LTST-C281TBKT Blue Low-Current Surface Mount LED (2.9V, 5mA, 0805)

Add crisp blue status indication to your low-power electronics with the LTST-C281TBKT surface-mount LED from Lite-On. Operating at a low forward current of just 5mA and a typical forward voltage of 2.9V, this component is specially engineered for energy-conscious designs. Standard LEDs often demand 15–20mA, making them unsuitable for prolonged battery operation. The LTST-C281TBKT delivers vivid blue light output while consuming a fraction of the power, extending operational life in portable and wireless devices.

Directly drivable from 3.3V microcontroller logic outputs (ESP32, STM32, RP2040) with a low-value series resistor, it eliminates the need for external transistor drivers. Housed in an industry-standard 0805 (2012 metric) package with a clear lens, it provides a reliable, high-visibility blue indicator for power rails, Bluetooth connectivity status, and network activity.

Key Features:

• Low Current Operation (5mA): Optimized for low power consumption, preserving battery life in IoT and wearable applications.

• 3.3V Logic Friendly: Low 2.9V forward voltage enables direct driving from 3.3V microcontroller GPIO lines without complex driver stages.

• Vivid Blue Illumination: Delivers clear, high-contrast blue light output for modern status feedback.

• Standard 0805 Footprint: Compact 2.0 x 1.25 mm surface-mount package is easy to solder by hand or via automated SMT reflow.

Specifications:

• Part Number: LTST-C281TBKT

• Manufacturer: Lite-On

• Component Type: Single Color SMD LED

• Emitted Color: Blue (InGaN)

• Forward Voltage ($V_F$): 2.9V (Typical)

• Forward Current ($I_F$): 5mA

• Package Type: 0805 SMD / SMT (2012 Metric)