Cree Manufacturer Skill

Company Overview

Cree, Inc. (now Wolfspeed for SiC/power and branded as Cree LED after the 2021 spin-off) is known for:

• High-Power LEDs: XLamp series, industry-standard for lighting applications
• Silicon Carbide (SiC): Power devices for EVs, industrial, and energy applications
• LED Components: CLV series, CLVBA series for general illumination

Note: Cree LED was acquired by SMART Global Holdings in 2021 and continues to operate as Cree LED. The Wolfspeed brand focuses on SiC power devices.

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MPN Structure

Cree LED MPNs follow this general structure:

CLV Series (Standard LEDs)

CLV[SERIES][VARIANT]-[COLOR][BIN]
│   │       │         │     │
│   │       │         │     └── Bin code (brightness/color bin): A, B, C, etc.
│   │       │         └── Color code: FK=warm white, WK=cool white
│   │       └── Variant letter: A, B, etc.
│   └── Series number: 1, 2, 6, etc.
└── CLV = Cree LED Vertical series

CLVBA Series (Bin-Coded LEDs)

CLVBA-[COLOR][BIN]
│      │     │
│      │     └── Bin code: A, B, C (brightness bin within color)
│      └── Color family: FK=warm white, WK=cool white
└── CLVBA = Cree LED Vertical Bin-coded A series

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Example Decoding

CLV1A-FKA
│  ││  │ │
│  ││  │ └── A = Brightness bin code
│  ││  └── FK = Warm white (typically 2700-3000K)
│  │└── A = Variant A
│  └── 1 = Series 1 (size/power category)
└── CLV = Cree LED Vertical

CLVBA-FKB
│     │ │
│     │ └── B = Brightness bin B (slightly different from A)
│     └── FK = Warm white color family
└── CLVBA = Cree LED Vertical Bin-coded A series

CLV6A-WKA
│  ││  │ │
│  ││  │ └── A = Brightness bin
│  ││  └── WK = Cool white (typically 5000-6500K)
│  │└── A = Variant A
│  └── 6 = Series 6 (larger/higher power)
└── CLV = Cree LED Vertical

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Series Prefixes

Prefix	Type	Description
CLV	High-power LED	Vertical structure LED, general lighting
CLVBA	Bin-coded LED	Specific brightness/color bin coding
XLamp	XLamp series	Professional lighting LEDs (XP, XM, XHP series)

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Color Codes

Code	Color Temperature	Description
FK	2700K-3000K	Warm white, residential lighting
WK	5000K-6500K	Cool white, commercial/daylight

Note: The current CreeHandler only implements CLV and CLVBA series. XLamp series (XP-E, XM-L, XHP) patterns are not yet registered.

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Bin Codes

Suffix	Meaning
A	Standard brightness bin
B	Slightly different brightness (within tolerance)
C	Another brightness bin

LEDs with the same series but different bin codes (e.g., CLVBA-FKA vs CLVBA-FKB) are considered interchangeable/replacements as they have the same color temperature and similar brightness.

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Handler Implementation Notes

Package Code Extraction

// For CLVBA series, returns "SMD" (Surface Mount Device)
// CLVBA-FKA -> "SMD"
// CLVBA-WKB -> "SMD"

// For other CLV series, returns empty string
// CLV1A-FKA -> ""

Current Limitation: Package code extraction only handles CLVBA series. Other series return empty string.

Series Extraction

// For CLVBA series: returns everything except last character (bin code)
// CLVBA-FKA -> "CLVBA-FK"
// CLVBA-WKB -> "CLVBA-WK"

// For other CLV series: returns part before dash
// CLV1A-FKA -> "CLV1A"
// CLV2B-WKA -> "CLV2B"

Replacement Detection

// LEDs with same series are considered official replacements
// (same footprint, similar brightness, same color)
isOfficialReplacement("CLVBA-FKA", "CLVBA-FKB") -> true  // Same series (CLVBA-FK)
isOfficialReplacement("CLVBA-FKA", "CLVBA-WKA") -> false // Different series (FK vs WK)

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Supported Component Types

ComponentType	Description
LED	Generic LED type
LED_HIGHPOWER_CREE	Cree-specific high-power LED
LED_STANDARD_KINGBRIGHT	Inherited from generic LED handler (may not be applicable)
LED_RGB_KINGBRIGHT	Inherited from generic LED handler (may not be applicable)
LED_SMD_KINGBRIGHT	Inherited from generic LED handler (may not be applicable)

Note: The getSupportedTypes() includes some Kingbright types that may be legacy or incorrect. The primary types used are LED and LED_HIGHPOWER_CREE.

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Registered Patterns

Pattern	Component Type	Description
^CLV.*	LED	Any CLV series LED
^CLV.*	LED_HIGHPOWER_CREE	CLV series as Cree-specific
^CLVBA-[A-Z]{3}$	LED	CLVBA with exactly 3-letter suffix
^CLVBA-[A-Z]{3}$	LED_HIGHPOWER_CREE	CLVBA as Cree-specific

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Common Part Numbers

CLV Series

MPN	Color	Series
CLV1A-FKA	Warm white	CLV1A
CLV1B-FKB	Warm white	CLV1B
CLV2A-FKA	Warm white	CLV2A
CLV6A-FKA	Warm white	CLV6A

CLVBA Series

MPN	Color	Bin
CLVBA-FKA	Warm white	A
CLVBA-FKB	Warm white	B
CLVBA-FKC	Warm white	C
CLVBA-WKA	Cool white	A

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XLamp Series (NOT YET IMPLEMENTED)

Cree's professional XLamp series are commonly used but not yet in the handler:

Series	Description	Example MPN
XP-E	High-efficacy, small footprint	XPEBWT-A1-0000-00F51
XP-E2	2nd generation XP-E	XPEBWT-U1-0000-00BE7
XP-G	High-power, 3.45mm x 3.45mm	XPGWHT-L1-0000-00H51
XP-G2	2nd generation XP-G	XPG2CWHT-000-0000001
XM-L	High-power, up to 1000 lumens	XMLAWT-00-0000-000LT50E5
XHP35	Extreme high power, 35W	XHP35A-00-0000-0D0HB230G
XHP50	Extreme high power, 50W	XHP50A-00-0000-0D0BJ20E2
XHP70	Extreme high power, 70W	XHP70A-00-0000-0D0BP20E5

Future Enhancement: Add patterns for XLamp series.

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Related Files

• Handler: manufacturers/CreeHandler.java
• Component types: LED, LED_HIGHPOWER_CREE
• Test: handlers/CreeHandlerTest.java

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Learnings & Edge Cases

• Handler uses HashSet in getSupportedTypes() - Should be changed to Set.of() for consistency with other handlers (known tech debt)
• Kingbright types in getSupportedTypes() - The handler includes LED_STANDARD_KINGBRIGHT, LED_RGB_KINGBRIGHT, LED_SMD_KINGBRIGHT which appear to be copy-paste leftovers; only LED and LED_HIGHPOWER_CREE are actually used by Cree patterns
• Limited pattern coverage - Only CLV and CLVBA series are implemented; XLamp (XP-E, XM-L, XHP) series are missing
• Color codes FK/WK - FK indicates warm white (2700-3000K), WK indicates cool white (5000-6500K); these are color family codes, not exact CCT
• Bin codes are interchangeable - Same series LEDs with different bin codes (A, B, C) are considered replacements since they have the same footprint and similar specs
• CLVBA pattern is restrictive - Pattern ^CLVBA-[A-Z]{3}$ requires exactly 3 uppercase letters after dash; may not match all real-world variations
• SiC power devices not supported - Cree/Wolfspeed SiC MOSFETs (C3M series) and diodes (C4D series) are not implemented in this handler

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