The **RTS-2405-R** is a high-performance, miniature DC/DC converter manufactured by **RECOM Power**. It is part of the RTS series, specifically designed for board-level power isolation and voltage regulation in industrial and electronic applications. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 24V DC (Nominal) | | **Output Voltage** | 5V DC | | **Output Current** | 400mA | | **Power Rating** | 2 Watts | | **Isolation Voltage** | 1kV DC (Standard) | | **Efficiency** | 80% to 84% (Typical) | | **Package Type** | SIP8 (Single In-line Package) | --- ### 2. Functional Electronic Parts & Design The RTS-2405-R is a complex module condensed into a small form factor. Internally, it consists of several critical stages: #### A. Input Filtering The input stage typically contains a small decoupling capacitor to reduce ripple current and protect the internal switching circuit from voltage spikes on the 24V rail. #### B. Switching Controller (Oscillator) This is the "heart" of the device. It converts the stable 24V DC input into a high-frequency alternating signal (AC). High-frequency switching allows for the use of a very small transformer, which is why the unit remains compact. #### C. Isolation Transformer The transformer provides **Galvanic Isolation**. This means there is no direct electrical path between the 24V input and the 5V output. This protects sensitive downstream components from noise or faults on the primary power bus. #### D. Rectification & Regulation The AC signal from the transformer is passed through Schottky diodes (for rectification) and an LC filter (inductor and capacitor) to smooth the signal back into a clean 5V DC output. --- ### 3. Physical Features & Pinout The **"R" suffix** in the part number usually denotes the specific reel packaging or a reinforced internal design depending on the specific sub-series revision. * **Case Material:** Non-conductive black plastic (UL94V-0 rated). * **Potting:** The internal components are encapsulated in epoxy to provide vibration resistance and thermal dissipation. * **Footprint:** It uses a standard SIP8 layout, saving significant PCB real estate compared to discrete converter designs. --- ### 4. Common Applications * **Industrial Control:** Providing isolated power to logic gates or microcontrollers from a 24V industrial bus. * **Sensor Interfaces:** Powering 5V sensors while keeping the sensor ground isolated from the noisy motor/actuator ground. * **Data Communication:** Powering isolated RS-485 or CAN bus transceivers. ---