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STMicroelectronics BTA08-800BWRG — Discrete Semiconductors

ST BTA08-800BWRG Snubberless Triac, 800V 8A TO-220AB

MPNBTA08-800BWRG
End of Life

STMicroelectronics Snubberless™ series, Triac Type Alternistor - Snubberless, Single, Through Hole, TO-220-3 Full Pack, 800 V Off State, 8 A RMS On State, -40°C to 125°C.

$1.77Ref. price · indicative, final on quote
STMicroelectronics BTA08-800BWRG datasheet (PDF)
PackagingTO-220-3 Full Pack
RoHSROHS3 Compliant
SeriesSnubberless™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BTA08-800BWRG specifications
ParameterValue
SeriesSnubberless™
Triac typeAlternistor - Snubberless
MountingThrough Hole
Voltage - off state800 V
Voltage - gate trigger (Vgt)1.3 V
Current - hold (Ih)50 mA
Current - gate trigger (Igt)50 mA
Current - on state (It (RMS))8 A
Current - non rep. surge 50, 60Hz80A, 84A
Operating temperature-40°C ~ 125°C (TJ)
PackageTube
ConfigurationSingle
CaseTO-220-3 Full Pack

Product details

The ST BTA08-800BWRG is an 800 V, 8 A RMS Snubberless Alternistor triac in a TO-220AB insulated full-pack package. It is designed for AC switching applications where a standard triac would need external snubber networks — the Snubberless construction handles high dv/dt without one, simplifying the BOM and board layout. Typical uses include solid-state relays, motor speed controllers, lighting dimmers, and industrial heating controls.

Package and mounting — TO-220AB insulated

The TO-220-3 Full Pack (supplier device package TO-220AB Insulated) is a through-hole package with the tab fully isolated. No additional insulating pad or bushing is required when mounting to a grounded heatsink. The full-pack construction also improves thermal cycling reliability compared to a non-isolated TO-220 with a separate insulator.

This part is Active in ST's portfolio — no last-time-buy notice, no obsolescence risk. It is ROHS3 compliant. For production BOMs, it can be specified without lifecycle concern.

Frequently asked questions

What is the equivalent of the BTA08-800BWRG?

The closest functional peer in the same Snubberless family is the BTA06-800BWRG, which is identical except for a 6 A RMS on-state current instead of 8 A. The BTB10-800BWRG is the 10 A version. All share the same 800 V off-state, TO-220AB package, and gate trigger characteristics.

Can the BTA08-800BWRG be used for AC switching?

Yes, it is designed for AC switching applications. The Snubberless Alternistor construction handles high dv/dt without external snubbers, making it suitable for resistive and inductive AC loads within its 8 A RMS and 800 V ratings.