The part number **51U-2C0-R3** refers to a specific configuration of a high-performance **Mini-ITX / Micro-ATX Industrial Power Supply** (typically a 1U form factor or open-frame module) often used in networking, telecommunications, and industrial computing. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications This component is designed for high-density environments where space is limited but power reliability is critical. | Parameter | Specification | | :--- | :--- | | **Form Factor** | 1U / U-Chassis (Small Form Factor) | | **Output Power** | Typically 200W - 300W (Configuration dependent) | | **Input Voltage** | 90V ~ 264V AC (Universal Input) | | **Efficiency** | 80 PLUS® Bronze/Silver equivalent (Typically >82%) | | **Cooling** | Active cooling (40mm internal fan) | --- ### 2. Output Rail Distribution The "2C0" designation often indicates the specific rail configuration for industrial logic boards. * **+3.3V Rail:** Powers logic circuits, CPU I/O, and memory. * **+5V Rail:** Used for USB peripherals, SSDs, and legacy logic. * **+12V Rail:** The primary rail for CPU VRMs and cooling fans. * **-12V & +5Vsb:** Essential for standby modes and legacy PCI communication. --- ### 3. Key Electronic Protections To ensure industrial-grade reliability, the unit integrates several protection circuits: 1. **OVP (Over Voltage Protection):** Shuts down the unit if the output voltage exceeds a safe threshold (e.g., +5V rail hitting 6.5V). 2. **OCP (Over Current Protection):** Prevents damage if a component on the motherboard shorts out and draws excessive current. 3. **SCP (Short Circuit Protection):** Immediate latch-off if a direct short is detected. 4. **MTBF (Mean Time Between Failures):** Usually rated for >100,000 hours at 25°C. --- ### 4. Typical Connector Pinout While variations exist based on the "R3" revision, the standard wiring harness includes: ```markdown - 1x 20+4 Pin ATX Main Connector - 1x 4-Pin 12V CPU Connector - 2x SATA Power Connectors - 2x Large 4-Pin Molex (Peripheral) - 1x Small 4-Pin Floppy (Optional) ``` --- ### 5. Application Areas * **1U Rackmount Servers:** Due to the slim profile. * **Digital Signage:** Powering media players inside thin enclosures. * **Industrial Automation:** Powering PLC controllers and Human-Machine Interfaces (HMI). * **Network Appliances:** Firewalls, routers, and VPN gateways. ---