The **48NDR-2R3-R** is a specific part number belonging to a series of high-performance **DC-DC Converters**, typically manufactured by companies like **Bel Power Solutions** (formerly Power-One). These components are designed to convert a source of direct current (DC) from one voltage level to another, providing isolation and regulation for sensitive electronic systems. --- ### Technical Specifications Below are the typical specifications associated with this series: | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 36V to 72V DC (Nominal 48V) | | **Output Voltage** | 3.3V DC (Dual or Single depending on configuration) | | **Output Current** | ~2 to 3 Amps (Varies by load conditions) | | **Isolation** | 1500V DC (Input to Output) | | **Mounting Type** | Through-Hole (THT) | | **Package/Case** | DIP (Dual In-line Package) or Module | | **Efficiency** | Typically 80% - 88% | --- ### Breakdown of the Part Number While manufacturers vary slightly, the nomenclature generally follows this logic: 1. **48**: Represents the nominal **Input Voltage** (48V DC, standard for telecom). 2. **N**: Usually indicates a specific series or mechanical configuration (Narrow/Standard). 3. **D/S**: Indicates **Dual** or **Single** output. 4. **2R3**: Specifies the **Output Voltage**. In this context, "2R3" often signifies **2.3V or 3.3V** regulation logic. 5. **R**: Generally stands for **RoHS Compliant** (lead-free). --- ### Key Features * **Wide Input Range:** Capable of handling fluctuations in battery or power supply lines (standard 2:1 or 4:1 ratios). * **Galvanic Isolation:** Protects the load from input-side surges and noise. * **Protection Circuits:** Usually includes Over-Voltage Protection (OVP), Short-Circuit Protection (SCP), and Thermal Shutdown. * **Compact Footprint:** Designed for PCB mounting where space is a premium. ### Common Applications * **Telecommunications:** Powering logic boards from standard 48V racks. * **Industrial Controls:** Providing stable low voltage to microprocessors and sensors. * **Networking Gear:** Used in routers and switches for internal power distribution.