BT138Y-800E,127

Triacs Overview

The BT138Y-800E,127 is a four-quadrant logic level TRIAC manufactured by WeEn Semiconductors. It features an RMS on-state current of 12 A and a non-repetitive peak on-state current of 105 A. The device supports a rated repetitive off-state voltage (VDRM) of 800 V with a maximum off-state leakage current of 100 uA at VDRM. Key electrical parameters include an on-state voltage of 1.4 V, a maximum holding current of 30 mA, a gate trigger voltage of 700 mV, and a gate trigger current of 11 mA. It operates within a temperature range of -40 C to +125 C and utilizes a TO-220FP-3 through-hole package.

Triacs Feature Summary

• Four-quadrant sensitive gate triggering for direct interfacing with logic level ICs
• Logic level compatibility enabling direct drive from low power gate circuits
• Passivated construction providing robust performance in general purpose switching applications

Triacs Applications

• General purpose switching
• Phase control circuits
• 230 V lamp dimmers

Triacs Procurement Notes

Verify the specific suffix '127' against the manufacturer's official documentation to confirm the exact tape and reel packaging configuration. Confirm that the component matches the TO-220FP-3 insulated tab package style rather than standard TO-220AB variants. Cross-reference the part number with the latest product change notifications to ensure material compliance and manufacturing consistency.

Triacs Selection Notes

Select this component when a 12 A RMS current rating and 800 V blocking voltage are required for AC load control. The sensitive gate characteristic makes it suitable for designs utilizing low-power microcontrollers or logic gates for triggering. Ensure the thermal management solution accommodates the TO-220FP-3 package dimensions and the specified operating temperature range up to 125 C.

Triacs Part Context

This part belongs to the BT138 series of four-quadrant triacs from WeEn Semiconductors. It shares core electrical characteristics with other variants in the family but differs in voltage ratings and packaging styles. The BT138Y-800E,127 specifically denotes the 800 V version housed in the TO-220FP-3 insulated package, distinguishing it from lower voltage models or surface-mount alternatives like the BTA series.

Triacs Replacement Considerations

Compatible substitutes include the BT138Y-800E without the suffix if packaging differences are acceptable, and the NXP BT138Y-800E,127 which shares identical electrical specifications and pinout configurations.