions (5.00mm x 3.00mm), mounting type (surface mount), and compliance certifications (RoHS, REACH).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Series Continuity): The SPMWHT541MP5WAPKS4 is the primary substitute for the SPMWHT541MP5WAPGS4. Both parts belong to the LM561B Plus series and maintain identical electrical and mechanical specifications. The SPMWHT541MP5WAPKS4 offers Active product status, ensuring ongoing manufacturer support and supply chain availability. This part features improved thermal resistance (15°C/W versus 20°C/W) and documented luminous flux performance (33lm at 65mA test current). ROHS3 compliance provides enhanced regulatory alignment compared to the original RoHS Compliant designation. Selection of this direct substitute preserves circuit design parameters and PCB layout compatibility without modification.

For Parametric Equivalence (Series Migration): The SPMWH1228FD5W2P0SJ, SPMWH1228FD5W2PKSJ, and SPMWH1228FD5W2PMSJ are parametric equivalents from the LM281B+ series. These parts are suitable when circuit design allows for electrical parameter variation. All three variants are Active products with ROHS3 compliance and REACH Unaffected status, providing superior regulatory compliance and supply chain stability. The LM281B+ series operates at 2.9V forward voltage (0.05V lower than LM561B Plus) and 150mA test current (2.3x higher than LM561B Plus). These parts require circuit evaluation to confirm compatibility with existing current-limiting resistor values and power supply specifications. Thermal resistance is higher (25°C/W versus 20°C/W), necessitating thermal design review for applications with stringent thermal constraints.

Inventory and Availability Considerations: The SPMWHT541MP5WAPKS4 direct substitute has significantly higher inventory availability (48,482 pcs) compared to the original part (700 pcs). The LM281B+ parametric equivalents maintain active inventory levels (952–1,039 pcs), supporting sustained production requirements. All substitute parts are supplied in Tape & Reel packaging with identical MSL classification (2A, 4 Weeks) or equivalent handling requirements.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAPKS4 be used as a direct drop-in replacement for SPMWHT541MP5WAPGS4?

A: Yes. The SPMWHT541MP5WAPKS4 is a direct substitute within the LM561B Plus series. Both parts share identical forward voltage (2.95V), test current (65mA), maximum current (180mA), viewing angle (120°), CRI (80), and physical dimensions (5.00mm x 3.00mm). No circuit modifications or PCB layout changes are required. The primary difference is product status: SPMWHT541MP5WAPKS4 is Active, whereas the original is Not For New Designs.

Q: What are the electrical differences between LM561B Plus and LM281B+ series?

A: The LM281B+ series (SPMWH1228FD5W2P0SJ, SPMWH1228FD5W2PKSJ, SPMWH1228FD5W2PMSJ) operates at 2.9V forward voltage compared to 2.95V for LM561B Plus. The test current is 150mA for LM281B+ versus 65mA for LM561B Plus. Maximum current rating is 200mA for LM281B+ versus 180mA for LM561B Plus. These differences require circuit evaluation, particularly for current-limiting resistor sizing and power supply capability.

Q: Are the three LM281B+ variants (SPMWH1228FD5W2P0SJ, SPMWH1228FD5W2PKSJ, SPMWH1228FD5W2PMSJ) electrically identical?

A: Yes. All three LM281B+ variants are electrically and mechanically identical. They differ only in internal manufacturing or packaging tape configuration, indicated by the suffix designations (P0SJ, PKSJ, PMSJ). Selection among these three parts is based on supplier availability and inventory levels.

Q: What is the impact of thermal resistance differences on component selection?

A: The SPMWHT541MP5WAPKS4 has thermal resistance of 15°C/W, compared to 20°C/W for the original SPMWHT541MP5WAPGS4. The LM281B+ variants have thermal resistance of 25°C/W. Lower thermal resistance indicates better heat dissipation. For applications with thermal constraints or high ambient temperatures, the SPMWHT541MP5WAPKS4 direct substitute provides superior thermal performance. The LM281B+ variants require thermal design verification to ensure junction temperature remains within specified limits.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SPMWHT541MP5WAPKS4 is ROHS3 Compliant. The LM281B+ variants (SPMWH1228FD5W2P0SJ, SPMWH1228FD5W2PKSJ, SPMWH1228FD5W2PMSJ) are ROHS3 Compliant and REACH Unaffected. All parts meet current regulatory requirements for hazardous substance restrictions.

Q: What is the moisture sensitivity level (MSL) for substitute parts?

A: The SPMWHT541MP5WAPKS4 maintains the same MSL classification as the original part: 2A (4 Weeks). This indicates the component can be exposed to moisture for up to 4 weeks at specified humidity levels before soldering. Proper storage in dry conditions and adherence to IPC-A-610 handling procedures is required. MSL data for LM281B+ variants was not provided in the specification.

Q: Can the LM281B+ series be used in existing PCB designs without layout modifications?

A: Yes, regarding physical form factor. All substitute parts use the identical 5630 package with 4-SMD flat leads and 5.00mm x 3.00mm dimensions. PCB footprints and assembly processes remain unchanged. However, circuit design evaluation is required due to electrical parameter differences (forward voltage and test current). Current-limiting resistor values may require adjustment to accommodate the 150mA test current of LM281B+ versus 65mA for LM561B Plus.

Q: What is the luminous flux output of substitute parts?

A: The SPMWHT541MP5WAPKS4 direct substitute provides 33lm (32–34lm range) at 65mA test current, corresponding to 167 lm/W efficiency. Luminous flux data was not provided for the LM281B+ parametric equivalents in the specification.

Q: Are all parts supplied in Tape & Reel packaging?

A: Yes. All substitute parts are supplied in Tape & Reel (TR) packaging, consistent with the original SPMWHT541MP5WAPGS4. This packaging format is suitable for automated pick-and-place assembly processes.