BT169H-LML

Scrs Overview

The WeEn Semiconductors BT169H-LML is a planar passivated sensitive gate Silicon Controlled Rectifier (SCR) housed in a SOT54 (TO-92) plastic package. It is designed as a logic-level, high-voltage thyristor offering ruggedness and reliability through its passivation process. The component functions as a bidirectional triode thyristor suitable for applications requiring low gate trigger currents and high voltage blocking capabilities.

Scrs Feature Summary

• Planar passivated construction ensures voltage ruggedness and long-term reliability
• Sensitive gate design enables operation with low control power levels
• Logic-level compatibility allows direct interfacing with standard digital logic circuits

Scrs Applications

• Earth leakage circuit breakers or Ground Fault Circuit Interrupters (GFCI)
• Ignition circuits
• Low power latching circuits
• Protection circuits and shut-down mechanisms for lighting ballasts
• Protection circuits for Switched Mode Power Supplies

Scrs Procurement Notes

Verify the specific suffix 'LML' against official WeSem datasheets to confirm marking and packaging variations. Ensure the selected variant matches the required SOT54 package and sensitive gate specifications for your circuit design.

Scrs Selection Notes

Select this component when a high-voltage SCR with sensitive gate characteristics is required in a TO-92 package. It is appropriate for designs needing logic-level triggering without additional amplification stages.

Scrs Part Context

This part belongs to the BT169 series of logic-level SCRs originally defined by NXP Semiconductors. WeEn Semiconductors manufactures this component as a compatible alternative, maintaining the functional specifications of the original planar passivated sensitive gate SCR design.

Scrs Replacement Considerations

Compatible substitutes include the NXP BT169H and BT169D-L. Other manufacturers offer equivalents such as the Unisonic Technologies BT169H-T92-B. Verify pinout and electrical parameters before substitution.