The **SSR-90-R-R11-HJ100** is a high-performance, high-output LED module manufactured by **Luminus Devices**. It belongs to the Specialty LED series, specifically designed for applications requiring high lumen density and reliability. --- ### 1. Technical Specifications The part number can be broken down into specific electronic characteristics: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Series** | SSR-90 | Star board mounted SST-90 LED | | **Color** | Red (R) | Monochromatic Red spectrum | | **Wavelength** | 620nm - 630nm | Peak dominant wavelength | | **Max Current** | 9.0 A | High current drive capability | | **Forward Voltage** | 2.0V - 2.5V | Typical voltage at rated current | | **Power Consumption** | ~20W+ | Depends on drive current and cooling | | **Mounting Type** | Star PCB | Aluminum metal-core PCB for heat dissipation | --- ### 2. Key Electronic Components & Features #### A. The LED Die (SST-90) The heart of this module is a single, large-area monolithic chip (9 $mm^2$). Unlike multi-die LEDs, this provides a single point source, which is electronically simpler to calibrate and optically easier to focus using reflectors or lenses. #### B. The Star PCB (SSR Designation) The "SSR" prefix indicates that the LED is pre-soldered onto a **Metal Core Printed Circuit Board (MCPCB)**. - **Thermal Management:** The board is designed to pull heat away from the junction quickly. - **Electrical Pads:** Large solder pads are provided for easy wire attachment, capable of handling the high 9A current. #### C. Binning Code (R11-HJ100) - **R11:** Refers to the specific wavelength range (Color Bin). - **HJ100:** Refers to the Flux (Brightness) bin. "HJ" represents a specific lumen output range at the test current. --- ### 3. Application Circuit Requirements To operate this part safely, the following electronic considerations are mandatory: 1. **Constant Current Driver:** Because LEDs are current-driven devices, you must use a driver capable of delivering up to 9A. A standard voltage-regulated power supply will likely burn out the component. 2. **Heat Sinking:** Despite the Star PCB, an external active or large passive heatsink is required. At 9A, the thermal energy generated is significant. 3. **Pulse Width Modulation (PWM):** The SSR-90 is compatible with PWM dimming for precise brightness control without shifting the wavelength significantly. --- ### 4. Typical Use Cases * **Medical Equipment:** High-intensity red light for therapeutic or diagnostic tools. * **Emergency Vehicle Lighting:** High-visibility beacons. * **Architectural Lighting:** High-power wall washing and spotlighting. * **Fiber Optic Illumination:** Coupling high-density light into large fiber bundles.