BT138B-800E,118

Triacs Overview

The WeEn Semiconductors BT138B-800E,118 is a bidirectional triac designed for surface-mount applications in the D2PAK-3 package. It supports an RMS on-state current of 12 A and withstands rated repetitive peak off-state voltages up to 800 V. The device features a maximum non-repetitive on-state current of 105 A and a low on-state voltage of 1.4 V. Gate triggering parameters include a maximum holding current of 30 mA, a gate trigger voltage of 700 mV, and a gate trigger current of 22 mA. It operates within a temperature range of -40°C to +125°C with a leakage current of 100 uA at VDRM.

Triacs Feature Summary

• Surface-mount construction in a D2PAK-3 package for automated assembly
• High voltage blocking capability suitable for mains-connected loads
• Robust surge handling with high non-repetitive on-state current rating

Triacs Applications

• Solid-state relays
• Industrial motor control circuits
• Lighting dimmer modules

Triacs Procurement Notes

Verify the complete part number including the suffix ,118 to confirm tape-and-reel packaging specifications. Confirm RoHS compliance status through official documentation prior to integration. Ensure thermal management design accounts for the D2PAK-3 package characteristics during high-current operation.

Triacs Selection Notes

Select this component when a 12 A RMS current rating and 800 V blocking voltage are required in a surface-mount form factor. Compare gate trigger current requirements against available drive circuitry capabilities. Evaluate thermal dissipation needs based on the specific PCB layout and ambient operating conditions.

Triacs Part Context

This triac belongs to the BT138 series from WeEn Semiconductors, which provides standardized thyristor solutions for power switching. The BT138B variant specifically denotes the 800 V voltage class within this family, distinguishing it from lower voltage ratings like 600 V found in other models such as the BT138B-600.

Triacs Replacement Considerations

Cross-reference with equivalent 12 A, 800 V surface-mount triacs in D2PAK packages from other manufacturers. Verify pinout compatibility and electrical parameter overlaps before substitution.