component
BTA20-800CW
Public Made by Adomby adom
WEIDA TRIACs, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBTA20-800CW
WEIDA · TRIACs · TO-220
BTA20-800CW 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 (T1(1)); insulated from the heatsink tab with a rated insulation voltage of 2500 VRMS. |
| 2 | T2 | passive | Main terminal 2 of the triac (T2(2)); BTA20 isolates all three terminals from the tab at 2500 VRMS, with 20 A RMS on-state current and VDRM/VRRM of 800 V for this part. |
| 3 | G | input | Gate trigger input (G(3)); for the CW grade IGT is max 35 mA and VGT max 1.3 V in quadrants I-II-III (VD=12V, RL=33Ω). |
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 (I-II-III) | IGT | 35 | mA | VD=12V, RL=33Ω, quadrants I-II-III | 2 | ||
| Gate trigger voltage | VGT | 1.3 | 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 | 50 | mA | IT=100mA | 2 | ||
| Latching current (I-III) | IL | 60 | mA | IG=1.2IGT, quadrants I-III | 2 | ||
| Latching current (II) | IL | 70 | mA | IG=1.2IGT, quadrant II | 2 | ||
| Critical rate of rise of off-state voltage | dV/dt | 500 | V/µs | VD=2/3VDRM, Tj=125℃, gate open | 2 | ||
| On-state voltage | VTM | 1.5 | V | ITM=28A, 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 | 2 | mA | VDRM=VRRM, Tj=125℃ | 3 | ||
| Thermal resistance junction to case (AC), TO-220A (Ins) | Rth(j-c) | 2 | ℃/W | junction to case(AC), TO-220A(Ins) | 3 | ||
| Thermal resistance junction to case (AC), TO-220F (Ins) | Rth(j-c) | 2.1 | ℃/W | junction to case(AC), TO-220F(Ins) | 3 | ||
| Storage temperature range | Tstg | -40 | 150 | ℃ | 1 | ||
| Operating junction temperature range | Tj | -40 | 125 | ℃ | 1 | ||
| Repetitive peak off-state voltage | VDRM | 800 | V | Tj=25℃, 800V grade | 1 | ||
| Repetitive peak reverse voltage | VRRM | 800 | V | Tj=25℃, 800V grade | 1 | ||
| RMS on-state current | IT(RMS) | 20 | A | 1 | |||
| Non repetitive surge peak on-state current | ITSM | 200 | A | full cycle, F=50Hz | 1 | ||
| I2t value for fusing | I2t | 200 | A2s | tp=10ms | 1 | ||
| Critical rate of rise of on-state current | dI/dt | 50 | A/μs | IG=2×IGT | 1 | ||
| Peak gate current | IGM | 4 | A | 1 | |||
| Average gate power dissipation | PG(AV) | 1 | W | 1 | |||
| Peak gate power | PGM | 10 | W | 1 |
CAD (KiCad official)
- Symbol:
BTA20-800CW - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
bta20-800cw-etched.step/bta20-800cw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bta20-800cw.step/bta20-800cw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WEIDA datasheet (7 pp, sha256
8aa2ebd3e1968ec6, retrieved 2026-10-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).