LCW100Z1 Equivalent & Substitute Parts

Part Overview

The LCW100Z1 is a cool white surface mount LED indication component manufactured by Seoul Semiconductor Inc. with a dominant wavelength of 5400K. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The component operates at 3.2V forward voltage with a 20mA test current and provides 2000mcd luminous intensity in a compact 3528 metric package (1411).

Substiute Parts

LCW100Z1

Seoul Semiconductor Inc.In Stock: 950LCW100Z1 Datasheet

Current PartRFQ

ASMT-UWB2-NX3B2

Broadcom LimitedIn Stock: 1077ASMT-UWB2-NX3B2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCW100Z1 is determined by the following critical parameters:

• Forward Voltage (Vf): 3.2V nominal
• Test Current: 20mA
• Color Category: White, Cool (cool white spectrum)
• Mounting Type: Surface Mount
• Viewing Angle: 120°
• Package Configuration: Surface mount LED in compact form factor

The ASMT-UWB2-NX3B2 qualifies as a substitute based on matching forward voltage, test current, color category, mounting type, and viewing angle. While the package designation differs (2-PLCC versus 1411), both are surface mount configurations with compatible footprint dimensions and height profiles suitable for equivalent circuit board integration.

Parameter Comparison

Engineering Selection Recommendations

The ASMT-UWB2-NX3B2 is the qualified substitute for the obsolete LCW100Z1. Selection is supported by:

• Electrical Compatibility: Identical forward voltage (3.2V) and test current (20mA) ensure direct circuit compatibility without modification to current-limiting resistor calculations.
• Optical Compatibility: Both components operate in the cool white spectrum with 120° viewing angle, maintaining equivalent light distribution characteristics in indication applications.
• Product Status: The ASMT-UWB2-NX3B2 is active production status, ensuring long-term availability and supply chain continuity.
• Compliance: The substitute meets ROHS3 and REACH compliance requirements, supporting modern regulatory standards.
• Physical Integration: Comparable footprint dimensions (3.20mm x 2.80mm versus 4.60mm x 2.80mm) and height profile (2.10mm versus 1.60mm) permit direct board layout substitution with minimal design revision.

Frequently Asked Questions (FAQ)

Q: Can the ASMT-UWB2-NX3B2 directly replace the LCW100Z1 without circuit modification?

A: Yes. Both components share identical forward voltage (3.2V) and test current (20mA) specifications. No resistor or voltage supply adjustments are required.

Q: What is the difference in wavelength between these components?

A: The LCW100Z1 operates at 5400K dominant wavelength, while the ASMT-UWB2-NX3B2 operates at 6500K. Both fall within the cool white spectrum. The 1100K difference represents a slight shift toward higher color temperature (cooler appearance) in the substitute.

Q: Are the packages physically compatible?

A: The LCW100Z1 uses a 1411 (3528 Metric) package, and the ASMT-UWB2-NX3B2 uses a 2-PLCC package. Both are surface mount configurations with similar footprint dimensions. The substitute is 0.5mm taller (2.10mm versus 1.60mm), which must be verified against board clearance requirements.

Q: Does the substitute meet current regulatory requirements?

A: Yes. The ASMT-UWB2-NX3B2 is ROHS3 compliant and REACH unaffected, meeting modern environmental and safety standards.

Q: What is the millicandela rating of the substitute?

A: The millicandela rating for the ASMT-UWB2-NX3B2 is not specified in the available data. Luminous intensity should be verified against application requirements before final selection.