Equivalent & Substitute Parts for SPMWHT541MP5WARGS4

Part Overview

The SPMWHT541MP5WARGS4 is a Samsung Semiconductor LM561B Plus white LED in 5630 package format, rated for cool white 5000K color temperature. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part is supplied in Tape & Reel packaging with 955 units currently in stock inventory.

Due to its discontinued design status, equivalent substitute parts are necessary for ongoing production requirements, maintenance applications, and design updates. Samsung provides direct substitutes within the LM561B Plus series and parametric equivalents from the LM281B+ series that maintain functional compatibility for cool white LED applications.

Substiute Parts

SPMWHT541MP5WARGS4

Samsung Semiconductor, Inc.In Stock: 1015SPMWHT541MP5WARGS4 Datasheet

Current PartRFQ

SPMWHT541MP5WARKS4

Samsung Semiconductor, Inc.In Stock: 73422SPMWHT541MP5WARKS4 Datasheet

SimilarRFQ

SPMWH1228FD5W2R0SJ

Samsung Semiconductor, Inc.In Stock: 1071SPMWH1228FD5W2R0SJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5W2RKSJ

Samsung Semiconductor, Inc.In Stock: 1062SPMWH1228FD5W2RKSJ Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5W2RMSJ

Samsung Semiconductor, Inc.In Stock: 1148SPMWH1228FD5W2RMSJ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for SPMWHT541MP5WARGS4 is organized into two categories based on electrical and mechanical compatibility:

Direct Packaging Substitute (Same Series, Different Packaging): SPMWHT541MP5WARKS4 is a direct equivalent within the LM561B Plus series. It maintains identical electrical specifications (2.95V Vf, 65mA test current, 180mA maximum, 120° viewing angle, 5000K CCT, 80 CRI) and physical dimensions (5630 package, 5.00 × 3.00 × 0.80 mm). The primary difference is packaging format: Cut Tape (CT) versus Tape & Reel (TR). This part is Active status with improved thermal resistance (15°C/W versus 20°C/W) and documented luminous flux output (34 lm at 65mA, 177 lm/W efficiency).

Parametric Equivalents (Different Series, Compatible Parameters): SPMWH1228FD5W2R0SJ, SPMWH1228FD5W2RKSJ, and SPMWH1228FD5W2RMSJ are LM281B+ series parts that provide parametric equivalence. These parts share the same color temperature (5000K), CRI (80), viewing angle (120°), package format (4-SMD, Flat Leads, 5630), and physical dimensions (5.00 × 3.00 × 0.80 mm). All three are Active status with ROHS3 compliance. The key electrical difference is higher test current (150mA versus 65mA) and slightly lower forward voltage (2.9V versus 2.95V), with maximum current rated at 200mA versus 180mA.

Substitution logic is based strictly on: color temperature matching (5000K), CRI equivalence (80), package compatibility (5630 4-SMD), physical dimensions, viewing angle (120°), and surface mount mounting type.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance): SPMWHT541MP5WARKS4 is the primary substitute when maintaining identical electrical specifications is required. This part is Active status with ROHS3 compliance, providing superior long-term availability compared to the discontinued SPMWHT541MP5WARGS4. The Cut Tape packaging format is suitable for automated pick-and-place assembly. The improved thermal resistance (15°C/W) provides better thermal performance in high-density applications. Documented luminous flux output (34 lm at 65mA test current) enables precise optical design calculations.

For Parametric Equivalence (Higher Current Operation): SPMWH1228FD5W2R0SJ, SPMWH1228FD5W2RKSJ, and SPMWH1228FD5W2RMSJ are suitable when higher current operation is acceptable within circuit design constraints. All three LM281B+ variants are Active status with ROHS3 compliance and REACH Unaffected designation. These parts operate at 150mA test current versus 65mA for the LM561B Plus series, with maximum current rated at 200mA. Forward voltage is slightly lower (2.9V versus 2.95V), requiring minor circuit adjustments in constant-current driver designs. Thermal resistance is higher (25°C/W), necessitating thermal management evaluation in high-power applications. The three LM281B+ part numbers are functionally identical; selection among them is based on packaging reel configuration and inventory availability.

Compliance Considerations: All substitute parts maintain RoHS3 compliance and EAR99 export classification. Moisture sensitivity level remains 2A (4 Weeks) across all options, requiring identical storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WARKS4 be used as a direct drop-in replacement for SPMWHT541MP5WARGS4?

A: Yes. SPMWHT541MP5WARKS4 maintains identical electrical specifications (2.95V Vf, 65mA test current, 180mA maximum) and physical dimensions (5630 package, 5.00 × 3.00 × 0.80 mm). The only difference is packaging format: Cut Tape versus Tape & Reel. Both are surface-mount compatible with identical PCB footprints. The improved thermal resistance (15°C/W) provides additional thermal margin.

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

A: The LM281B+ series operates at higher test current (150mA versus 65mA) and maximum current (200mA versus 180mA). Forward voltage is slightly lower (2.9V versus 2.95V). Thermal resistance is higher (25°C/W versus 20°C/W for the main part). Color temperature, CRI, viewing angle, and physical dimensions are identical. Circuit designs must accommodate the higher current rating and lower forward voltage.

Q: Are the three LM281B+ part numbers (SPMWH1228FD5W2R0SJ, SPMWH1228FD5W2RKSJ, SPMWH1228FD5W2RMSJ) electrically identical?

A: Yes. All three LM281B+ variants have identical electrical specifications and physical dimensions. Differences relate to reel configuration and packaging logistics. Selection is based on inventory availability and assembly equipment compatibility.

Q: What packaging format should be selected for automated assembly?

A: SPMWHT541MP5WARKS4 is supplied in Cut Tape (CT) format, suitable for automated pick-and-place systems with tape-feeding capability. SPMWH1228FD5W2R0SJ, SPMWH1228FD5W2RKSJ, and SPMWH1228FD5W2RMSJ are supplied in Tape & Reel (TR) format, standard for high-volume automated assembly. Equipment compatibility determines the appropriate selection.

Q: Does the lower forward voltage of LM281B+ parts (2.9V versus 2.95V) require circuit modifications?

A: Circuit designs using constant-current LED drivers are not affected by the 0.05V difference. Designs using series resistors or voltage-regulated supplies may require minor resistor value adjustments to maintain target current. Thermal design must account for the higher thermal resistance (25°C/W) of LM281B+ parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SPMWHT541MP5WARKS4 and all three LM281B+ variants are ROHS3 compliant. The original SPMWHT541MP5WARGS4 is RoHS Compliant (earlier standard). All parts meet current regulatory requirements.

Q: What is the inventory status for each substitute?

A: SPMWHT541MP5WARKS4 has 73,313 units in stock. SPMWH1228FD5W2R0SJ has 1,035 units. SPMWH1228FD5W2RKSJ has 987 units. SPMWH1228FD5W2RMSJ has 1,046 units. The original SPMWHT541MP5WARGS4 has 955 units. SPMWHT541MP5WARKS4 provides the highest inventory availability.