component
97A8
Public Made by Adomby adom
WEIDA Thyristors (SCR)/Modules, SOT-23-3L. 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
markdown97A8
WEIDA · Thyristors (SCR)/Modules · SOT-23-3L
97A8 from WEIDA, in a SOT-23-3L. 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 of the triac (symbol T1(1)); the gate trigger specs (IGT 5 mA max quadrants I-II-III, 10 mA quadrant IV at VD=12V, RL=33Ω) are measured against this terminal. |
| 2 | T2 | passive | Main terminal T2 of the triac (symbol T2(2)), rated for VDRM/VRRM 600/800 V and IT(RMS) 0.8 A. |
| 3 | G | input | Gate trigger input (symbol G(3)) with VGT max 1.3 V and peak gate current IGM of 1 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WEIDA |
| Package | SOT-23-3L |
| 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 |
|---|---|---|---|---|---|---|---|
| Storage junction temperature range | Tstg | -40 | 150 | ℃ | 1 | ||
| Operating junction temperature range | Tj | -40 | 125 | ℃ | 1 | ||
| Repetitive peak off-state voltage | VDRM | 600 | 800 | V | Tj=25℃; printed as 600/800 for the series; 97A8 voltage class not confirmed | 1 | |
| Repetitive peak reverse voltage | VRRM | 600 | 800 | V | Tj=25℃; printed as 600/800 for the series; 97A8 voltage class not confirmed | 1 | |
| RMS on-state current | IT(RMS) | 0.8 | A | 1 | |||
| Non repetitive surge peak on-state current | ITSM | 9 | A | full cycle, F=50Hz | 1 | ||
| I2t value for fusing | I2t | 0.45 | A2s | tp=10ms | 1 | ||
| Critical rate of rise of on-state current, Ⅰ-Ⅱ-Ⅲ | dI/dt | 50 | A/μs | IG=2×IGT; Ⅰ-Ⅱ-Ⅲ quadrants | 1 | ||
| Critical rate of rise of on-state current, Ⅳ | dI/dt | 10 | A/μs | IG=2×IGT; Ⅳ quadrant | 1 | ||
| Peak gate current | IGM | 1 | A | 1 | |||
| Average gate power dissipation | PG(AV) | 0.1 | W | 1 | |||
| Peak gate power | PGM | 5 | W | 1 | |||
| Gate trigger current, Ⅰ-Ⅱ-Ⅲ | IGT | 5 | mA | VD=12V, RL=33Ω; Ⅰ-Ⅱ-Ⅲ quadrants | 2 | ||
| Gate trigger current, Ⅳ | IGT | 10 | mA | VD=12V, RL=33Ω; Ⅳ quadrant | 2 | ||
| Gate trigger voltage | VGT | 1.3 | V | Ⅰ-Ⅱ-Ⅲ-Ⅳ quadrants | 2 | ||
| Gate non-trigger voltage | VGD | 0.2 | V | VD=VDRM, Tj=125℃, RL=3.3kΩ; Ⅰ-Ⅱ-Ⅲ-Ⅳ quadrants | 2 | ||
| Holding current | IH | 7 | mA | IT=100mA | 2 | ||
| Latching current, Ⅰ-Ⅲ-Ⅳ | IL | 5 | mA | IG=1.2IGT; Ⅰ-Ⅲ-Ⅳ quadrants | 2 | ||
| Latching current, Ⅱ | IL | 20 | mA | IG=1.2IGT; Ⅱ quadrant | 2 | ||
| Critical rate of rise of off-state voltage | dV/dt | 50 | V/µs | VD=0.66×VDRM, Tj=125℃, gate open | 2 | ||
| On-state voltage | VTM | 1.5 | V | ITM=1.1A, tp=380μs, Tj=25℃ | 2 | ||
| Repetitive peak off-state current | IDRM/IRRM | 5 | µA | VDRM=VRRM, Tj=25℃ | 2 | ||
| Repetitive peak off-state current | IDRM/IRRM | 0.5 | mA | VDRM=VRRM, Tj=125℃ | 2 | ||
| Thermal resistance junction to case (AC), SOT-223/SOT-23-2L | Rth(j-c) | 45 | ℃/W | junction to case (AC); SOT-223/SOT-23-2L as printed | 2 |
CAD (KiCad official)
- Symbol:
97A8 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
97a8-etched.step/97a8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);97a8.step/97a8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WEIDA datasheet (6 pp, sha256
d5c165704719d1a3, retrieved 2026-10-18, 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).