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WR0205

Public Made by Adom

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WEIDA Thyristors (SCR)/Modules, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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WR0205

WEIDA · Thyristors (SCR)/Modules · SOT-223

WR0205 from WEIDA, in a SOT-223. 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 K passive Cathode of the SCR (K(1) in the device symbol); the SCR is rated for IT(RMS) 2 A on-state current.
2 A passive Anode of the SCR (A(2) in the device symbol); the SCR blocks VDRM/VRRM of 600/800 V.
3 G input Gate of the SCR (G(3) in the device symbol); trigger current IGT is 40 µA typical and 200 µA max at VD=12 V, RL=33 Ω.

Key specifications

Parameter Value
Manufacturer WEIDA
Package SOT-223
Category Transistors/Thyristors
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 40 200 µA VD=12V, RL=33Ω 2
Gate trigger voltage VGT 0.5 1.5 V VD=12V, RL=33Ω 2
Gate non-trigger voltage VGD 0.2 V VD=VDRM Tj=110℃ RL=3.3kΩ 2
Holding current IH 2 mA IT=50mA 2
Latching current IL 3 mA IG=1.2IGT 2
Critical rate of rise of off-state voltage dV/dt 10 V/µs VD=0.66×VDRM Tj=110℃ G 极开路 RGK=1KΩ 2
On-state voltage VTM 1.5 V ITM=4A tp=380μs Tj=25℃ 2
Repetitive peak off-state and reverse current IDRM/IRRM 5 µA VDRM= VRRM RGK=1KΩ Tj=25℃ 2
Repetitive peak off-state and reverse current IDRM/IRRM 100 µA VDRM= VRRM RGK=1KΩ Tj=110℃ 2
Storage junction temperature range Tstg -40 150 ℃ 1
Operating junction temperature range Tj -40 110 ℃ 1
RMS on-state current IT(RMS) 2 A 1
Non repetitive surge peak on-state current ITSM 20 A full cycle, F=50Hz 1
I2t value for fusing I2t 2 A2s tp=10ms 1
Critical rate of rise of on-state current dI/dt 50 A/µs IG=2×IGT 2
Peak gate current IGM 0.2 A 2
Average gate power dissipation PG(AV) 0.1 W 2
Peak gate power PGM 0.5 W 2
Thermal resistance junction to case (AC), SOT-223 Rth(j-c) 20 ℃/W junction to case(AC), SOT-223-3L 3

CAD (KiCad official)

  • Symbol: WR0205
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: wr0205-etched.step / wr0205-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wr0205.step / wr0205.glb are the bare package body.

Provenance

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

  • Datasheet: WEIDA datasheet (8 pp, sha256 211f0ac51b9f64d2, retrieved 2026-10-09, 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