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LED LH351B SPHWH1L3D30CD4RTK3 Equivalent & Substitute Parts
Part Overview
The SPHWH1L3D30CD4RTK3 is a Samsung Semiconductor LH351B series cool white LED (5000K) in 3535 metric package format, rated for 350mA operation at 2.85V forward voltage. This part carries a "Not For New Designs" status, indicating it has been superseded in Samsung's product line. Alternative equivalent and substitute parts are necessary for new design implementations and ongoing production sourcing where the original part is no longer recommended for development.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SPHWH1L3D30CD4RTK3 |
| Manufacturer | Samsung Semiconductor, Inc. |
| Series | LH351B |
| Color Temperature (CCT) | 5000K (Cool White) |
| Forward Voltage (Vf) Typical | 2.85V |
| Test Current | 350mA |
| Maximum Current | 1.5A |
| Luminous Flux @ 85°C | 145lm (130lm–160lm) |
| Lumens per Watt @ Test Current | 145 lm/W |
| Color Rendering Index (CRI) | 70 |
| Viewing Angle | 120° |
| Package / Case | 1414 (3535 Metric) |
| Size / Dimension | 0.138" L × 0.138" W (3.50mm × 3.50mm) |
| Height – Seated (Max) | 0.081" (2.06mm) |
| Thermal Resistance | 4°C/W |
| Mounting Type | Surface Mount |
| Packaging Format | Tape & Reel (TR) |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 2A (4 Weeks) |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following critical parameters:
- Color Temperature (CCT): Must match or fall within acceptable application tolerance (5000K target)
- Forward Voltage (Vf): Operating voltage must be compatible with circuit design (2.85V nominal acceptable range: 2.72V–2.90V)
- Test Current & Maximum Current: Must support 350mA operation with 1.5A maximum rating
- Package / Case: Must be 1414 (3535 Metric) surface mount format
- Viewing Angle: 115°–120° acceptable for equivalent optical performance
- Thermal Resistance: 4°C/W–5°C/W acceptable range
- Mounting Type: Surface Mount required
- RoHS Compliance: Required for regulatory compliance
Substitute parts are grouped into two categories:
Parametric Equivalent: SPHWH2L3D30CD4RTK3 (Samsung LH351B series, same CCT, minimal voltage variation)
Similar Alternatives: CreeLED XLamp® XT-E and XP-G2 series parts with matching or near-matching CCT, voltage, current, and package specifications. These parts differ in color temperature variants (3000K, 4500K, 4750K, 5700K, 6500K) and represent functional alternatives for applications where exact 5000K specification can be adjusted.
Parameter Comparison
| Parameter | SPHWH1L3D30CD4RTK3 (Main) | SPHWH2L3D30CD4RTK3 (Parametric Equivalent) | XTEAWT-00-0000-000000BJE3 (Similar) | XTEAWT-00-0000-00000BHE1 (Similar) | XTEAWT-00-0000-00000BGE2 (Similar) |
|---|---|---|---|---|---|
| Manufacturer | Samsung Semiconductor | Samsung Semiconductor | CreeLED | CreeLED | CreeLED |
| Series | LH351B | LH351B | XLamp® XT-E | XLamp® XT-E | XLamp® XT-E |
| CCT (K) | 5000K | 5000K | 5000K | 6500K | 5700K |
| Vf (Typ) | 2.85V | 2.8V | 2.9V | 2.85V | 2.85V |
| Test Current | 350mA | 350mA | 350mA | 350mA | 350mA |
| Max Current | 1.5A | 1.5A | 1.5A | 1.5A | 1.5A |
| Flux @ 85°C (lm) | 145 (130–160) | 145 (130–160) | 152 (148–156) | 144 (139–148) | 135 (130–139) |
| lm/W @ Test Current | 145 | 148 | 150 | 144 | 135 |
| CRI | 70 | 70 | 70 | 70 | 70 |
| Viewing Angle | 120° | 120° | 115° | 115° | 115° |
| Package / Case | 1414 (3535 Metric) | 1414 (3535 Metric) | 1414 (3535 Metric) | 1414 (3535 Metric) | 1414 (3535 Metric) |
| Size (mm) | 3.50 × 3.50 | 3.50 × 3.50 | 3.45 × 3.45 | 3.45 × 3.45 | 3.45 × 3.45 |
| Height – Seated (Max) | 2.06mm | 2.06mm | 2.54mm | 2.54mm | 2.54mm |
| Thermal Resistance | 4°C/W | 4°C/W | 5°C/W | 5°C/W | 5°C/W |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Packaging Format | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Cut Tape & Digi-Reel® |
| Product Status | Not For New Designs | Not For New Designs | Active | Active | Active |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Engineering Selection Recommendations
For Parametric Equivalence (Direct Replacement):
SPHWH2L3D30CD4RTK3 provides the closest parametric match to SPHWH1L3D30CD4RTK3. Both are Samsung LH351B series parts with identical 5000K color temperature, matching 350mA test current, and equivalent thermal characteristics (4°C/W). Forward voltage differs minimally (2.8V vs. 2.85V), which is within acceptable circuit tolerance for most applications. However, both parts carry "Not For New Designs" status, limiting their suitability for new product development.
For Active Product Status (New Designs):
CreeLED XLamp® XT-E series parts (XTEAWT variants) are recommended for new design implementations due to their Active product status. XTEAWT-00-0000-000000BJE3 (5000K, 2.9V, 350mA) provides the closest CCT match to the original specification. XTEAWT-00-0000-00000BHE1 (6500K) and XTEAWT-00-0000-00000BGE2 (5700K) offer alternative color temperatures within the cool white range.
Compatibility Considerations:
- Forward voltage variation (2.8V–2.9V) is acceptable for most LED driver circuits designed for 2.85V nominal operation
- Viewing angle reduction from 120° to 115° (CreeLED parts) has minimal impact on optical performance in most applications
- Height increase from 2.06mm to 2.54mm (CreeLED parts) requires PCB layout verification for clearance
- Thermal resistance increase from 4°C/W to 5°C/W (CreeLED parts) requires thermal management review in high-power applications
- All substitute parts maintain RoHS compliance and equivalent MSL ratings
Frequently Asked Questions (FAQ)
Q: Can SPHWH2L3D30CD4RTK3 be used as a direct replacement for SPHWH1L3D30CD4RTK3?
A: Yes, SPHWH2L3D30CD4RTK3 is a parametric equivalent with matching color temperature (5000K), current rating (350mA), and package format (3535 metric). Forward voltage differs by 0.05V (2.8V vs. 2.85V), which is within acceptable tolerance for standard LED driver circuits. Both parts share "Not For New Designs" status.
Q: Why are CreeLED XLamp® XT-E parts listed as substitutes if they have different color temperatures?
A: CreeLED XLamp® XT-E parts are listed as similar alternatives because they meet the critical electrical and mechanical parameters: 350mA test current, 1.5A maximum current, 1414 (3535 metric) package, surface mount configuration, and RoHS compliance. Multiple color temperature variants (5000K, 5700K, 6500K, 4750K, 4500K) are provided to accommodate applications where exact 5000K specification can be adjusted. XTEAWT-00-0000-000000BJE3 (5000K) provides the closest CCT match.
Q: What is the impact of the 0.48mm height difference between Samsung and CreeLED parts?
A: Samsung SPHWH1L3D30CD4RTK3 has a seated height of 2.06mm, while CreeLED XLamp® XT-E parts measure 2.54mm. This 0.48mm increase requires verification of PCB clearance, solder reflow profile compatibility, and any mechanical constraints in the application. Thermal interface materials or heat sink designs may require adjustment.
Q: Are all substitute parts RoHS compliant?
A: Yes, all listed substitute parts (SPHWH2L3D30CD4RTK3, XTEAWT variants, and XPGBWT-U1-0000-00BE7) are RoHS compliant. The original part SPHWH1L3D30CD4RTK3 is also RoHS compliant.
Q: What is the difference between Tape & Reel (TR) and Cut Tape & Digi-Reel® packaging?
A: Tape & Reel (TR) is standard reel packaging for automated pick-and-place assembly. Cut Tape & Digi-Reel® (used for XTEAWT-00-0000-00000BGE2) provides flexibility for lower-volume orders or mixed component sourcing. Both formats are compatible with standard SMT assembly equipment; selection depends on production volume and inventory management requirements.
Q: Why is XPGBWT-U1-0000-00BE7 (3000K warm white) listed as a substitute?
A: XPGBWT-U1-0000-00BE7 is listed as a similar alternative based on matching electrical parameters (350mA test current, 1.5A maximum, 2.72V forward voltage) and package format (3535 metric). However, its 3000K color temperature differs significantly from the 5000K specification. This part is suitable only for applications where warm white color temperature is acceptable or where color temperature adjustment is feasible.
Q: What thermal resistance difference should I account for when switching from Samsung to CreeLED parts?
A: Samsung SPHWH1L3D30CD4RTK3 has 4°C/W thermal resistance, while CreeLED XLamp® XT-E parts have 5°C/W. This 1°C/W increase means junction temperature will rise approximately 1°C for every watt of power dissipation under identical thermal conditions. For 350mA operation at 2.85V (approximately 1W dissipation), the temperature rise difference is approximately 1°C. Thermal management review is recommended for applications operating near maximum current or in high-ambient-temperature environments.
Q: Can I use XTEAWT-00-0000-00000BHE1 (6500K) instead of the 5000K original part?
A: XTEAWT-00-0000-00000BHE1 meets all electrical and mechanical compatibility requirements (350mA, 1.5A max, 2.85V, 3535 package, 115° viewing angle). However, 6500K is cooler than 5000K and will produce visibly different color appearance. Use only if the application permits color temperature adjustment or if cooler white light is acceptable.
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