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STMicroelectronics BTB08-600SWRG — Discrete Semiconductors

STMicroelectronics BTB08-600SWRG Triac, 8 A, 600 V, TO-220

MPNBTB08-600SWRG
End of Life

STMicroelectronics BTB08-600SWRG, Logic - Sensitive Gate Triac, Single, 8 A (RMS), 600 V Off-State, 10 mA Igt, TO-220-3 Through Hole, Tube.

$1.46Ref. price · indicative, final on quote
STMicroelectronics BTB08-600SWRG datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BTB08-600SWRG specifications
ParameterValue
Triac typeLogic - Sensitive Gate
MountingThrough Hole
Voltage - off state600 V
Voltage - gate trigger (Vgt)1.3 V
Current - hold (Ih)15 mA
Current - gate trigger (Igt)10 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

Product details

Sensitive-gate triac for direct logic drive

The BTB08-600SWRG is an 8 A RMS sensitive-gate triac from STMicroelectronics, housed in a standard TO-220-3 through-hole package. Its 10 mA maximum gate trigger current (Igt) means it switches directly from a microcontroller I/O pin, an optocoupler output, or a low-power logic gate — no driver transistor needed between the control signal and the gate.

600 V off-state and surge capability

Rated for 600 V off-state blocking, this triac comfortably handles 230 VAC and 277 VAC mains with margin for normal line transients. The non-repetitive surge current rating of 80 A at 50 Hz and 84 A at 60 Hz (Itsm) tells you it can survive the inrush from a motor start, a lamp cold filament, or a capacitive load without failing short.

Temperature range and package fit

The TO-220-3 package has a metal tab for heatsinking — bolt it to a chassis or a dedicated heatsink when the RMS current exceeds about 4 A in free air, or derate per the datasheet curve.

Active lifecycle and compliance

Listed as Active by STMicroelectronics — no end-of-life or last-time-buy risk for ongoing production or new designs. Fully ROHS3 compliant, so no exemption paperwork needed for EU, UKCA, or global markets.

Frequently asked questions

Will BTB08-600SWRG drop into a board designed for BTB08-800TWRG?

Yes — both are the same TO-220-3 package, same 8 A RMS rating, same sensitive-gate trigger characteristics. The only difference is the off-state voltage: 600 V for this part versus 800 V for the TWRG variant. If your board's peak line voltage never exceeds 600 V (e.g., 230/277 VAC mains), the 600SWRG is a direct drop-in replacement without any PCB or heatsink change.

What is the closest lower-current sibling in the same family?

The BTB06-600SWRG is the 6 A RMS version, same 600 V off-state, same sensitive-gate logic-level trigger, same TO-220-3 package. It is a drop-in for BOM positions where the load current stays under 6 A RMS and you want a lower-cost or lower-dissipation part.