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STMicroelectronics T1235H-6I — Discrete Semiconductors

STMicroelectronics T1235H-6I Triac, Snubberless™, 600V, 12A

MPNT1235H-6I
End of Life

STMicroelectronics Snubberless™ series, Triac Type Alternistor - Snubberless, Single configuration, Through Hole, TO-220-3 package, 600 V Off State, 12 A RMS On State, -40°C to 150°C junction temperature.

$1.69Ref. price · indicative, final on quote
STMicroelectronics T1235H-6I datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesSnubberless™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

T1235H-6I specifications
ParameterValue
SeriesSnubberless™
Triac typeAlternistor - Snubberless
MountingThrough Hole
Voltage - off state600 V
Voltage - gate trigger (Vgt)1 V
Current - hold (Ih)35 mA
Current - gate trigger (Igt)35 mA
Current - on state (It (RMS))12 A
Current - non rep. surge 50, 60Hz120A, 126A
Operating temperature-40°C ~ 150°C (TJ)
PackageTube
ConfigurationSingle
CaseTO-220-3

Product details

12 A Snubberless™ triac for inductive-load switching

The STMicroelectronics T1235H-6I is a 12 A RMS Snubberless™ Alternistor triac in a TO-220 through-hole package, rated for 600 V off-state blocking. It is designed for AC load switching where inductive kickback would otherwise demand an external RC snubber — the Snubberless™ construction handles high dV/dt commutation internally. Typical applications include solid-state relays, motor speed controllers, heating elements, and lighting dimmers in industrial and appliance environments.

Frequently asked questions

Does the T1235H-6I require a snubber circuit?

No — the Snubberless™ design handles high dV/dt commutation internally, so an external RC snubber is not needed for most inductive loads. Verify the specific load conditions against the datasheet commutation curves.