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SPMWHT541MD5WAUMS2 LED Equivalent & Substitute Parts
Part Overview
The SPMWHT541MD5WAUMS2 is a Samsung Semiconductor LM561B series warm white LED (3500K) designed for surface mount applications in 5630 package format. This component delivers 28 lumens at 65mA with a forward voltage of 2.95V and 120° viewing angle. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and design continuity. Substitute parts maintain core electrical and mechanical compatibility while offering improved performance characteristics or active product status.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Series | LM561B | — |
| Color / CCT | White, Warm / 3500K | — |
| Flux @ 25°C, 65mA | 28 lm (27–29 lm) | lumens |
| Forward Voltage (Typ) | 2.95V | V |
| Test Current | 65mA | mA |
| Maximum Current | 150mA | mA |
| Lumens/Watt @ 65mA | 146 lm/W | — |
| CRI | 80 | — |
| Viewing Angle | 120° | — |
| Package / Case | 4-SMD, Flat Lead Exposed Pad | — |
| Supplier Device Package | 5630 | — |
| Dimensions | 5.00mm L × 3.00mm W | mm |
| Height (Max) | 0.90mm | mm |
| Thermal Resistance | 16°C/W | — |
| RoHS Status | RoHS Compliant | — |
| MSL | 2A (4 Weeks) | — |
Substitute Part Grouping Explanation
Substitution eligibility for the SPMWHT541MD5WAUMS2 is determined by the following critical parameters:
Electrical Compatibility Requirements:
- Forward voltage (Vf) must be 2.95V (typical)
- Test current must be 65mA
- Maximum current rating must support 65mA operation
- Color temperature must be warm white (3000K–3500K range)
- CRI must be 80 or higher
Mechanical Compatibility Requirements:
- Package type: 4-SMD surface mount
- Supplier device package: 5630
- Dimensions: 5.00mm L × 3.00mm W
- Height must not exceed 0.90mm (seated maximum)
- Mounting type: Surface mount
Compliance Requirements:
- RoHS compliance (RoHS or ROHS3)
- MSL rating: 2A or better
- ECCN: EAR99
Substitute parts identified below meet all electrical and mechanical parameters. Differences in product status (active vs. obsolete), packaging format (tape & reel vs. cut tape), and luminous flux performance are noted but do not disqualify substitution eligibility.
Parameter Comparison
| Parameter | SPMWHT541MD5WAUMS2 (Main) | SPMWHT541MD5WAVMS2 (Substitute) | SPMWHT541MP5WAUMS4 (Substitute) |
|---|---|---|---|
| Manufacturer | Samsung Semiconductor, Inc. | Samsung Semiconductor, Inc. | Samsung Semiconductor, Inc. |
| Series | LM561B | LM561B | LM561B Plus |
| Product Status | Obsolete | Obsolete | Active |
| Color / CCT | White, Warm / 3500K | White, Warm / 3000K | White, Warm / 3500K |
| Flux @ 25°C, 65mA | 28 lm (27–29 lm) | 28 lm (27–29 lm) | 32 lm (31–33 lm) |
| Forward Voltage (Typ) | 2.95V | 2.95V | 2.95V |
| Test Current | 65mA | 65mA | 65mA |
| Maximum Current | 150mA | 150mA | 180mA |
| Lumens/Watt @ 65mA | 146 lm/W | 146 lm/W | 167 lm/W |
| CRI | 80 | 80 | 80 |
| Viewing Angle | 120° | 120° | 120° |
| Package / Case | 4-SMD, Flat Lead Exposed Pad | 4-SMD, Flat Lead Exposed Pad | 4-SMD, Flat Leads |
| Supplier Device Package | 5630 | 5630 | 5630 |
| Dimensions | 5.00mm L × 3.00mm W | 5.00mm L × 3.00mm W | 5.00mm L × 3.00mm W |
| Height (Max) | 0.90mm | 0.90mm | 0.80mm |
| Thermal Resistance | 16°C/W | 16°C/W | 16°C/W |
| RoHS Status | RoHS Compliant | RoHS Compliant | ROHS3 Compliant |
| MSL | 2A (4 Weeks) | 2A (4 Weeks) | 2A (4 Weeks) |
| Packaging Format | — | Cut Tape (CT) & Digi-Reel® | Tape & Reel (TR) |
| Inventory Status | 1044 Pcs | 3015 Pcs | 200400 Pcs |
Engineering Selection Recommendations
SPMWHT541MD5WAVMS2 (Parametric Equivalent): This part is a parametric equivalent with identical electrical performance (28 lm, 146 lm/W, 2.95V, 65mA) and mechanical compatibility. The primary difference is color temperature (3000K vs. 3500K). Both parts are obsolete with RoHS compliance. Selection of this substitute is appropriate when 3000K warm white color temperature is acceptable for the application. Inventory availability is higher (3015 Pcs) than the main part.
SPMWHT541MP5WAUMS4 (Performance-Enhanced Substitute): This part maintains identical electrical operating parameters (2.95V, 65mA, 120° viewing angle) and mechanical form factor (5630, 5.00mm × 3.00mm). Key differences include active product status, higher luminous flux (32 lm vs. 28 lm), improved efficiency (167 lm/W vs. 146 lm/W), higher maximum current rating (180mA vs. 150mA), and ROHS3 compliance. Height is reduced to 0.80mm. This substitute is recommended for new designs and production continuity due to active status and superior performance metrics. Inventory availability is significantly higher (200400 Pcs).
Compliance Considerations: All three parts meet RoHS requirements. SPMWHT541MP5WAUMS4 carries ROHS3 compliance, providing enhanced regulatory alignment for future applications. MSL rating is consistent across all parts (2A, 4 Weeks).
Frequently Asked Questions (FAQ)
Q: Can SPMWHT541MD5WAVMS2 be used as a direct replacement for SPMWHT541MD5WAUMS2?
A: SPMWHT541MD5WAVMS2 is electrically and mechanically compatible. Both operate at 2.95V, 65mA with identical luminous flux (28 lm) and efficiency (146 lm/W). The difference is color temperature: 3000K (substitute) vs. 3500K (main part). Substitution is valid if 3000K warm white is acceptable for the application. Both parts are obsolete.
Q: Is SPMWHT541MP5WAUMS4 a suitable replacement for production use?
A: Yes. SPMWHT541MP5WAUMS4 maintains full electrical and mechanical compatibility at the 65mA operating point (2.95V, 120° viewing angle, 5630 package). It is an active product with higher performance (32 lm, 167 lm/W) and ROHS3 compliance. The reduced height (0.80mm vs. 0.90mm) is compatible with standard 5630 PCB layouts. This part is recommended for new production and design continuity.
Q: What is the difference between "Flat Lead Exposed Pad" and "Flat Leads" package types?
A: Both are 4-SMD surface mount packages in 5630 form factor with identical dimensions (5.00mm × 3.00mm). "Flat Lead Exposed Pad" (SPMWHT541MD5WAUMS2, SPMWHT541MD5WAVMS2) includes an exposed thermal pad for enhanced heat dissipation. "Flat Leads" (SPMWHT541MP5WAUMS4) does not include this feature. Both are mechanically compatible with standard 5630 PCB footprints. Thermal resistance is identical (16°C/W) across all parts.
Q: Can I use SPMWHT541MP5WAUMS4 at currents higher than 65mA?
A: SPMWHT541MP5WAUMS4 has a maximum current rating of 180mA, compared to 150mA for the main part. However, operation above 65mA will increase luminous flux and heat generation. The provided specifications (28–32 lm, 146–167 lm/W) are measured at 65mA test current. Operation at higher currents requires thermal analysis and is outside the scope of this equivalency reference.
Q: Are there packaging format differences that affect PCB assembly?
A: Yes. SPMWHT541MD5WAUMS2 uses standard packaging (format not specified). SPMWHT541MD5WAVMS2 is supplied in Cut Tape (CT) & Digi-Reel® format. SPMWHT541MP5WAUMS4 is supplied in Tape & Reel (TR) format. All three are surface mount compatible with identical footprints. Packaging format affects supply chain logistics and pick-and-place automation but does not impact electrical or mechanical compatibility.
Q: What is the significance of "Active" vs. "Obsolete" product status?
A: Product status indicates manufacturer support and availability. Obsolete parts (SPMWHT541MD5WAUMS2, SPMWHT541MD5WAVMS2) are no longer in active production; existing inventory is available but future supply is not guaranteed. Active parts (SPMWHT541MP5WAUMS4) are in current production with guaranteed long-term availability. For new designs and production continuity, active parts are preferred.
Q: Do all three parts meet current environmental and trade compliance requirements?
A: All three parts are RoHS compliant and carry EAR99 ECCN classification. SPMWHT541MP5WAUMS4 carries ROHS3 compliance, providing enhanced regulatory alignment. All parts are REACH unaffected or compliant. MSL rating is 2A (4 Weeks) across all parts, indicating identical moisture sensitivity handling requirements.
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