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BTB26-800B

KY · TRIACs · TO-263

BTB26-800B from KY, in a TO-263. 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 T1 (T1(1) in the symbol), the current-carrying terminal on the opposite side of the triac from T2, rated IT(RMS) 25A at Tc=110°C.
2 T2 passive Main terminal T2 (T2(2) in the symbol), connected to the tab, with repetitive peak off-state voltage VDRM/VRRM of 800V for the -800 version.
3 G input Gate trigger input (G(3) in the symbol) with gate trigger voltage VGT ≤1.5V at VD=12V, RL=30Ω.

Key specifications

Parameter Value
Manufacturer KY
Package TO-263
Category Triode/MOS Tube/Transistor
Pins 3

CAD (KiCad official)

  • Symbol: BTB26-800B
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263 (KiCad packages3D, STEP)
  • 3D model files: btb26-800b-etched.step / btb26-800b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); btb26-800b.step / btb26-800b.glb are the bare package body.

Provenance

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

  • Datasheet: KY datasheet (7 pp, sha256 b9ad868fbb595d26, retrieved 2026-10-28, 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