## Overview of the 5STP 200-R The **5STP 200-R** is a high-power industrial semiconductor device, specifically a **Phase Control Thyristor (SCR)** manufactured by companies like ABB (now Hitachi Energy). It is designed for high-current and high-voltage applications, typically used in power conversion and industrial control systems. --- ### Key Technical Specifications The following table summarizes the primary electrical characteristics of the 5STP 200-R: | Parameter | Symbol | Typical Value | | :--- | :--- | :--- | | **Repetitive Peak Off-State Voltage** | $V_{DRM}$ | Up to 2000V - 2200V | | **Average On-State Current** | $I_{T(AV)}$ | ~200A - 250A (depending on cooling) | | **RMS On-State Current** | $I_{T(RMS)}$ | ~400A | | **Max Junction Temperature** | $T_{j}$ | 125°C | | **Package Type** | - | Press-pack (Hockey Puk) | | **Triggering Current** | $I_{GT}$ | ~150mA - 200mA | --- ### Core Functional Features 1. **Phase Control:** This device is optimized for line frequency (50/60Hz) applications. It allows for precise control of power by adjusting the firing angle of the gate. 2. **Double-Side Cooling:** Designed as a "hockey puk" package, it allows heat to be dissipated from both the top and bottom surfaces when clamped between heatsinks, maximizing current capacity. 3. **High Surge Current Capability:** It is built to withstand significant momentary current surges, which is critical for motor starting and fault protection. 4. **Low On-State Voltage:** Minimizes power losses during conduction, improving overall system efficiency. --- ### Typical Applications The 5STP 200-R is commonly integrated into the following systems: * **AC/DC Drives:** Controlling the speed of large industrial motors. * **Controlled Rectifiers:** Converting AC to DC for electrochemical processes or battery charging. * **Soft Starters:** Reducing the mechanical stress on motors during startup. * **HVDC Transmission:** Used in high-voltage DC power grids. * **Static Var Compensators (SVC):** Used for reactive power compensation in electrical grids. --- ### Mounting and Handling Requirements Because this is a **Press-pack** device, correct installation is vital: * **Clamping Force:** The device must be held under a specific mechanical pressure (measured in kilo-Newtons, kN) to ensure proper electrical and thermal contact. * **Surface Finishes:** The heatsink surfaces must be flat and clean. Thermal grease or a conductive compound is usually applied in a very thin layer. * **Gate Connections:** Fast-on or soldered leads are used for the gate and cathode sense terminals.