The **RSS-3.305/P-R** is a high-performance, subminiature DC/DC converter manufactured by **RECOM Power**. It belongs to the Econoline series and is specifically designed for applications requiring high power density and isolation in a very small footprint. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the RSS-3.305/P-R: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 3.3V DC (Nominal) | | **Output Voltage** | 5V DC | | **Output Current** | 200mA (Max) | | **Power Rating** | 1 Watt | | **Isolation Voltage** | 1kV DC (standard) | | **Efficiency** | 70% - 75% (Typical) | | **Package Type** | SMD (Surface Mount Device) | | **Operating Temperature** | -40°C to +85°C (without derating) | --- ### 2. Breakdown of the Model Name Understanding the nomenclature helps identify the specific features of this component: * **RSS**: Single Output SMD Short-style package. * **3.3**: Nominal Input Voltage (3.3V). * **05**: Nominal Output Voltage (5V). * **/P**: Short Circuit Protection (Continuous). * **-R**: Tape & Reel packaging (for automated assembly). --- ### 3. Core Features and Functionality #### A. Power Conversion & Regulation This part functions as a **Step-Up (Boost) converter**. It takes a 3.3V rail (common in modern microcontrollers/FPGAs) and boosts it to a stable 5V rail to power legacy sensors, communication interfaces, or displays. #### B. Galvanic Isolation The "1kV DC Isolation" means the input and output stages are electrically separated. This is crucial for: * **Noise Reduction:** Breaking ground loops in sensitive analog circuits. * **Protection:** Shielding the low-voltage logic side from surges on the output side. #### C. Protections The **/P** suffix indicates **Continuous Short Circuit Protection**. Unlike basic converters that might overheat and fail during a fault, this unit can withstand a short circuit on the output indefinitely without destroying the internal circuitry. --- ### 4. Typical Applications * **Industrial Control:** Providing isolated power for RS-485 or CAN bus transceivers. * **Sensor Interfaces:** Powering 5V analog sensors from a 3.3V digital board. * **Battery Powered Systems:** Efficiently boosting voltage from single-cell lithium or low-voltage rails. * **IoT Devices:** Where PCB space is at a premium and high power density is required. --- ### 5. Physical Layout (SMD) The "R" suffix indicates it is supplied on **Tape and Reel**, designed for Pick-and-Place machines. The SMD footprint is significantly smaller than traditional DIP packages, allowing for "bottom-side" mounting on PCBs to save space.