### Overview of HLMP-EJ30-R2000 The **HLMP-EJ30-R2000** is a high-intensity, precision optical performance LED lamp manufactured by Broadcom (formerly Avago Technologies). It is part of the T-1¾ (5mm) AllnGaP (Aluminum Indium Gallium Phosphide) LED family, designed for high-brightness applications where reliability and visibility are critical. --- ### Technical Specifications The following table outlines the primary electrical and optical characteristics of the component: | Parameter | Specification | Units | | :--- | :--- | :--- | | **Color** | Orange | - | | **Dominant Wavelength** | 605 nm | nm | | **Luminous Intensity** | 500 - 1150 (Typ @ 20mA) | mcd | | **Viewing Angle** | 30° | Degrees | | **Forward Current ($I_F$)** | 20 (Nominal) / 50 (Max) | mA | | **Forward Voltage ($V_F$)** | 1.9 (Typ) / 2.4 (Max) | V | | **Reverse Voltage ($V_R$)** | 5 | V | | **Operating Temperature** | -40 to +100 | °C | | **Package Size** | T-1¾ (5mm) | - | --- ### Key Electronic Features 1. **Material Technology (AllnGaP):** The use of AllnGaP (Aluminum Indium Gallium Phosphide) on a GaAs substrate allows for extremely high luminous efficiency and stable performance across a wide temperature range compared to older LED technologies. 2. **Radiation Pattern:** The part features a **30-degree viewing angle**, which is considered a "medium-narrow" beam. This makes it ideal for applications requiring focused light rather than wide-area illumination. 3. **High Reliability:** It is designed to handle high current pulses and maintain consistent light output over a long lifespan, often exceeding 100,000 hours under standard operating conditions. 4. **Tinted/Non-Diffused Lens:** The "EJ" series typically features a tinted, non-diffused lens, which enhances the color of the LED even when it is turned off and ensures a clear, bright point of light when energized. --- ### Application Usage * **Traffic Signaling:** Pedestrian crossings and warning lights. * **Variable Message Signs:** Outdoor displays and billboards due to high sunlight visibility. * **Commercial/Industrial:** Status indicators on control panels that require high visibility from a distance. * **Automotive:** Exterior lighting and dashboard indicators. --- ### Typical Circuit Design To drive this LED at a standard **20mA** using a **5V** supply, you would use a current-limiting resistor calculated as follows: ```text R = (V_source - V_forward) / I_forward R = (5V - 1.9V) / 0.02A R = 155 Ohms (Use 160 or 180 Ohm standard resistor) ```