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T3035H-8I

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STMicroelectronics TRIACs, TO-220AB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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T3035H-8I

STMicroelectronics · TRIACs · TO-220AB

T3035H-8I from STMicroelectronics, in a TO-220AB. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 A1 passive Main terminal A1 (reference terminal for A2 and gate); the triac blocks 800 V (VDRM/VRRM) symmetrically and carries 30 A RMS on-state current.
2 A2 passive Main terminal A2, connected to the AC load side; the tab is insulated (2.5 kV RMS, 1 minute) so it is not electrically connected to the tab.
3 G input Gate trigger input; IGT 5 mA min to 35 mA max and VGT max 1.3 V at VD = 12 V, RL = 30 Ω, in quadrants I, II and III, with peak gate current limited to 4 A (tp = 20 µs).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-220AB
Category Transistors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
RMS on-state current (full sine wave) IT(RMS) 30 A Tc = 91 °C 2
Non repetitive surge peak on-state current ITSM 283 A full cycle, Tj initial = 25 °C, t = 16.7 ms 2
Non repetitive surge peak on-state current ITSM 270 A full cycle, Tj initial = 25 °C, t = 20 ms 2
I2t value for fusing I2t 482 A2s tp = 10 ms 2
Critical rate of rise of on-state current dl/dt 100 A/µs IG = 2 x IGT, tr ≤ 100 ns, f = 100 Hz, Tj = 25 °C 2
Repetitive peak off-state voltage VDRM/VRRM 800 V 2
Non repetitive peak off-state voltage VDSM/VRSM 900 V tp = 10 ms, Tj = 25 °C 2
Peak gate current IGM 4 A tp = 20 µs, Tj = 150 °C 2
Maximum gate power dissipation PGM 5 W 2
Average gate power dissipation PG(AV) 1 W Tj = 150 °C 2
Storage temperature range Tstg -40 150 °C 2
Operating junction temperature range Tj -40 150 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s 2
Insulation RMS voltage VINS 2.5 kV 1 minute 2
Gate trigger current IGT 5 35 mA VD = 12 V, RL = 30 Ω, quadrants I - II - III 2
Gate trigger voltage VGT 1.3 V VD = 12 V, RL = 30 Ω, quadrants I - II - III 2
Gate non-trigger voltage VGD 0.15 V VD = VDRM, RL = 3.3 kΩ, Tj = 150 °C, quadrants I - II - III 2
Latching current IL 75 mA IG = 1.2 x IGT, quadrants I - III 2
Latching current IL 90 mA IG = 1.2 x IGT, quadrant II 2
Holding current IH 60 mA IT = 500 mA, gate open 2
Static dV/dt dV/dt 1500 V/µs VD = 536 V, gate open, Tj = 150 °C 2
Critical rate of decrease of commutating current (dl/dt)c 25 A/ms Without snubber network, Tj = 150 °C 2
On-state voltage VTM 1.55 V IT = 42 A, tp = 380 µs, Tj = 25 °C 3
Threshold voltage VTO 0.83 V Tj = 150 °C 3
Dynamic resistance RD 16 mΩ Tj = 150 °C 3
Off-state/reverse leakage current IDRM/IRRM 5 µA VDRM = VRRM = 800 V, Tj = 25 °C 3
Off-state/reverse leakage current IDRM/IRRM 8.5 mA VDRM = VRRM = 800 V, Tj = 150 °C 3
Off-state/reverse leakage current IDRM/IRRM 3.6 mA VDRM = VRRM = 400 V, peak voltage, Tj = 150 °C 3
Junction to case thermal resistance (AC) Rth(j-c) 1.6 °C/W 3
Junction to ambient thermal resistance Rth(j-a) 60 °C/W 3

CAD (KiCad official)

  • Symbol: T3035H-8I
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220AB (KiCad packages3D, STEP)
  • 3D model files: t3035h-8i-etched.step / t3035h-8i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t3035h-8i.step / t3035h-8i.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (11 pp, sha256 26d62689eadb622d, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF