The **STPS3045CWC** is a high-performance Power Schottky Rectifier designed for high-frequency switch-mode power supplies and DC-to-DC converters. It is manufactured by STMicroelectronics. --- ## 1. Technical Specifications The device features a dual-diode configuration (Common Cathode) in a single package. | Parameter | Specification | | :--- | :--- | | **Part Number** | STPS3045CWC | | **Configuration** | Dual Center Tap (Common Cathode) | | **Repetitive Peak Reverse Voltage ($V_{RRM}$)** | 45 V | | **Average Forward Current ($I_{F(AV)}$)** | 30 A (15 A per diode) | | **Forward Voltage Drop ($V_F$)** | 0.57 V (typical at 15 A) | | **Operating Junction Temperature ($T_j$)** | -65°C to +175°C | | **Package Type** | TO-247 | --- ## 2. Key Features * **Low Forward Voltage Drop:** This reduces power dissipation and improves overall system efficiency. * **High Frequency Operation:** The Schottky technology allows for very fast switching with negligible reverse recovery time. * **Avalanche Capability:** It is rated to withstand a specific amount of energy in reverse breakdown, providing a safety margin against voltage spikes. * **Thermal Performance:** The TO-247 package offers excellent heat dissipation when mounted to a heatsink. --- ## 3. Internal Schematic and Pinout The STPS3045CWC uses a **Common Cathode** arrangement. ```text [ Pin 1 ] ----|>|---- [ Pin 2 ] (Anode 1) (Cathode) | [ Pin 3 ] ----|>|---------/ (Anode 2) ``` 1. **Pin 1 (Anode 1):** Input for the first diode. 2. **Pin 2 (Cathode):** Common output for both diodes (connected to the metal tab). 3. **Pin 3 (Anode 2):** Input for the second diode. --- ## 4. Typical Applications * **Switch Mode Power Supplies (SMPS):** Used for rectification on the secondary side of transformers. * **DC/DC Converters:** Acts as a freewheeling diode or polarity protection. * **Free Wheeling:** Used in motor control circuits to protect against inductive kickback. * **OR-ing Diodes:** Used in redundant power supply systems to combine multiple power rails.