The **LEDSL5DG** (often associated with brands like FEIT Electric) is a high-efficiency **LED Green Light Bulb**. It is primarily used for decorative, holiday, or landscape lighting. Below is a breakdown of its electronic composition and technical specifications. --- ## 1. Technical Specifications This bulb is designed as an energy-efficient replacement for a standard 40W–60W incandescent bulb while consuming significantly less power. | Parameter | Specification | | :--- | :--- | | **Wattage** | ~5 Watts | | **Equivalent Wattage** | 40W - 60W | | **Voltage** | 120V AC | | **Base Type** | E26 (Standard Medium Base) | | **Color** | Green (Wavelength ~520-550nm) | | **Bulb Shape** | A19 | | **Lifespan** | 11,000 to 15,000 Hours | | **Dimmable** | Generally No (Varies by specific model) | --- ## 2. Electronic Components Inside An LED bulb like the LEDSL5DG contains three primary electronic sections located within the base and the globe: ### A. The LED Array (SMD LEDs) Instead of a filament, this bulb uses **Surface Mounted Device (SMD) LEDs**. - These LEDs are manufactured to emit green light directly (using Indium Gallium Nitride / InGaN semiconductors) rather than using a white LED with a green plastic filter. - This makes the color much more vibrant and the bulb more efficient. ### B. The LED Driver (Internal Circuitry) Since house outlets provide 120V AC and LEDs require low-voltage DC, the "driver" circuit inside the base performs several functions: 1. **Rectification:** A bridge rectifier converts the Alternating Current (AC) from your wall into Direct Current (DC). 2. **Step-Down Transformation:** A small transformer or a switching regulator drops the voltage from 120V to approximately 12V–24V DC. 3. **Current Regulation:** This ensures the LEDs receive a constant current to prevent overheating and flickering. ### C. Thermal Management - **Heat Sink:** Most 5W LED bulbs use an internal aluminum or thermally conductive plastic heat sink to dissipate heat away from the LED chips. - **Housing:** The outer shell is usually shatter-resistant plastic or glass, treated to diffuse the green light evenly. --- ## 3. Key Advantages * **Low Heat Emission:** Unlike incandescent green bulbs, the LEDSL5DG stays cool to the touch, making it safer for outdoor fixtures near foliage. * **Energy Savings:** It consumes roughly 90% less energy than an equivalent incandescent bulb. * **Instant On:** There is no "warm-up" time; the driver reaches full brightness in milliseconds.