BT258X-500R,127

Scrs Overview

The BT258X-500R,127 is a planar passivated Silicon Controlled Rectifier (SCR) manufactured by WeEn Semiconductors. It is housed in a TO-220F (SOT-186A) plastic package designed for high thermal cycling performance. The device features a sensitive gate configuration allowing direct interfacing with microcontrollers and logic integrated circuits. Key electrical parameters include a repetitive peak reverse voltage of 500 V, an average on-state current of 5 A, and an RMS on-state current of 8 A. The maximum non-repetitive surge current is 75 A, with a holding current maximum of 6 mA.

Scrs Feature Summary

• Sensitive gate design enables direct interface with low power gate trigger circuits such as microcontrollers and logic ICs.
• Planar passivation technology ensures good bidirectional blocking voltage capability and robustness.
• TO-220F full pack plastic package provides high thermal cycling performance suitable for industrial environments.

Scrs Applications

• Embedded electronics systems
• Industrial equipment control
• Maintenance applications requiring reliable switching

Scrs Procurement Notes

Verify the specific ordering suffix

Scrs Selection Notes

Select this component when a sensitive gate SCR is required for direct logic interfacing without additional driver circuitry. The TO-220F package is appropriate for applications needing efficient heat dissipation and mechanical stability. Ensure the 500V rating aligns with the system's peak voltage requirements and that the 8A RMS current capacity meets the load demands.

Scrs Part Context

This part belongs to the BT258 series of rail SCRs from WeEn Semiconductors. These devices are engineered for general-purpose thyristor applications where reliable triggering and high voltage blocking are necessary. The series utilizes planar passivation to enhance durability and electrical performance compared to older technologies.

Scrs Replacement Considerations

Cross-reference with other BT258 variants or equivalent 500V/8A SCRs in TO-220 packages. Verify pinout compatibility and gate sensitivity specifications before substitution.