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CS218I-50PB
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Product Detailed Parameters
- Description：SCR 1.2KV 50A TO218
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Voltage - Off State：1.2 kV
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：80 mA
- Current - Hold (Ih) (Max)：80 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：500A @ 100Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-218-3
- Supplier Device Package：TO-218
- Voltage - On State (Vtm) (Max)：1.9 V
- Current - On State (It (AV)) (Max)：-
- Current - On State (It (RMS)) (Max)：50 A
- Current - Off State (Max)：20 µA
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Overview
The Central Semiconductor CS218I-50PB is a Silicon Controlled Rectifier (SCR) housed in an isolated tab TO-218 package. It features a peak repetitive off-state voltage of 1200 V and supports a maximum RMS on-state current of 50 A at 75°C case temperature. The device handles a one-cycle surge current of 500 A with an I²t value of 1250 A²s for fusing. Key electrical characteristics include a gate trigger current of 80 mA, a holding current of 80 mA, and a critical rate of rise of on-state current (di/dt) of 100 A/μs. Thermal resistance from junction to case is 0.9 °C/W, while the isolation voltage between the tab and leads is rated at 2500 V RMS.
Feature Summary
- Isolated mounting tab design for secure electrical insulation
- High surge current capability for robust circuit protection
- Suitable for sensing circuits and control systems
Applications
- Sensing circuit applications
- Control system applications
Procurement Notes
Verify component authenticity through official manufacturer channels or authorized distributors. Confirm that the specific ordering suffix matches the required voltage rating and plating options. Check for any product discontinuation notices or end-of-life status updates prior to finalizing procurement plans.
Selection Notes
Select this component based on the 1200 V blocking voltage requirement and 50 A continuous current capacity. Ensure the application environment allows for adequate heat sinking to maintain the case temperature within specified limits. Verify that the gate drive circuit can supply the necessary trigger current and voltage levels.
Part Context
This part belongs to the CS218I-50 series of isolated tab SCRs, which are epoxy molded devices designed for high-voltage switching. The series covers voltage ratings from 200 V to 1200 V, with the PB variant specifically designated for the 1200 V class. These components are intended for industrial and commercial power control environments.
Replacement Considerations
Official documentation indicates that all devices manufactured in the TO-218 package are discontinued and classified as End of Life. No direct replacement part numbers are listed for the CS218I-50PB in the provided datasheet; contact [email protected] for alternate source assistance.
