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Product Detailed Parameters
- Description：LED
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Bulk
- Color：-
- Configuration：-
- Lens Color：-
- Lens Transparency：-
- Millicandela Rating：-
- Lens Style：-
- Lens Size：-
- Voltage - Forward (Vf) (Typ)：-
- Current - Test：-
- Viewing Angle：-
- Mounting Type：-
- Wavelength - Dominant：-
- Wavelength - Peak：-
- Features：-
- Package / Case：-
- Supplier Device Package：-
- Size / Dimension：-
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Overview
The 57-21-Y2SC-AS1T1B-BF is a single-color surface-mount LED manufactured by Everlight Electronics Co Ltd. It belongs to the 0603 package series with a height of 0.8mm, designed for high packing density and miniature applications. The component utilizes AlGaInP material technology to emit brilliant yellow-green light. Key electrical parameters include a forward voltage of 2V at a test current of 50mA. The optical performance specifies a luminous intensity range of 14.5 to 36 mcd when driven at 20mA. The dominant wavelength falls within the 567.5nm to 575.5nm spectrum, ensuring consistent color output for indicator and backlighting purposes.
Feature Summary
- Compact 0603 SMD package design enabling smaller board sizes and higher packing density
- Compatible with automatic placement equipment and standard reflow solder processes
- Mono-color emission utilizing AlGaInP material for reliable optical performance
- Lead-free construction compliant with environmental standards
Applications
- Automotive dashboard and switch backlighting
- Telecommunication device indicators and LCD backlighting
- General purpose electronic status indicators
Procurement Notes
Verify the specific ordering suffix against the official Everlight datasheet to ensure correct lens color and binning specifications. Confirm that the requested variant matches the required dominant wavelength and luminous intensity ranges for your application. Check for any recent revisions to the technical data sheet that may affect mechanical dimensions or soldering profiles. Ensure compatibility with your existing supply chain requirements regarding lead-free compliance and packaging formats.
Selection Notes
Select this component when space constraints require a low-profile 0.8mm height SMD LED. Consider the 0603 form factor for applications demanding high packing density on printed circuit boards. Evaluate the 567.5-575.5nm wavelength range against visual visibility requirements in your specific environment. Verify that the 2V forward voltage aligns with your system's drive circuit capabilities and power budget constraints.
Part Context
This part belongs to Everlight's 19-21 series of chip LEDs, which are engineered for miniature applications due to their lightweight and small footprint. The series replaces larger lead-frame type components to facilitate reduced storage space and equipment size. It represents a standard solution for general-purpose indication where compactness and reliability are prioritized over high-intensity output.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the 0603 package, 0.8mm height, yellow-green wavelength, and electrical characteristics with other manufacturers' offerings.
