BTA12-800BWRG

Triacs Overview

The BTA12-800BWRG is a Snubberless Alternistor triac manufactured by STMicroelectronics, designed for general-purpose AC switching applications. It features an 800 V repetitive peak off-state voltage and supports a maximum RMS on-state current of 12 A. The device handles non-repetitive surge currents up to 126 A at 50/60 Hz. Key electrical parameters include a maximum gate trigger voltage of 1.3 V, a gate trigger current of 50 mA, and a holding current of 50 mA. The peak on-state voltage is 1.55 V, with a maximum off-state leakage current of 5 uA. It operates within a junction temperature range of -40°C to +125°C and is housed in a TO-220AB Insulated through-hole package.

Triacs Feature Summary

• Snubberless design eliminates the need for external RC snubber networks across the main terminals.
• High dv/dt immunity reduces false triggering during rapid voltage transitions.
• Insulated TO-220AB package provides enhanced thermal dissipation and electrical isolation.

Triacs Applications

• Static relays and solid-state switches
• Heating regulation systems
• Induction motor starting circuits
• Phase control operation in lighting dimmers

Triacs Procurement Notes

Verify component authenticity by checking the manufacturer's marking code against official datasheets. Confirm the specific suffix 'WRG' corresponds to the required RoHS compliance and packaging format. Ensure the supplier provides traceable documentation to mitigate risks associated with counterfeit power semiconductors.

Triacs Selection Notes

Select this component when high dv/dt immunity is required without external snubber circuitry. The 12 A rating suits moderate power AC loads. Verify that the TO-220AB insulated package fits the mechanical constraints and that the 800 V blocking voltage exceeds the peak line voltage plus transients.

Triacs Part Context

This part belongs to the BTA12 series of industrial-grade triacs from STMicroelectronics. It shares the same physical footprint and pinout as other variants in the family but differs in voltage ratings and specific triggering characteristics. The 'Alternistor' designation indicates optimized internal structure for snubberless operation.

Triacs Replacement Considerations

Direct replacements must match the 12 A RMS current, 800 V voltage rating, and TO-220AB Insulated package. Verify equivalent snubberless performance and gate trigger specifications to ensure circuit compatibility without redesigning the drive network.

Triacs FAQ

What is the maximum dv/dt rating for the BTA12-800BWRG?

The datasheet specifies a typical critical rate of rise of off-state voltage (dv/dt) of 400 V/µs, which allows for snubberless operation in many standard AC applications.

Does the BTA12-800BWRG require a heatsink?

While the TO-220AB Insulated package offers better thermal performance than standard versions, a heatsink is typically required for continuous operation near the 12 A limit to maintain junction temperatures within the specified range.

What is the difference between the BTA12-800BWRG and BTA12-800BRG?

The 'W' suffix in BTA12-800BWRG denotes the use of an insulated TO-220AB package, whereas the 'R' suffix typically indicates a standard non-insulated TO-220AB package. Both share identical electrical characteristics.