CLM1C-WKW-CVBWB233 Equivalent & Substitute Parts

Part Overview

The CLM1C-WKW-CVBWB233 is a cool white diffused LED indicator manufactured by CreeLED, Inc., specified for 3.2V discrete applications with 1350mcd brightness in a 2-PLCC surface mount package. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain electrical compatibility (3.2V forward voltage, 20mA test current) and mechanical fit (2-PLCC or compatible package footprint) while meeting current RoHS and REACH compliance requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CLM1C-WKW-CVBWB233
Manufacturer	CreeLED, Inc.
Color	White, Cool
Wavelength - Dominant	6800K
Voltage - Forward (Vf) Typical	3.2V
Current - Test	20mA
Millicandela Rating	1350mcd
Viewing Angle	120°
Package / Case	2-PLCC
Mounting Type	Surface Mount
Lens Transparency	Diffused
Lens Color	Yellow
Size / Dimension	3.20mm L x 2.80mm W
Height (Max)	2.05mm
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts are grouped based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Forward voltage (Vf): 3.2V (exact match required)
Test current: 20mA (exact match required)
Viewing angle: 120° (exact match required)
Mounting type: Surface Mount (exact match required)
Color family: White (Cool, Neutral, or Warm variants acceptable)
Lens transparency: Diffused (exact match required)
Lens color: Yellow (exact match required)
Package compatibility: 2-PLCC or 4-SMD with equivalent footprint dimensions

Grouping Logic:

Direct equivalent: CLM1C-WKW-CWBXB233 maintains identical electrical specifications with higher brightness (1820mcd) and active product status
Compatible alternatives: Broadcom ASMT-UWB1 series parts meet all electrical requirements with enhanced brightness (2300mcd) and improved compliance (ROHS3, MSL 3)

Brightness increase (1350mcd to 1820mcd or 2300mcd) is acceptable in indicator applications where higher luminosity does not create functional conflicts. Package variations (2-PLCC vs. 4-SMD) require PCB layout verification but maintain electrical compatibility.

Parameter Comparison

Parameter	CLM1C-WKW-CVBWB233	CLM1C-WKW-CWBXB233	ASMT-UWB1-NX302	ASMT-UWB1-NX3A2	ASMT-UWB1-NX3B2	ASMT-UWB1-NX3C2	ASMT-UWB1-NX3D2	ASMT-UWB1-NX3E2	ASMT-UWB1-NX3F2
Manufacturer	CreeLED, Inc.	CreeLED, Inc.	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited
Color	White, Cool	White, Cool	White, Cool	White, Cool	White, Cool	White, Cool	White, Cool	White, Neutral	White, Neutral
Wavelength - Dominant	6800K	6800K	4500K ~ 8000K	8000K	6500K	5700K	5000K	4500K	4000K
Voltage - Forward (Vf) Typical	3.2V	3.2V	3.2V	3.2V	3.2V	3.2V	3.2V	3.2V	3.2V
Current - Test	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA
Millicandela Rating	1350mcd	1820mcd	2300mcd	2300mcd	2300mcd	2300mcd	2300mcd	2300mcd	2300mcd
Viewing Angle	120°	120°	120°	120°	120°	120°	120°	120°	120°
Package / Case	2-PLCC	2-SMD, J-Lead	4-SMD, Flat Lead Exposed Pad	2-PLCC	4-SMD, Flat Lead Exposed Pad	4-SMD, Flat Lead Exposed Pad	2-PLCC	4-SMD, Flat Lead Exposed Pad	4-SMD, Flat Lead Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Lens Transparency	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused
Lens Color	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow
Size / Dimension	3.20mm L x 2.80mm W	3.20mm L x 2.70mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W
Height (Max)	2.05mm	2.05mm	2.10mm	2.10mm	2.10mm	2.10mm	2.10mm	2.10mm	2.10mm
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	5A (24 Hours)	5A (24 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

Tier 1 - Direct Equivalent (Recommended for immediate replacement): CLM1C-WKW-CWBXB233 is the primary substitute. It maintains CreeLED manufacturing lineage, identical electrical specifications (3.2V, 20mA, 120° viewing angle), and active product status. The brightness increase to 1820mcd is acceptable for indicator applications. RoHS compliance and improved MSL rating (5A) provide enhanced supply chain stability.

Tier 2 - Compatible Alternatives (Broadcom ASMT-UWB1 Series): The Broadcom ASMT-UWB1 series provides functionally equivalent substitutes with enhanced specifications. All variants maintain 3.2V forward voltage, 20mA test current, and 120° viewing angle. Key advantages include ROHS3 compliance and improved MSL rating (3, 168 hours). Brightness uniformly rated at 2300mcd across the series.

Wavelength Selection within Broadcom Series:

ASMT-UWB1-NX302: 4500K ~ 8000K range (broadest spectrum coverage)
ASMT-UWB1-NX3A2: 8000K (coolest white, closest to daylight)
ASMT-UWB1-NX3B2: 6500K (closest spectral match to CLM1C-WKW-CVBWB233 at 6800K)
ASMT-UWB1-NX3C2: 5700K (neutral-cool)
ASMT-UWB1-NX3D2: 5000K (neutral)
ASMT-UWB1-NX3E2: 4500K (neutral-warm)
ASMT-UWB1-NX3F2: 4000K (warm white)

Package Considerations:

2-PLCC variants (ASMT-UWB1-NX3A2, ASMT-UWB1-NX3D2) provide direct footprint compatibility
4-SMD variants require PCB layout modification but offer improved thermal performance and manufacturing flexibility

Compliance & Supply Chain: All substitute parts carry REACH Unaffected status and EAR99 classification, matching the original part. Broadcom alternatives provide superior long-term availability through active product status and higher inventory levels (9,950 to 92,200 units in stock vs. 884 units for the obsolete CLM1C-WKW-CVBWB233).

Frequently Asked Questions (FAQ)

Q: Can CLM1C-WKW-CWBXB233 be used as a direct drop-in replacement? A: Yes. CLM1C-WKW-CWBXB233 maintains identical electrical specifications (3.2V, 20mA) and mechanical dimensions (3.20mm L x 2.80mm W, 2.05mm height). The package designation differs slightly (2-SMD, J-Lead vs. 2-PLCC), but footprint compatibility is maintained. Brightness increase to 1820mcd does not create functional conflicts in indicator applications.

Q: What is the difference between 2-PLCC and 4-SMD packages? A: 2-PLCC (Plastic Leaded Chip Carrier) uses two leads and is the original package type. 4-SMD (Surface Mount Device) with Flat Lead Exposed Pad uses four leads and provides improved thermal dissipation. Both are surface mount technologies. 4-SMD variants require PCB redesign but offer manufacturing advantages. 2-PLCC variants (ASMT-UWB1-NX3A2, ASMT-UWB1-NX3D2) provide direct footprint compatibility without layout changes.

Q: Why do Broadcom parts have higher brightness (2300mcd vs. 1350mcd)? A: Brightness is determined by LED die efficiency and optical design. Higher brightness does not affect electrical compatibility (same 3.2V, 20mA specifications) and is acceptable in indicator applications where increased luminosity does not create design conflicts. Applications requiring specific brightness levels should evaluate actual performance in their circuit.

Q: Are all substitute parts RoHS compliant? A: CLM1C-WKW-CWBXB233 is RoHS Compliant. All Broadcom ASMT-UWB1 variants are ROHS3 Compliant, representing the current RoHS standard. The original CLM1C-WKW-CVBWB233 does not specify RoHS status due to its obsolete classification.

Q: What does MSL (Moisture Sensitivity Level) mean for component selection? A: MSL indicates how long a component can be stored in ambient conditions before requiring baking. CLM1C-WKW-CVBWB233 and CLM1C-WKW-CWBXB233 are rated MSL 5A (24 hours), requiring immediate use or baking. Broadcom alternatives are rated MSL 3 (168 hours), providing greater handling flexibility and reduced production risk. Lower MSL numbers indicate better moisture tolerance.

Q: Can I use a warm white variant (ASMT-UWB1-NX3G2) instead of cool white? A: Warm white (3500K) differs significantly from cool white (6800K) in color temperature and perceived brightness. Substitution is only acceptable if the application does not specify color temperature requirements. For indicator applications with strict color requirements, use cool white variants: ASMT-UWB1-NX3A2 (8000K), ASMT-UWB1-NX3B2 (6500K), or ASMT-UWB1-NX3C2 (5700K).

Q: What is the inventory status for these parts? A: CLM1C-WKW-CVBWB233 (obsolete) has 884 units in stock. CLM1C-WKW-CWBXB233 has 57,913 units. Broadcom ASMT-UWB1 variants range from 9,950 to 92,200 units, providing reliable long-term supply. For new designs, Broadcom alternatives are recommended due to active product status and higher inventory levels.

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