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LED LH351B SPHWH2L3D30CD4TPK3 Equivalent & Substitute Parts
Part Overview
The SPHWH2L3D30CD4TPK3 is a surface-mount LED from Samsung Semiconductor's LH351B series, featuring neutral white 4000K color temperature in a 3535 metric package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. Organizations requiring this LED for ongoing production, maintenance, or legacy system support must identify functionally equivalent alternatives that maintain electrical and mechanical compatibility within the specified parameters.
Substiute Parts
Key Parameters
| Parameter | Value | Unit | Substitution Relevance |
|---|---|---|---|
| Color Temperature (CCT) | 4000K | Kelvin | Critical - defines color appearance |
| Forward Voltage (Vf) | 2.8V | Volts | Critical - affects circuit design |
| Test Current | 350mA | Milliamps | Critical - standard operating point |
| Luminous Flux @ 85°C | 145lm (130-160lm) | Lumens | Important - brightness specification |
| Viewing Angle | 120° | Degrees | Important - light distribution |
| Package Type | 3535 Metric (1414) | - | Critical - mechanical compatibility |
| Maximum Current | 1.5A | Amperes | Important - thermal limits |
| Thermal Resistance | 4°C/W | °C/W | Important - heat dissipation |
| CRI (Color Rendering Index) | 70 | - | Important - color accuracy |
| RoHS Compliance | Compliant | - | Critical - regulatory requirement |
Substitute Part Grouping Explanation
Substitution of the SPHWH2L3D30CD4TPK3 is determined by strict alignment across the following parameters:
Electrical Compatibility Requirements:
- Color Temperature: 4000K neutral white (exact match required)
- Forward Voltage: 2.8V nominal (tolerance range: 2.6V–3.0V acceptable)
- Test Current: 350mA standard operating point
- Maximum Current Rating: 1.5A or greater
- CRI: 70 or higher
Mechanical Compatibility Requirements:
- Package: 3535 metric (1414) surface-mount only
- Mounting Type: Surface mount
- Physical dimensions compatible with 3.5mm × 3.5mm footprint
Regulatory & Compliance Requirements:
- RoHS Compliant status mandatory
- ECCN classification: EAR99 (export control alignment)
Performance Characteristics:
- Luminous flux output within acceptable range for application
- Viewing angle: 115° to 120° acceptable
- Thermal resistance: 4°C/W or lower
The substitute part XPGBWT-01-0000-00KE5 meets all substitution criteria within these defined parameters.
Parameter Comparison
| Parameter | SPHWH2L3D30CD4TPK3 (Samsung LH351B) | XPGBWT-01-0000-00KE5 (CreeLED XP-G2) | Compatibility Status |
|---|---|---|---|
| Manufacturer | Samsung Semiconductor, Inc. | CreeLED, Inc. | Different manufacturer |
| Series | LH351B | XLamp® XP-G2 | Different series |
| Product Status | Not For New Designs | Active | Substitute is active |
| Color / CCT | White, Neutral 4000K | White, Neutral 4000K | Match |
| Forward Voltage (Vf) | 2.8V | 2.72V | Compatible (0.08V difference) |
| Test Current | 350mA | 350mA | Match |
| Luminous Flux @ 85°C | 145lm (130–160lm) | 160lm (156–164lm) | Compatible (higher output) |
| Lumens/Watt @ Test Current | 148 lm/W | 168 lm/W | Compatible (higher efficiency) |
| CRI | 70 | 70 (Typ) | Match |
| Maximum Current | 1.5A | 1.5A | Match |
| Viewing Angle | 120° | 115° | Compatible (5° difference) |
| Package / Case | 3535 Metric (1414) | 3535 Metric (1414) | Match |
| Size / Dimension | 3.50mm × 3.50mm | 3.45mm × 3.45mm | Compatible (0.05mm tolerance) |
| Height - Seated (Max) | 2.06mm | 2.39mm | Compatible (0.33mm difference) |
| Thermal Resistance | 4°C/W | 4°C/W | Match |
| Mounting Type | Surface Mount | Surface Mount | Match |
| RoHS Status | RoHS Compliant | RoHS Compliant | Match |
| ECCN | EAR99 | EAR99 | Match |
| Packaging Type | Tape & Reel (TR) | Cut Tape (CT) | Different packaging format |
Engineering Selection Recommendations
Primary Substitute: XPGBWT-01-0000-00KE5 (CreeLED XLamp® XP-G2)
The XPGBWT-01-0000-00KE5 is the qualified substitute for SPHWH2L3D30CD4TPK3 based on the following engineering criteria:
Electrical Compatibility: Forward voltage of 2.72V is within acceptable tolerance of the 2.8V specification (0.08V variance). This minor difference is accommodated by standard LED driver circuit design margins. Test current remains identical at 350mA, ensuring equivalent power consumption and thermal behavior at the standard operating point.
Optical Compatibility: Both components maintain 4000K neutral white color temperature and 70 CRI, ensuring identical color appearance and rendering characteristics. The substitute delivers 160lm at 85°C versus 145lm for the original part, representing a 10% brightness increase. This higher output is compatible with applications designed for the original part and does not introduce thermal or electrical stress beyond specified limits.
Mechanical Compatibility: The 3535 metric package footprint is identical. Physical dimensions of 3.45mm × 3.50mm are within standard PCB layout tolerances. Maximum seated height of 2.39mm versus 2.06mm represents a 0.33mm increase, which is acceptable for standard surface-mount assembly processes and does not affect clearance in typical enclosure designs.
Regulatory & Compliance: Both components carry RoHS Compliant status and EAR99 ECCN classification, meeting identical regulatory requirements. The substitute is classified as "Active" product status, ensuring long-term availability and supply chain stability compared to the "Not For New Designs" status of the original part.
Thermal Performance: Identical thermal resistance of 4°C/W ensures equivalent heat dissipation characteristics. Maximum current rating of 1.5A is identical, maintaining thermal safety margins.
Packaging Consideration: The original part is supplied in Tape & Reel (TR) format, while the substitute is available in Cut Tape (CT) format. This difference affects handling and assembly logistics but does not impact electrical or mechanical performance.
Frequently Asked Questions (FAQ)
Q: Can the XPGBWT-01-0000-00KE5 be used as a direct drop-in replacement for SPHWH2L3D30CD4TPK3?
A: Yes, within the constraints of standard PCB layout tolerances. The 3535 metric package footprint is identical. The 0.33mm difference in seated height does not affect standard surface-mount assembly or typical enclosure clearances. Forward voltage difference of 0.08V is within normal LED driver circuit tolerance margins.
Q: What is the impact of the 160lm output versus 145lm on system performance?
A: The substitute delivers approximately 10% higher luminous flux. This increase is compatible with applications designed for the original part and does not introduce thermal stress beyond the specified 1.5A maximum current rating. If brightness consistency is critical, circuit current can be reduced slightly to match original output levels.
Q: Are there any differences in color appearance between these two LEDs?
A: No. Both components maintain 4000K color temperature and 70 CRI, ensuring identical color appearance and rendering characteristics across the visible spectrum.
Q: Why is the substitute part classified as "Active" while the original is "Not For New Designs"?
A: The original Samsung LH351B series has reached end-of-life status in Samsung's product portfolio. The CreeLED XLamp® XP-G2 series remains in active production, ensuring long-term availability and supply chain continuity for ongoing manufacturing and maintenance applications.
Q: Does the packaging format change from Tape & Reel to Cut Tape affect compatibility?
A: Packaging format affects handling, storage, and assembly logistics but does not impact electrical or mechanical performance. Cut Tape format may require different feeder equipment in automated assembly processes. Verify feeder compatibility with your assembly equipment before implementation.
Q: What is the maximum current rating for both components?
A: Both components are rated for 1.5A maximum current. Standard operation at 350mA test current provides substantial thermal margin. Do not exceed 1.5A to maintain thermal safety and component reliability.
Q: Are both components RoHS compliant?
A: Yes. Both SPHWH2L3D30CD4TPK3 and XPGBWT-01-0000-00KE5 are RoHS Compliant, meeting identical regulatory requirements for hazardous substance restrictions.
Q: What is the viewing angle difference between 120° and 115°?
A: The 5° difference represents a minor variation in light distribution pattern. The substitute's 115° viewing angle is slightly narrower, concentrating light output within a marginally tighter cone. This difference is negligible for most general lighting applications and does not affect compatibility in standard designs.
Q: Can circuit current be adjusted to match original brightness levels?
A: Yes. The substitute's higher efficiency (168 lm/W versus 148 lm/W) allows proportional current reduction to achieve equivalent brightness output. Consult LED driver specifications to confirm current adjustment capability within your circuit design.
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