STMicroelectronics Snubberless™ Triac, Alternistor - Snubberless, Single, 600 V Off State, 12 A RMS On-State, Through Hole, TO-220-3, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Series | Snubberless™ |
| Triac type | Alternistor - Snubberless |
| Mounting | Through Hole |
| Voltage - off state | 600 V |
| Voltage - gate trigger (Vgt) | 1.3 V |
| Current - hold (Ih) | 50 mA |
| Current - gate trigger (Igt) | 50 mA |
| Current - on state (It (RMS)) | 12 A |
| Current - non rep. surge 50, 60Hz | 120A, 126A |
| Operating temperature | -40°C ~ 125°C (TJ) |
| Package | Tube |
| Configuration | Single |
| Case | TO-220-3 |
Its Snubberless construction means it can switch inductive loads — motors, solenoids, transformers — without the external RC snubber that standard triacs typically require, saving two passives and the associated board area.
If you are qualifying a new BOM, this part is safe to commit to production without a redesign horizon.
The BTB12-600BWRG is a Snubberless Alternistor, meaning it can switch inductive loads without an external RC snubber. Standard BTB triacs (e.g., BTB12-600BW without the 'R' suffix) require a snubber for inductive loads to avoid false triggering or failure during commutation. The 'R' suffix indicates the Snubberless variant. If your application drives a motor, transformer, or solenoid, the Snubberless version saves BOM cost and board space.
Yes, the 600 V off-state voltage and 12 A RMS on-state current, combined with the Snubberless Alternistor structure, make it suitable for switching single-phase AC induction motors up to about 1.5 HP (1.1 kW) on 230 VAC, or about 0.75 HP (0.55 kW) on 115 VAC. The 126 A surge rating handles motor start inrush. For three-phase motors, you would need three devices, one per phase, and the 600 V rating is marginal for 400 VAC three-phase systems — use a 800 V or 1000 V rated triac for that application.