## Technical Overview: LSR9033-T-TR2-R The **LSR9033-T-TR2-R** is a specific electronic component belonging to the **Light Emitting Diode (LED)** category, typically manufactured by companies like **LITE-ON**. It is a surface-mount device (SMD) designed for status indication and backlighting. --- ### 1. Key Technical Specifications Below are the primary electrical and physical characteristics of the device: | Feature | Specification | | :--- | :--- | | **Component Type** | SMD LED | | **Color** | Super Red | | **Wavelength** | ~631 nm (Dominant) | | **Forward Voltage ($V_F$)** | Typically 2.0V (Max ~2.4V) | | **Luminous Intensity** | ~45 - 112 mcd @ 20mA | | **Package Size** | 0603 (1608 Metric) | | **Viewing Angle** | 130° | | **Operating Temp** | -40°C to +85°C | --- ### 2. Functional Breakdown #### A. Material Composition This LED is generally constructed using **AlGaInP** (Aluminum Gallium Indium Phosphide) on a GaAs substrate. This technology allows for high brightness and efficiency in the red spectrum compared to older GaAsP technologies. #### B. Packaging (0603 Form Factor) The "0603" designation refers to the physical dimensions: * **Length:** 1.6 mm * **Width:** 0.8 mm * **Height:** 0.4 mm to 0.6 mm (Low profile) #### C. Mounting and Soldering * **SMT (Surface Mount Technology):** Designed for automated pick-and-place machines. * **Reflow Soldering:** Compatible with infrared and vapor phase reflow processes. * **T-TR2-R Suffix:** Usually denotes the packaging style, specifically **Tape & Reel** (7-inch reel) for industrial manufacturing. --- ### 3. Application Areas Because of its small footprint and high reliability, the LSR9033 is commonly used in: 1. **Consumer Electronics:** Indicator lights for power/charging in smartphones or tablets. 2. **Network Hardware:** Status LEDs for routers and switches. 3. **Automotive:** Dashboard backlighting and internal button illumination. 4. **Industrial:** Signal indicators on PCB control boards. --- ### 4. Circuit Implementation Example When integrating this LED, a current-limiting resistor is mandatory to prevent burnout. ```python # Formula to calculate Resistance (R) # R = (Source_Voltage - Forward_Voltage) / Target_Current # Example: 5V Supply, 20mA (0.02A) Target Current # R = (5V - 2.0V) / 0.02A # R = 150 Ohms ```