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STMicroelectronics BTA16-800SWRG — Discrete Semiconductors

STMicroelectronics BTA16-800SWRG Triac, 800V 16A

MPNBTA16-800SWRG
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STMicroelectronics BTA16-800SWRG, Logic - Sensitive Gate Triac, Single Configuration, 800 V Off State, 16 A RMS On State, Through Hole TO-220-3, -40°C to 125°C.

$2.6400Ref. price · indicative, final on quote
STMicroelectronics BTA16-800SWRG datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BTA16-800SWRG specifications
ParameterValue
Triac typeLogic - Sensitive Gate
MountingThrough Hole
Voltage - off state800 V
Voltage - gate trigger (Vgt)1.3 V
Current - hold (Ih)15 mA
Current - gate trigger (Igt)10 mA
Current - on state (It (RMS))16 A
Current - non rep. surge 50, 60Hz160A, 168A
Operating temperature-40°C~125°C(TJ)
PackageTube
ConfigurationSingle
CaseTO-220-3

Product details

16 A sensitive-gate triac for mains-switched loads

The STMicroelectronics BTA16-800SWRG is a logic-level sensitive-gate triac rated for 800 V off-state voltage and 16 A RMS on-state current, housed in a TO-220 through-hole package. The 10 mA maximum gate trigger current lets a microcontroller I/O or optocoupler fire it directly, eliminating a driver transistor from the BOM. Intended for AC load switching in industrial and appliance controls — motor starters, heater banks, lighting ballasts, and solid-state relays — where the 125°C junction temperature rating covers the thermal environment of a sealed enclosure or adjacent heatsink.

Package and mounting — TO-220 thermal path

The TO-220-3 package (supplier device package TO-220) is a through-hole tab-mount design. The metal tab is the collector/drain thermal path — bolt it to a heatsink with thermal compound for any load above a few amps. The 16 A RMS rating assumes adequate heatsinking; at full current in free air the die will exceed the 125°C junction limit without one.

Frequently asked questions

What is the gate trigger current of BTA16-800SWRG?

The maximum gate trigger current (Igt) is 10 mA, with a maximum gate trigger voltage of 1.3 V. That qualifies it as a sensitive-gate triac, drivable directly from logic-level outputs.

Can BTA16-800SWRG be used for AC dimming?

Yes, the sensitive-gate characteristic (10 mA Igt) and 16 A RMS rating make it suitable for phase-control AC dimming of resistive and inductive loads like incandescent lamps, heaters, and small motors, provided the load current stays within the 16 A rating and adequate heatsinking is used.

What are the alternatives to BTA16-800SWRG?

The closest functional siblings in the same sensitive-gate family are the BTA08-600TWRG and BTA08-600SWRG, both rated for 600 V off-state and 8 A RMS on-state. They are not pin-for-pin replacements — the voltage and current ratings differ — but share the same TO-220 package and logic-level gate drive.