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MLCSWT-A1-0000-000X51 Equivalent & Substitute Parts
Part Overview
The MLCSWT-A1-0000-000X51 is an XLamp® ML-C series LED from CreeLED, Inc., designed for cool white lighting applications at 6500K color temperature. This surface mount device delivers 29 lumens at 50mA test current with a forward voltage of 6.4V and a 120° viewing angle. The part is currently active in production with 897 units in stock. Substitute parts are identified to address inventory availability, supply chain continuity, or procurement preferences while maintaining identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MLCSWT-A1-0000-000X51 |
| Manufacturer | CreeLED, Inc. |
| Series | XLamp® ML-C |
| Color / CCT | White, Cool / 6500K |
| Flux @ 25°C, 50mA | 29lm (27lm – 31lm) |
| Forward Voltage (Vf) | 6.4V (Typ) |
| Test Current | 50mA |
| Maximum Current | 175mA |
| Lumens/Watt @ 50mA | 91 lm/W |
| CRI (Color Rendering Index) | 75 (Typ) |
| Viewing Angle | 120° |
| Package / Case | 4-SMD, J-Lead Exposed Pad |
| Size / Dimension | 0.138" L × 0.124" W (4.60mm × 3.15mm) |
| Height - Seated (Max) | 0.052" (1.33mm) |
| Thermal Resistance | 13°C/W |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| MSL Rating | 2A (4 Weeks) |
| Product Status | Active |
Substitute Part Grouping Explanation
The MLCSWT-A1-0000-000X51 has one identified parametric equivalent: MLCSWT-A1-0000-000XE1. Substitution is based on strict electrical and mechanical parameter matching within the XLamp® ML-C series. The substitute part maintains identical specifications across all critical parameters: color temperature (6500K), luminous flux (29lm at 50mA), forward voltage (6.4V), maximum current rating (175mA), viewing angle (120°), package configuration (4-SMD, J-Lead Exposed Pad), physical dimensions (4.60mm × 3.15mm), and thermal characteristics (13°C/W). Both parts are manufactured by CreeLED, Inc., carry active product status, and meet the same compliance requirements (RoHS Compliant, MSL 2A). The substitute differs only in packaging lot designation, making it functionally and mechanically interchangeable in all circuit applications.
Parameter Comparison
| Parameter | MLCSWT-A1-0000-000X51 | MLCSWT-A1-0000-000XE1 | Match |
|---|---|---|---|
| Manufacturer | CreeLED, Inc. | CreeLED, Inc. | ✓ |
| Series | XLamp® ML-C | XLamp® ML-C | ✓ |
| Color / CCT | White, Cool / 6500K | White, Cool / 6500K | ✓ |
| Flux @ 25°C, 50mA | 29lm (27lm – 31lm) | 29lm (27lm – 31lm) | ✓ |
| Forward Voltage (Vf) | 6.4V (Typ) | 6.4V (Typ) | ✓ |
| Test Current | 50mA | 50mA | ✓ |
| Maximum Current | 175mA | 175mA | ✓ |
| Lumens/Watt @ 50mA | 91 lm/W | 91 lm/W | ✓ |
| CRI (Color Rendering Index) | 75 (Typ) | 75 (Typ) | ✓ |
| Viewing Angle | 120° | 120° | ✓ |
| Package / Case | 4-SMD, J-Lead Exposed Pad | 4-SMD, J-Lead Exposed Pad | ✓ |
| Size / Dimension | 4.60mm × 3.15mm | 4.60mm × 3.15mm | ✓ |
| Height - Seated (Max) | 1.33mm | 1.33mm | ✓ |
| Thermal Resistance | 13°C/W | 13°C/W | ✓ |
| Mounting Type | Surface Mount | Surface Mount | ✓ |
| RoHS Status | RoHS Compliant | RoHS Compliant | ✓ |
| MSL Rating | 2A (4 Weeks) | 2A (4 Weeks) | ✓ |
| Product Status | Active | Active | ✓ |
Engineering Selection Recommendations
Both the MLCSWT-A1-0000-000X51 and MLCSWT-A1-0000-000XE1 are active production parts from CreeLED, Inc., with full RoHS compliance and identical electrical and mechanical specifications. Selection between these parts should be based on inventory availability and procurement lead times. The MLCSWT-A1-0000-000XE1 offers higher stock availability (5400 units) compared to the MLCSWT-A1-0000-000X51 (897 units), making it suitable for high-volume production runs or applications requiring extended supply assurance. Both parts meet MSL 2A moisture sensitivity requirements and carry identical thermal and optical performance characteristics. No performance trade-offs exist between these alternatives.
Frequently Asked Questions (FAQ)
Q: Are MLCSWT-A1-0000-000X51 and MLCSWT-A1-0000-000XE1 electrically interchangeable?
A: Yes. Both parts operate at identical forward voltage (6.4V), test current (50mA), and maximum current (175mA). They produce the same luminous flux (29lm) and efficiency (91 lm/W) at rated conditions.
Q: Can these parts be used interchangeably in PCB assembly?
A: Yes. Both parts share identical package configuration (4-SMD, J-Lead Exposed Pad), physical dimensions (4.60mm × 3.15mm), and mounting height (1.33mm maximum). No PCB layout or assembly process modifications are required.
Q: Do both parts meet the same compliance standards?
A: Yes. Both MLCSWT-A1-0000-000X51 and MLCSWT-A1-0000-000XE1 are RoHS Compliant, carry MSL 2A rating (4 weeks), and are classified as REACH Unaffected with ECCN EAR99.
Q: What is the difference between these two part numbers?
A: The parts are functionally and mechanically identical. The difference lies in packaging lot designation and inventory source, with MLCSWT-A1-0000-000XE1 representing a higher-stock alternative from the same manufacturer.
Q: Are there any thermal performance differences?
A: No. Both parts have identical thermal resistance of 13°C/W, ensuring equivalent thermal management in circuit applications.
Q: What is the color rendering index (CRI) for both parts?
A: Both parts have a CRI of 75 (Typical), providing consistent color accuracy for cool white (6500K) lighting applications.
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