The **VS-9.MT...KPBF** series refers to a specific line of **Three-Phase Bridge Rectifiers** manufactured by Vishay (formerly International Rectifier). These components are designed to convert alternating current (AC) into direct current (DC) in industrial power supplies and motor control applications. --- ### 1. Technical Specifications The "MT" series is known for its "MTK" power module housing, which is robust and electrically isolated. | Parameter | Standard Value Range | |:---|:---| | **Maximum Output Current ($I_D$)** | 90A to 100A (depending on subtype) | | **Voltage Range ($V_{RRM}$)** | 800V to 1600V | | **Circuit Configuration** | Three-Phase Bridge (6 Diodes) | | **Package Type** | MTK (Power Module) | | **Isolation Voltage** | 2500 V(RMS) | | **Mounting** | Screw Mount (Chassis) | --- ### 2. Part Number Breakdown The nomenclature follows a specific logic to identify the part's capabilities: * **VS-**: Vishay Semiconductors prefix. * **9**: Indicates the approximate current class (in this case, part of the 90A-100A series). * **MT**: Refers to the physical package style (MTK Module). * **...**: This placeholder represents the voltage rating (e.g., `80`, `120`, `160` for 800V, 1200V, or 1600V). * **K**: Indicates the internal configuration (Three-phase bridge). * **PBF**: Lead-Free (RoHS Compliant). --- ### 3. Key Electronic Features * **Direct Mounting:** The baseplate is electrically isolated from the terminals, meaning it can be bolted directly to a metal heatsink without additional insulation pads. * **High Surge Current:** Designed to handle high initial inrush currents common in industrial motor starts. * **Low Thermal Resistance:** Uses a large copper baseplate to efficiently transfer heat away from the diode junctions. * **Solderable Terminals:** The terminals are designed for easy connection via lugs or direct soldering. --- ### 4. Typical Applications These modules are workhorses in high-power environments: 1. **Variable Speed Drives (VSD):** Converting 3-phase AC mains to DC for the inverter stage. 2. **Battery Chargers:** High-capacity industrial charging stations. 3. **Welding Equipment:** Providing steady DC current for arc welding. 4. **DC Power Supplies:** Regulated power for factory automation. ---