BT151-1000RT,127

Scrs Overview

The BT151-1000RT,127 is a planar passivated Silicon Controlled Rectifier (SCR) manufactured by WeEn Semiconductors. It is housed in a SOT78 (TO-220AB) plastic package designed for high bidirectional blocking voltage capability, high junction temperature operation, and robust thermal cycling performance. Key electrical parameters include a repetitive peak off-state voltage of 1000 V, an average on-state current of 7.5 A, and an RMS on-state current of 12 A. The device supports a non-repetitive peak on-state current of 120 A, features a maximum gate trigger current of 15 mA, and withstands a dV/dt rating of 300 V/µs. The maximum operating junction temperature is rated at 150 °C.

Scrs Feature Summary

• Planar passivated silicon construction for enhanced reliability
• High bidirectional blocking voltage capability up to 1000 V
• High junction temperature capability reaching 150 °C
• Robust thermal cycling performance suitable for demanding environments

Scrs Applications

• Motor control systems
• Static switching applications
• Ignition circuits
• Protection circuits

Scrs Procurement Notes

Verify the specific manufacturer designation, as this component type is produced by both NXP Semiconductors and WeEn Semiconductors following corporate restructuring. Confirm that the orderable part number matches the required suffix exactly to ensure correct packaging and origin. Cross-reference the datasheet revision date to confirm compliance with current industrial qualification standards and RoHS requirements before finalizing procurement.

Scrs Selection Notes

Select this component when circuit designs require high voltage blocking capabilities combined with moderate current handling in a through-hole package. The 1000 V rating distinguishes it from lower-voltage variants within the same series. Ensure the application environment supports the specified 150 °C junction temperature limit and that the thermal management system can handle the associated power dissipation during continuous conduction.

Scrs Part Context

This SCR belongs to the BT151 series, which provides standardized solutions for phase control and power switching. The TO-220AB package facilitates efficient heat dissipation compared to smaller surface-mount alternatives. The product is classified under industrial qualification standards, indicating suitability for general-purpose power electronics where long-term stability and high surge current tolerance are critical design factors.

Scrs Replacement Considerations

Direct substitutes include the BT151-1000R,127 and BT151-1000RT variants from the same manufacturer family. Other compatible options may include equivalent 1000 V, 12 A SCRs from different manufacturers, provided pinout compatibility and thermal characteristics align with the existing board layout and cooling infrastructure.

Scrs FAQ

What is the maximum repetitive peak off-state voltage for this device?

The maximum repetitive peak off-state voltage (VDRM/VRRM) is 1000 V.

Is this component suitable for high-temperature environments?

Yes, the device is capable of operating at a maximum junction temperature (Tj) of 150 °C.

What is the package type used for this SCR?

It is supplied in a SOT78 plastic package, which corresponds to the TO-220AB form factor.