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STMicroelectronics BTB24-600BWRG — Discrete Semiconductors

STMicroelectronics BTB24-600BWRG Triac, 600V 25A TO-220

MPNBTB24-600BWRG
Active

STMicroelectronics Snubberless™ series, BTB24-600BWRG, Alternistor - Snubberless Triac, 600 V Off State, 25 A RMS On-State, Through Hole, TO-220-3, -40°C ~ 125°C.

$2.8000Ref. price · indicative, final on quote
STMicroelectronics BTB24-600BWRG datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesSnubberless™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BTB24-600BWRG specifications
ParameterValue
SeriesSnubberless™
Triac typeAlternistor - Snubberless
MountingThrough Hole
Voltage - off state600 V
Voltage - gate trigger (Vgt)1.3 V
Current - hold (Ih)75 mA
Current - gate trigger (Igt)50 mA
Current - on state (It (RMS))25 A
Current - non rep. surge 50, 60Hz250A, 260A
Operating temperature-40°C ~ 125°C (TJ)
PackageTube
ConfigurationSingle
CaseTO-220-3

Product details

Snubberless™ triac — 25 A RMS, 600 V blocking, TO-220

The STMicroelectronics BTB24-600BWRG is a 25 A RMS, 600 V off-state Snubberless™ alternistor triac in a TO-220-3 through-hole package. The Snubberless™ construction provides high dv/dt immunity without an external RC snubber, which simplifies the PCB layout and reduces component count on inductive-load switching circuits like motor starters, solid-state relays, and industrial heater controls.

Gate drive and trigger thresholds

Maximum gate trigger current (Igt) is 50 mA, with a maximum gate trigger voltage (Vgt) of 1.3 V. The 75 mA maximum holding current (Ih) ensures the triac latches on once triggered and stays conducting until the load current drops below that threshold — relevant for low-current loads where the holding current may not be reached, causing the device to drop out mid-cycle.

Surge capability and thermal design

Non-repetitive surge current (Itsm) is rated at 250 A at 50 Hz and 260 A at 60 Hz. This surge rating covers inrush from incandescent lamp loads, motor start-up, or capacitor charging.

It is ROHS3 compliant.

Frequently asked questions

What is the gate trigger current for BTB24-600BWRG?

These are the worst-case thresholds at 25°C junction temperature; actual trigger levels are typically lower.

What is the difference between BTB24-600BWRG and BTA24-600B?

The BTB24-600BWRG is a Snubberless™ alternistor triac with internal dv/dt immunity, eliminating the need for an external RC snubber when switching inductive loads. The BTA24-600B is a standard triac that typically requires a snubber network for reliable inductive-load commutation. Both share the same TO-220 package and 25 A / 600 V ratings, but the Snubberless™ variant is the preferred choice for designs where board space or BOM count is constrained.

Is BTB24-600BWRG suitable for inductive loads?

Yes. The Snubberless™ alternistor construction is specifically designed for inductive loads such as motors, solenoids, and transformers. It provides high dv/dt immunity without an external snubber, which is the standard failure mode for standard triacs on inductive switching.

Does BTB24-600BWRG come in a tube?

Yes, the listed packaging is Tube. The TO-220-3 through-hole package ships in standard anti-static tubes.