The **BTL-54NRC-O2-P** is a specific type of **Light Emitting Diode (LED)** component. Based on the standard nomenclature for optoelectronic parts, this model belongs to the family of high-brightness through-hole LEDs, typically used in status indicators and illumination. --- ### 1. Key Technical Specifications The following table outlines the general electronic characteristics for this series: | Parameter | Typical Value | | :--- | :--- | | **Component Type** | Through-Hole LED | | **Diameter** | 5mm (T-1 3/4) | | **Color** | Red (typically High Efficiency) | | **Lens Type** | Water Clear (C) or Color Diffused | | **Forward Voltage ($V_f$)** | 1.8V to 2.2V | | **Forward Current ($I_f$)** | 20mA (Continuous) | | **Peak Wavelength** | ~630nm - 660nm | | **Luminous Intensity** | High Brightness (varies by binning) | --- ### 2. Electronic Pinout and Polarity Like all standard diodes, the BTL-54NRC-O2-P is a polarized component with two leads: * **Anode (+):** The longer lead. This must be connected to the positive side of the power supply. * **Cathode (-):** The shorter lead. There is usually a "flat edge" on the plastic circular base of the LED indicating the cathode side. --- ### 3. Application Circuit To prevent the LED from burning out, a **Current Limiting Resistor** must be used in series. **Formula to calculate the resistor ($R$):** $$R = \frac{V_{source} - V_f}{I_f}$$ **Example:** If using a 5V supply and the LED has a $V_f$ of 2.0V at 20mA (0.02A): $$R = \frac{5 - 2.0}{0.02} = 150 \Omega$$ ```cpp // Typical usage in a microcontroller environment (e.g., Arduino) void setup() { pinMode(13, OUTPUT); // Connect Anode to Pin 13 via 220 ohm resistor } void loop() { digitalWrite(13, HIGH); // Turn LED on delay(1000); digitalWrite(13, LOW); // Turn LED off delay(1000); } ``` --- ### 4. Part Number Breakdown (Estimated) * **BTL:** Manufacturer prefix (often associated with brands like Bright Led Electronics). * **5:** Refers to the 5mm (T-1 3/4) package size. * **4:** Specific series or shape variation. * **NR:** High Efficiency Red material (usually GaAsP/GaP). * **C:** Clear Lens (provides a narrow, focused beam). * **O2/P:** Packaging/Binning/Lead length specifications.