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Product Detailed Parameters
- Description：SCR 400V 110A TO94
- Series：-
- Mfr：Powerex Inc.
- Package：Bulk
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：3 V
- Current - Gate Trigger (Igt) (Max)：70 mA
- Current - Hold (Ih) (Max)：-
- Current - Non Rep. Surge 50, 60Hz (Itsm)：1000A @ 60Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Chassis, Stud Mount
- Package / Case：TO-209AC, TO-94-4, Stud
- Supplier Device Package：-
- Voltage - On State (Vtm) (Max)：2.3 V
- Current - On State (It (AV)) (Max)：70 A
- Current - On State (It (RMS)) (Max)：110 A
- Current - Off State (Max)：12 mA
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Overview
The Powerex Inc. 2N1798 is a phase control Silicon Controlled Rectifier (SCR) designed for high-power industrial applications. It features a single element structure housed in a TO-209AC (TO-94) package. The device supports a peak repetitive off-state voltage of 400V and an on-state RMS current of 70A, with a non-repetitive surge current rating of 110A. Key electrical parameters include a maximum gate trigger current of 70mA. This component is suitable for AC power conversion, motor speed regulation, and lighting control systems requiring robust thyristor performance.
Feature Summary
- Single-element silicon controlled rectifier configuration
- Phase control capability for AC power management
- Robust thermal and electrical handling in TO-209AC package
Applications
- AC power conversion systems
- Industrial motor speed regulation
- Lighting control circuits
Procurement Notes
Verify the specific manufacturer source, as the 2N1798 part number appears across multiple vendors including Microsemi and Powerex. Confirm that the received component matches the required 400V/70A specifications and TO-209AC package type. Ensure RoHS compliance status aligns with project requirements. Cross-reference datasheets from the actual supplier to confirm gate trigger current and voltage ratings before integration into critical power circuits.
Selection Notes
Select this component when a 400V rated SCR with 70A continuous current capacity is required for phase control applications. The TO-209AC package offers a standard mounting solution for industrial boards. Consider the 70mA gate trigger requirement for driver circuit design. Evaluate thermal management needs based on the 110A surge rating for transient load conditions. Ensure the application voltage does not exceed the repetitive off-state limit.
Part Context
The 2N1798 belongs to a family of general-purpose silicon controlled rectifiers used in power electronics. It serves as a fundamental switching element in AC power controllers. Similar devices in this category often share the TO-209AC form factor but vary in voltage and current ratings. It is distinct from higher-voltage industrial SCRs or low-current signal devices.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing driver circuits if substituting with other 400V/70A SCRs from different manufacturers.
