The **KA-4008ZGS-G** is a high-performance Surface Mount (SMD) Light Emitting Diode (LED) manufactured by **Kingbright**. It belongs to the "Subminiature" series and is specifically designed for side-view (right-angle) applications. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and optical characteristics of the KA-4008ZGS-G: | Parameter | Specification | | :--- | :--- | | **Emitting Color** | Green | | **Material** | InGaN (Indium Gallium Nitride) | | **Lens Type** | Water Clear | | **Luminous Intensity** | 500 mcd (Typical) @ 20mA | | **Viewing Angle** | 120° | | **Forward Voltage ($V_F$)** | 3.3V (Typical) / 4.1V (Max) | | **Wavelength** | 525 nm (Dominant) | | **Package Style** | Right Angle SMD | --- ### 2. Physical Dimensions and Design The KA-4008 series is characterized by its rectangular, low-profile shape, which allows it to emit light parallel to the PCB surface. * **Size:** 4.0mm x 0.8mm (Height is 1.4mm). * **Mounting:** It is designed for surface mount technology (SMT) and is compatible with automatic placement equipment. * **Moisture Sensitivity:** It typically has a Moisture Sensitivity Level (MSL) of 3, requiring proper storage to prevent damage during reflow soldering. --- ### 3. Electronic Features * **High Efficiency:** Uses InGaN technology, which provides high brightness even at lower currents. * **Low Power Consumption:** Operates efficiently at a standard 20mA current. * **Electrostatic Discharge (ESD) Sensitivity:** Since it is an InGaN-based device, it is sensitive to static electricity. It is usually rated for up to 450V ESD protection, so anti-static wrist straps should be used during handling. * **RoHS Compliant:** The part is lead-free and meets environmental safety standards. --- ### 4. Common Applications Due to its "side-fire" orientation, this LED is commonly used in: 1. **Backlighting:** For LCD displays and membrane switches where space is limited. 2. **Status Indicators:** Side-mounted power or connectivity lights on thin consumer electronics (laptops, smartphones). 3. **Edge Lighting:** Used to illuminate light pipes or acrylic panels.