The **JRQ2-75W-R** is an industrial-grade **DC-DC Converter** module, typically designed for railway and high-reliability applications. It is engineered to provide a stable, regulated output from a fluctuating DC input source. ### 1. Key Technical Specifications The following table highlights the primary electrical characteristics of the JRQ2-75W-R series: | Parameter | Specification | | :--- | :--- | | **Output Power** | 75 Watts (Max) | | **Input Voltage Range** | Typically Wide (e.g., 43-160V for 110V systems) | | **Efficiency** | Up to 88% - 92% | | **Isolation Voltage** | 3000V AC (Input to Output) | | **Package Style** | Quarter-Brick (Standard Industrial Footprint) | | **Operating Temperature** | -40°C to +105°C (Case Temperature) | --- ### 2. Core Features The "JRQ" series is characterized by its robust design suited for harsh environments. * **Standard Quarter-Brick Footprint:** It follows industry-standard dimensions, allowing it to be integrated into existing PCB layouts for power modules. * **Protection Mechanisms:** * **OCP (Over-Current Protection):** Protects the device from short circuits or excessive loads. * **OVP (Over-Voltage Protection):** Clamps the output voltage to prevent damage to downstream components. * **OTP (Over-Temperature Protection):** Safely shuts down the module if it exceeds thermal limits. * **Remote On/Off:** Features a control pin to enable or disable the converter remotely. * **Voltage Trim:** Allows the user to adjust the output voltage slightly (usually ±10%) using an external resistor. --- ### 3. Typical Pin Configuration Most modules in this category use the following standard pinout: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | +Vin | Positive Input Voltage | | 2 | Remote On/Off | Logic control to turn module on/off | | 3 | -Vin | Negative Input Voltage | | 4 | -Vout | Negative Output Voltage | | 5 | -Sense | Negative remote sense (for voltage drop compensation) | | 6 | Trim | Output voltage adjustment pin | | 7 | +Sense | Positive remote sense | | 8 | +Vout | Positive Output Voltage | --- ### 4. Applications Due to its compliance with railway standards (such as **EN50155**), this part is commonly used in: 1. **Railway Rolling Stock:** Powering communication, lighting, and control systems. 2. **Industrial Automation:** Distributed power architectures. 3. **Telecommunications:** Base station power modules. 4. **Battery Powered Systems:** Where input voltage fluctuates significantly.