## Analysis of the BTL-51DRC-R5-R The **BTL-51DRC-R5-R** is a specific electronic component, typically categorized as a **Through-Hole LED (Light Emitting Diode)**. Based on standard industry nomenclature (common in brands like Betlux or similar manufacturers), this part is a high-efficiency red LED designed for indicator and illumination purposes. --- ### 1. Key Technical Specifications Below are the estimated technical characteristics based on the standard datasheet for this series: | Parameter | Specification | | :--- | :--- | | **Component Type** | Through-Hole LED | | **Color** | Red (Super Bright) | | **Lens Appearance** | Red Diffused (typically indicated by "DRC") | | **Diameter** | 5mm (Standard T-1 3/4) | | **Dominant Wavelength** | ~625nm - 635nm | | **Forward Voltage ($V_f$)** | 1.8V to 2.4V (Typical: 2.0V) | | **Forward Current ($I_f$)** | 20mA | | **Luminous Intensity** | 50 - 150 mcd (varies by binning) | | **Viewing Angle** | 30° to 60° (Diffused) | --- ### 2. Part Number Breakdown The alphanumeric code follows a specific logic: * **BTL**: Manufacturer prefix (often Betlux Electronics). * **5**: Diameter indicator (5mm). * **1**: Shape/Type (Standard Round). * **DRC**: **D**iffused **R**ed **C**olor/Case. * **R5**: Specific brightness or wavelength binning (High-efficiency Red). * **-R**: RoHS Compliant (Lead-free). --- ### 3. Connection and Pinout As a standard two-lead through-hole LED, the polarity is critical for operation: * **Anode (+):** The longer lead. Must be connected to the positive side of the circuit. * **Cathode (-):** The shorter lead, often accompanied by a "flat edge" on the plastic LED base. #### Simple Circuit Example To use this LED with a 5V power supply, a current-limiting resistor is required to prevent burnout: ```python # Calculation for Resistor (R): # R = (Source_Voltage - Forward_Voltage) / Forward_Current # R = (5V - 2.0V) / 0.02A = 150 Ohms ``` --- ### 4. Applications * **Status Indicators:** Power ON/OFF lights on consumer electronics. * **Backlighting:** Illuminating small panels or buttons. * **DIY Projects:** Breadboard prototyping with Arduino or Raspberry Pi. * **Automotive:** Interior dash lighting (older models). ---