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BTA08-800CW

Public Made by Adom

by adom

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

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BTA08-800CW

WEIDA · TRIACs · TO-220

BTA08-800CW from WEIDA, in a TO-220. 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 T1 passive Main terminal 1 of the triac (MT1), the gate reference terminal; the part is rated for 8 A RMS on-state current and the insulated TO-220A tab is isolated to 2500 VRMS.
2 T2 passive Main terminal 2 of the triac (MT2), which blocks VDRM/VRRM of 800 V for this part and carries up to 8 A RMS.
3 G input Gate trigger input; for the CW grade IGT is max 35 mA in quadrants I-II-III at VD=12 V, RL=33 Ω, with VGT max 1.5 V and peak gate current IGM 4 A.

Key specifications

Parameter Value
Manufacturer WEIDA
Package TO-220
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
Gate trigger current IGT 35 mA VD=12V, RL=33Ω, quadrants I-II-III, CW 2
Gate trigger voltage VGT 1.5 V VD=12V, RL=33Ω, quadrants I-II-III 2
Gate non-trigger voltage VGD 0.2 V VD=VDRM, Tj=125℃, RL=3.3kΩ, quadrants I-II-III 2
Holding current IH 40 mA IT=100mA, CW 2
Latching current I-III IL 50 mA IG=1.2IGT, quadrants I-III, CW 2
Latching current II IL 70 mA IG=1.2IGT, quadrant II, CW 2
Critical rate of rise of off-state voltage dV/dt 500 V/µs VD=2/3VDRM, Tj=125℃, gate open, CW 2
On-state voltage VTM 1.5 V ITM=11A, tp=380μs, Tj=25℃ 3
Off-state/reverse leakage current IDRM/IRRM 5 µA VDRM=VRRM, Tj=25℃ 3
Off-state/reverse leakage current IDRM/IRRM 1 mA VDRM=VRRM, Tj=125℃ 3
Thermal resistance junction to case (AC), TO-220A (Ins) Rth(j-c) 2.8 ℃/W junction to case (AC), TO-220A(Ins) 3
Storage junction temperature range Tstg -40 150 ℃ 1
Operating junction temperature range Tj -40 125 ℃ 1
Repetitive peak off-state voltage VDRM 800 V Tj=25℃; printed 600/800, 800 V for this part 1
Repetitive peak reverse voltage VRRM 800 V Tj=25℃; printed 600/800, 800 V for this part 1
RMS on-state current IT(RMS) 8 A 1
Non repetitive surge peak on-state current ITSM 80 A full cycle, F=50Hz 1
I2t value for fusing I2t 32 A2s tp=10ms 2
Critical rate of rise of on-state current dI/dt 50 A/μs IG=2×IGT 2
Peak gate current IGM 4 A 2
Average gate power dissipation PG(AV) 1 W 2
Peak gate power PGM 5 W 2

CAD (KiCad official)

  • Symbol: BTA08-800CW
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: bta08-800cw-etched.step / bta08-800cw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bta08-800cw.step / bta08-800cw.glb are the bare package body.

Provenance

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

  • Datasheet: WEIDA datasheet (8 pp, sha256 f2257bbc69abb4ac, retrieved 2026-10-23, tier: lcsc)
  • 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