The **ST1230C..K** series belongs to the Phase Control Thyristor (SCR) family, specifically designed for high-power industrial applications. These components are manufactured by companies like Vishay (formerly International Rectifier) and are characterized by their "Hockey PUK" (press-pack) design. --- ### 1. General Specifications The ST1230C..K is a high-current, high-voltage device. The ".." in the part number usually represents the voltage rating (e.g., 12 means 1200V). | Parameter | Typical Value | Unit | | :--- | :--- | :--- | | **$I_{T(AV)}$** (Average On-state Current) | 1230 | A | | **$V_{DRM} / V_{RRM}$** (Peak Voltage Range) | 800 to 1600 | V | | **$I_{TSM}$** (Max Peak Surge Current) | ~24,000 | A | | **$V_{TM}$** (Max On-state Voltage) | ~1.69 | V | | **Package Type** | K-PUK (A-24) | - | --- ### 2. Key Electronic Features * **High Surge Capability:** Designed to handle massive current spikes, making it ideal for heavy industrial loads. * **Low Thermal Resistance:** Due to the press-pack design, heat is dissipated efficiently from both sides (double-side cooling). * **Phase Control:** Optimized for line-frequency applications where the turn-on time is controlled relative to the AC phase. * **Gate Triggering:** Requires a specific gate current ($I_{GT}$) to move from a blocking state to a conducting state. --- ### 3. Physical & Mechanical Design The **"K"** in the suffix refers to the specific package size/profile (K-PUK). * **Hermetic Seal:** The ceramic housing provides excellent protection against environmental factors. * **Pressure Contact:** Unlike soldered components, these rely on external clamping force (pressure) to ensure electrical and thermal contact. * **Mounting:** Must be mounted using a specific clamp (heatsink) with calibrated pressure to function correctly. --- ### 4. Common Applications 1. **Industrial DC Drives:** Controlling the speed of large motors. 2. **AC Soft Starters:** Reducing inrush current in heavy machinery. 3. **Large Battery Chargers:** High-current rectification. 4. **Welding Equipment:** Precision control of high-current output. 5. **HVDC Transmission:** Used in power grid conversion stations. --- ### 5. Part Number Breakdown Example: **ST1230C16K0** * **ST:** Thyristor series. * **1230:** Average current ($I_{T(AV)}$) in Amperes. * **C:** Ceramic PUK package. * **16:** Voltage rating ($16 \times 100 = 1600V$). * **K:** Case style (K-PUK). * **0:** Gate lead/terminal type.