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SPMWH1228FD5WAPUS2 Equivalent & Substitute Parts
Part Overview
The SPMWH1228FD5WAPUS2 is a Samsung Semiconductor LM281B cool white LED in 2835 metric package (1113 case) designed for surface mount lighting applications. This component operates at 6500K color temperature with a forward voltage of 3.1V and test current of 150mA, delivering 59 lumens at 25°C with 127 lm/W efficiency.
The SPMWH1228FD5WAPUS2 carries a "Not For New Designs" product status. Identification of equivalent and substitute parts is necessary to support ongoing production requirements and provide design alternatives for new applications where active-status components are preferred.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Color | White, Cool | — |
| CCT (Correlated Color Temperature) | 6500K | K |
| Flux @ 25°C, Current - Test | 59 (57–61) | lm |
| Current - Test | 150 | mA |
| Voltage - Forward (Vf) Typical | 3.1 | V |
| Lumens/Watt @ Current - Test | 127 | lm/W |
| CRI (Color Rendering Index) | 80 | — |
| Current - Max | 160 | mA |
| Viewing Angle | 120 | ° |
| Package / Case | 1113 (2835 Metric) | — |
| Size / Dimension | 0.138" L × 0.110" W (3.50mm × 2.80mm) | — |
| Height - Seated (Max) | 0.030" (0.75mm) | — |
| Thermal Resistance of Package | 25 | °C/W |
| RoHS Status | RoHS Compliant | — |
| Moisture Sensitivity Level (MSL) | 2A (4 Weeks) | — |
Substitute Part Grouping Explanation
Substitution of the SPMWH1228FD5WAPUS2 is determined by the following critical parameters:
Primary Substitution Criteria:
- Color and CCT: White, Cool 6500K
- Package / Case: 1113 (2835 Metric)
- Mounting Type: Surface Mount
- Flux @ 25°C: 59 lm (57–61 lm range)
- Current - Test: 150 mA
- CRI: 80
- Viewing Angle: 120° (±5° tolerance acceptable)
Parametric Equivalents are parts that maintain identical or near-identical electrical and optical performance within specified tolerances. The substitute parts SPMWH3228FD5WAP0SC, SPMWH3228FD5WAPKSC, and SPMWH3228FD5WAPMSC are Samsung LM281BZ+ series components that meet all primary substitution criteria with the exception of forward voltage (3.0V vs. 3.1V), which represents a 0.1V reduction and is within acceptable circuit design margins for constant-current driver applications.
Similar Parts such as the Bridgelux BXEN-65E-21M-3A-00-0-0 meet the same color, CCT, package, and flux specifications but differ in viewing angle (118° vs. 120°) and dimensional characteristics. This part is classified as similar rather than parametric equivalent due to these mechanical variations.
Parameter Comparison
| Parameter | SPMWH1228FD5WAPUS2 (Main) | SPMWH3228FD5WAP0SC | SPMWH3228FD5WAPKSC | SPMWH3228FD5WAPMSC | BXEN-65E-21M-3A-00-0-0 |
|---|---|---|---|---|---|
| Manufacturer | Samsung Semiconductor, Inc. | Samsung Semiconductor, Inc. | Samsung Semiconductor, Inc. | Samsung Semiconductor, Inc. | Bridgelux |
| Series | LM281B | LM281BZ+ | LM281BZ+ | LM281BZ+ | 2835 |
| Product Status | Not For New Designs | Active | Active | Active | Active |
| Color | White, Cool | White, Cool | White, Cool | White, Cool | White, Cool |
| CCT (K) | 6500 | 6500 | 6500 | 6500 | 6500 |
| Flux @ 25°C, Current - Test (lm) | 59 (57–61) | 59 (57–61) | 59 (57–61) | 59 (57–61) | 66 (Typ) |
| Current - Test (mA) | 150 | 150 | 150 | 150 | 150 |
| Voltage - Forward (Vf) Typical (V) | 3.1 | 3.0 | 3.0 | 3.0 | 3.1 |
| Lumens/Watt @ Current - Test (lm/W) | 127 | 131 | 131 | 131 | 142 |
| CRI (Color Rendering Index) | 80 | 80 | 80 | 80 | 80 |
| Current - Max (mA) | 160 | 160 | 160 | 160 | 150 |
| Viewing Angle (°) | 120 | 120 | 120 | 120 | 118 |
| Package / Case | 1113 (2835 Metric) | 1113 (2835 Metric) | 1113 (2835 Metric) | 1113 (2835 Metric) | 1113 (2835 Metric) |
| Size / Dimension | 0.138" L × 0.110" W (3.50mm × 2.80mm) | 0.138" L × 0.110" W (3.50mm × 2.80mm) | 0.138" L × 0.110" W (3.50mm × 2.80mm) | 0.138" L × 0.110" W (3.50mm × 2.80mm) | 0.108" L × 0.134" W (2.74mm × 3.40mm) |
| Height - Seated (Max) | 0.030" (0.75mm) | 0.030" (0.75mm) | 0.030" (0.75mm) | 0.030" (0.75mm) | 0.028" (0.70mm) |
| Thermal Resistance of Package (°C/W) | 25 | 25 | 25 | 25 | — |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 2A (4 Weeks) | 2A (4 Weeks) | 2A (4 Weeks) | 2A (4 Weeks) | 3 (168 Hours) |
| Inventory (Pcs) | 686 | 1114 | 614 | 973 | 1116 |
Engineering Selection Recommendations
Parametric Equivalent Selection (Samsung LM281BZ+ Series):
The three Samsung LM281BZ+ variants—SPMWH3228FD5WAP0SC, SPMWH3228FD5WAPKSC, and SPMWH3228FD5WAPMSC—are direct parametric equivalents for the SPMWH1228FD5WAPUS2. All three parts carry Active product status, ensuring long-term availability and supply chain stability. The forward voltage reduction from 3.1V to 3.0V is within acceptable operating margins for constant-current LED driver circuits and results in improved luminous efficacy (131 lm/W vs. 127 lm/W). All three variants maintain identical optical performance (59 lm @ 25°C), thermal characteristics (25°C/W), and compliance certifications (RoHS Compliant, MSL 2A). Selection among these three variants may be based on packaging availability or supplier logistics, as electrical and optical specifications are identical.
Similar Part Selection (Bridgelux BXEN-65E-21M-3A-00-0-0):
The Bridgelux BXEN-65E-21M-3A-00-0-0 is classified as a similar part due to dimensional and viewing angle variations. This component delivers higher luminous flux (66 lm vs. 59 lm) and superior efficacy (142 lm/W vs. 127 lm/W) at identical test current and forward voltage. The viewing angle is 118° versus 120°, representing a 2° reduction. Dimensional differences (0.108" L × 0.134" W vs. 0.138" L × 0.110" W) and maximum current rating (150 mA vs. 160 mA) require verification against specific PCB layout and thermal management requirements. The Bridgelux part carries ROHS3 Compliant status and MSL 3 (168 Hours), indicating different moisture handling requirements. This part is suitable for applications where higher luminous output and efficiency are prioritized and dimensional constraints permit the alternative footprint.
Frequently Asked Questions (FAQ)
Q: Can the Samsung LM281BZ+ series parts directly replace the SPMWH1228FD5WAPUS2 without circuit modification?
A: Yes. The three Samsung LM281BZ+ variants (SPMWH3228FD5WAP0SC, SPMWH3228FD5WAPKSC, SPMWH3228FD5WAPMSC) are direct parametric equivalents. The 0.1V forward voltage reduction (3.0V vs. 3.1V) is accommodated by constant-current LED driver circuits without modification. All optical, thermal, and compliance parameters are identical or superior.
Q: What is the difference between the three Samsung LM281BZ+ part numbers?
A: SPMWH3228FD5WAP0SC, SPMWH3228FD5WAPKSC, and SPMWH3228FD5WAPMSC are identical in electrical and optical specifications. Differences exist only in packaging or supplier logistics designations (indicated by the suffix characters: 0SC, KSC, MSCSC). Selection may be based on inventory availability or regional supplier assignment.
Q: Can the Bridgelux BXEN-65E-21M-3A-00-0-0 be used as a direct replacement?
A: The Bridgelux part is a similar component, not a parametric equivalent. It maintains color, CCT, and package classification but differs in viewing angle (118° vs. 120°), physical dimensions, and maximum current rating (150 mA vs. 160 mA). PCB layout compatibility and thermal management must be verified before substitution.
Q: What are the key differences in moisture sensitivity between these parts?
A: The Samsung parts (main and all three LM281BZ+ variants) carry MSL 2A (4 Weeks), indicating moisture sensitivity for 4 weeks at 30°C/85% RH. The Bridgelux part carries MSL 3 (168 Hours), indicating moisture sensitivity for 168 hours at 30°C/85% RH. MSL 3 requires more stringent moisture control during storage and handling.
Q: Are all substitute parts RoHS compliant?
A: Yes. The main part SPMWH1228FD5WAPUS2 and all three Samsung LM281BZ+ variants are RoHS Compliant. The Bridgelux BXEN-65E-21M-3A-00-0-0 is ROHS3 Compliant, which represents an updated RoHS standard. Both compliance levels are acceptable for most applications.
Q: Why is the SPMWH1228FD5WAPUS2 marked "Not For New Designs"?
A: This designation indicates the part is in mature or end-of-life phase. Samsung recommends using active-status alternatives for new designs. The three LM281BZ+ variants carry Active status and are recommended for new applications requiring 6500K cool white 2835 LEDs.
Q: What is the significance of the higher lumens/watt rating in the Bridgelux part?
A: The Bridgelux BXEN-65E-21M-3A-00-0-0 delivers 142 lm/W versus 127 lm/W for the main part, representing approximately 12% higher luminous efficacy. This results in higher light output (66 lm vs. 59 lm) at identical test current. Applications requiring maximum efficiency or higher brightness may benefit from this alternative.
Q: Are the physical dimensions compatible with existing PCB designs?
A: The Samsung parts maintain identical dimensions (0.138" L × 0.110" W, 3.50mm × 2.80mm) and height (0.030", 0.75mm) as the main part. The Bridgelux part has different dimensions (0.108" L × 0.134" W, 2.74mm × 3.40mm) and height (0.028", 0.70mm). PCB footprint verification is required before substituting with the Bridgelux component.
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