Equivalent & Substitute Parts for SPMWHT541MP5WAUGS5

Part Overview

The SPMWHT541MP5WAUGS5 is a Samsung Semiconductor LM561B Plus white warm LED (3500K) in 5630 surface mount package with 4-SMD flat leads configuration. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part delivers 65mA test current at 2.95V forward voltage with 120° viewing angle and 80 CRI rating.

Due to its discontinued design status, equivalent and substitute parts are necessary for ongoing production support, maintenance applications, and design transitions. Suitable alternatives maintain the same color temperature, package form factor, and optical characteristics while offering active product status and improved thermal performance.

Substiute Parts

SPMWHT541MP5WAUGS5

Samsung Semiconductor, Inc.In Stock: 772SPMWHT541MP5WAUGS5 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 SPMWHT541MP5WAUGS5 is based on the following critical parameters that must remain constant or compatible:

Primary Compatibility Criteria:

• Color temperature: 3500K warm white (mandatory match)
• Package form factor: 5630 4-SMD flat leads (mandatory match)
• Mounting type: Surface mount (mandatory match)
• Physical dimensions: 5.00mm x 3.00mm (mandatory match)
• CRI: 80 (mandatory match)
• Viewing angle: 120° (mandatory match)

Electrical Operating Parameters:

• Forward voltage (Vf): 2.95V nominal (acceptable range: 2.9V to 3.0V)
• Test current: 65mA to 150mA (within maximum rating of 180mA to 200mA)
• Maximum current rating: 180mA to 200mA

Compliance & Status:

• RoHS3 compliance preferred for new applications
• Active product status preferred over discontinued designs

Substitutes are grouped into two categories: direct series replacements (LM561B Plus variants) and parametric equivalents (LM281B+ series with compatible electrical and optical characteristics).

Parameter Comparison

Engineering Selection Recommendations

For Direct Series Replacement (Preferred for Existing Designs):

SPMWHT541MP5WAU0S5 is the primary substitute for SPMWHT541MP5WAUGS5. Both components belong to the LM561B Plus series and maintain identical electrical and optical specifications. The substitute offers improved thermal resistance (15°C/W versus 20°C/W), enhanced heat dissipation capability, and active product status with ROHS3 compliance. This part is suitable for direct PCB substitution without circuit modification. Inventory availability is significantly higher (3192 units versus 681 units).

For Parametric Equivalent Selection (Cross-Series Substitution):

The LM281B+ series parts (SPMWH1228FD5W2U0SJ, SPMWH1228FD5W2UKSJ, SPMWH1228FD5W2UMSJ) provide parametric equivalence with the following considerations:

• Forward voltage is slightly lower (2.9V versus 2.95V), requiring circuit current-limiting adjustment
• Test current is higher (150mA versus 65mA), necessitating driver circuit redesign
• Maximum current rating is higher (200mA versus 180mA), providing additional operational margin
• Thermal resistance is higher (25°C/W versus 20°C/W), requiring thermal management evaluation
• All three LM281B+ variants maintain identical electrical and optical characteristics; selection among them depends on packaging tape configuration and supplier logistics

Compliance Considerations:

All substitute parts meet ROHS3 compliance and REACH unaffected status, suitable for applications with environmental regulatory requirements. Moisture sensitivity level remains constant at 2A (4 Weeks) across all parts, maintaining identical handling and storage protocols.

Thermal Management:

SPMWHT541MP5WAU0S5 offers superior thermal performance (15°C/W) compared to the main part (20°C/W) and LM281B+ equivalents (25°C/W). For applications with thermal constraints, the direct substitute is preferred. For applications with relaxed thermal requirements, LM281B+ parts are acceptable.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAU0S5 be used as a direct replacement for SPMWHT541MP5WAUGS5 without circuit modification?

A: Yes. SPMWHT541MP5WAU0S5 maintains identical forward voltage (2.95V), test current (65mA), and maximum current rating (180mA). No circuit redesign is required. The substitute can be soldered directly onto existing PCBs designed for the main part.

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

A: The primary differences are test current (65mA for LM561B Plus versus 150mA for LM281B+) and thermal resistance (20°C/W for LM561B Plus versus 25°C/W for LM281B+). Forward voltage is slightly lower for LM281B+ (2.9V versus 2.95V). Both series maintain identical color temperature (3500K), CRI (80), viewing angle (120°), and package form factor (5630 4-SMD).

Q: Are the three LM281B+ variants (SPMWH1228FD5W2U0SJ, SPMWH1228FD5W2UKSJ, SPMWH1228FD5W2UMSJ) electrically identical?

A: Yes. All three LM281B+ variants have identical electrical and optical specifications. The part number suffix differences (U0SJ, UKSJ, UMSJ) indicate different tape packaging configurations or supplier designations. Selection should be based on tape reel compatibility with assembly equipment and supplier availability.

Q: What is the impact of using LM281B+ parts with higher test current (150mA) in a circuit designed for 65mA operation?

A: Direct substitution without circuit modification will result in higher current draw and increased luminous output. The circuit's current-limiting resistor or driver must be adjusted to maintain the desired 65mA operating point. Failure to adjust the circuit will cause excessive current flow up to the maximum rating (200mA), reducing component lifespan and increasing thermal stress.

Q: Do all substitute parts have the same moisture sensitivity requirements?

A: Yes. All parts listed (main and substitutes) have MSL 2A (4 Weeks) rating. Identical moisture handling, storage, and reflow protocols apply across all components. No changes to assembly procedures are required.

Q: Which substitute offers the best thermal performance?

A: SPMWHT541MP5WAU0S5 offers the best thermal performance with 15°C/W thermal resistance, compared to 20°C/W for the main part and 25°C/W for LM281B+ equivalents. This makes it the preferred choice for applications with elevated ambient temperatures or high-density PCB layouts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SPMWHT541MP5WAU0S5 and all three LM281B+ variants are ROHS3 compliant. The main part (SPMWHT541MP5WAUGS5) is RoHS compliant but not explicitly ROHS3 certified. For applications requiring ROHS3 compliance, use substitute parts.

Q: Can the 5630 package dimensions vary between different manufacturers?

A: No. All parts listed maintain identical 5630 package dimensions (5.00mm x 3.00mm) and maximum seated height (0.80mm). Physical compatibility with existing PCB footprints is guaranteed across all substitutes.