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Product Detailed Parameters
- Description：LED BLUE/RED 4SMD BOTTOM ENT
- Series：-
- Mfr：Quelighting Corp
- Package：Tape & Reel (TR),Cut Tape (CT)
- Color：Blue, Red
- Configuration：Independent
- Lens Color：-
- Lens Transparency：-
- Millicandela Rating：130mcd Blue, 120mcd Red
- Lens Style：Square with Flat Top
- Lens Size：1.40mm x 1.25mm
- Voltage - Forward (Vf) (Typ)：3.15V Blue, 2.15V Red
- Current - Test：20mA Blue, 20mA Red
- Viewing Angle：120°
- Mounting Type：Surface Mount, Bottom Entry
- Wavelength - Dominant：472nm Blue, 624nm Red
- Wavelength - Peak：470nm Blue, 632nm Red
- Features：-
- Package / Case：4-SMD, No Lead
- Supplier Device Package：4-SMD
- Size / Dimension：3.20mm L x 1.25mm W
- Height (Max)：1.20mm
- Grade：-
- Qualification：-
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Overview
The QLSP15RNB is a dual-color surface-mount LED indicator from Quelighting Corp, featuring red and blue emitters in a compact SMD-4P package measuring 3.2x1.3mm. It operates with a forward current of 20mA per color and offers a wide viewing angle of 120 degrees. The device emits dominant wavelengths at 624nm for red and 472nm for blue, with peak wavelengths at 632nm and 470nm respectively. Forward voltages are specified at 2.15V for the red channel and 3.15V for the blue channel. Luminous intensities reach 120mcd and 130mcd.
Feature Summary
- Dual-color configuration combining red and blue LEDs within a single discrete component
- Surface mount bottom entry design suitable for automated assembly processes
- Wide 120-degree viewing angle ensures visibility across broad observation sectors
Applications
- Status indication on electronic control boards
- Visual signaling in consumer appliance interfaces
- Indicator lighting for portable digital devices
Procurement Notes
Verify the specific ordering suffix to confirm exact wavelength and voltage tolerances as defined by the manufacturer. Ensure compatibility with standard surface mount reflow profiles. Confirm package dimensions match the target footprint requirements. Validate electrical parameters against circuit design limits before integration.
Selection Notes
Choose this component when space constraints require a dual-color solution in a minimal footprint. The low profile and bottom entry mounting facilitate dense PCB layouts. Consider the specific forward voltage requirements for both colors to ensure proper driver circuit design and current limiting resistor selection.
Part Context
This part belongs to the QLSP series of discrete LED indicators designed for modern electronics. It represents a shift toward multi-functional components that reduce board space usage. The series emphasizes reliability and consistent optical performance for industrial and consumer applications requiring clear visual feedback.
Replacement Considerations
QLSP15RGB serves as a related variant within the same product family, offering an additional green channel for full RGB functionality while maintaining similar physical dimensions.
