STMicroelectronics Snubberless™ series, Triac Type Alternistor - Snubberless, Configuration Single, Mounting Type Through Hole, Package / Case TO-220-3 Full Pack, Voltage - Off State 800 V, Current - On State (It (RMS)) (Max) 16 A, Operating Temperature -40°C ~ 150°C (TJ).
| Parameter | Value |
|---|---|
| Series | Snubberless™ |
| Triac type | Alternistor - Snubberless |
| Mounting | Through Hole |
| Voltage - off state | 800 V |
| Voltage - gate trigger (Vgt) | 1.3 V |
| Current - hold (Ih) | 40 mA |
| Current - gate trigger (Igt) | 35 mA |
| Current - on state (It (RMS)) | 16 A |
| Current - non rep. surge 50, 60Hz | 120A, 126A |
| Operating temperature | -40°C ~ 150°C (TJ) |
| Package | Tube |
| Configuration | Single |
| Case | TO-220-3 Full Pack |
The ST T1635T-8FP is a 16 A RMS Snubberless Alternistor triac in a TO-220FPAB full-pack isolated package. Rated for 800 V off-state voltage.
TO-220FPAB full-pack — the tab is fully isolated, no insulating washer needed. Mount with a single M3 screw and a dab of thermal compound.
ROHS3 compliant with no exemptions; no REACH or conflict-minerals concern for EU shipments. The Snubberless series is a mature, stable product line; PCN frequency is low.
This part is sourced through independent distribution and quoted to order against an RFQ. Submit a request for current availability and pricing.
Yes, it is ROHS3 compliant, with no exemptions.
Yes. The Snubberless Alternistor design is specifically built for inductive loads — no external snubber is required. The 126 A surge rating covers motor inrush.
For a lower-current design, the T1235T-8FP (12 A, same TO-220FPAB package, Snubberless Alternistor) is a functional second-source. For a standard (non-Alternistor) 16 A triac, the T1635H-8I is a different device — it requires an external snubber and has a 125°C junction limit.