GA10JT12-247

Overview

The GA10JT12-247 is a normally-off Silicon Carbide Junction Transistor (SJT) manufactured by GeneSiC Semiconductor. It features a TO-247 package with a drain-source voltage of 1200 V and a continuous drain current of 25 A at 25°C case temperature, reducing to 10 A at 155°C. The device exhibits an on-resistance ranging from 100 mΩ at 25°C to 180 mΩ at 175°C. Maximum power dissipation is 170 W at 25°C and 22 W at 155°C. Thermal resistance from junction to case is 0.88 °C/W, supporting operation up to 175°C.

Feature Summary

• Gate oxide-free SiC switch design providing exceptional safe operating area and positive temperature coefficient of on-resistance.
• Temperature-independent switching performance with low output capacitance and excellent gain linearity.
• Compatible with standard Si MOSFET and IGBT gate drive ICs for simplified integration.

Applications

• Down hole oil drilling and geothermal instrumentation
• Hybrid electric vehicles (HEV)
• Solar inverters and switched-mode power supplies (SMPS)
• Power factor correction (PFC) and induction heating
• Uninterruptible power supplies (UPS) and motor drives

Procurement Notes

Verify the specific revision status of the datasheet prior to procurement, as electrical characteristics were updated in January 2015 compared to the initial release. Confirm that the required gate drive topology aligns with the steady-state current requirements specified for the target drain current conditions. Ensure thermal management solutions account for the derating curves provided for case temperatures exceeding 25°C.

Selection Notes

Select this component for high-efficiency applications requiring robust short-circuit withstand capability exceeding 20 µs. Consider the proportional gate drive topologies if operation over a wide range of drain currents is necessary to optimize gate drive power consumption. Evaluate the internal gate resistance values when designing high-speed drive circuits to ensure safe operation under peak load conditions.

Part Context

This device belongs to the GeneSiC commercial Silicon Carbide Junction Transistor family. It utilizes a vertical N-channel structure optimized for high-voltage switching. The technology eliminates the gate oxide layer found in traditional MOSFETs, resulting in superior ruggedness and linear gain characteristics suitable for demanding power electronics environments.

Replacement Considerations

No official substitute part numbers are documented in the manufacturer's datasheet. When evaluating alternatives, verify compatibility with existing gate drive circuitry, specifically regarding the unique current-driven nature of the SJT architecture. Ensure replacement devices support similar short-circuit withstand times and possess comparable thermal resistance specifications for direct board-level substitution.

FAQ

How does the gate drive requirement differ from standard MOSFETs?

The GA10JT12-247 is a current-controlled transistor requiring a continuous positive gate current to remain in the on-state, unlike voltage-controlled MOSFETs which only require charge during transitions.

What is the maximum short-circuit withstand time?

The device offers a short-circuit withstand capability greater than 20 µs under specified conditions of 175°C junction temperature and 800 V drain-source voltage.

Can this device be driven directly by TTL logic?

Yes, it can be driven using direct 5 V TTL logic after current amplification, provided the supply current meets or exceeds the steady-state gate current required for the anticipated drain current.