component
BT134-800T
Public Made by Adomby adom
WEIDA Thyristors (SCR)/Modules, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BT134-800T
WEIDA · Thyristors (SCR)/Modules · TO-252
BT134-800T from WEIDA, in a TO-252. 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 current return terminal; the part is rated 4 A IT(RMS) and 800 V VDRM/VRRM. |
| 2 | T2 | passive | Main terminal 2 of the triac (MT2); the datasheet gives IT(RMS) of 4 A and VDRM/VRRM of 600/800 V. |
| 3 | G | input | Gate trigger input; IGT max is 5 mA (quadrants I-II-III) and 5 mA to 25 mA (quadrant IV, by grade), VGT max 1.3 V, peak gate current 2 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WEIDA |
| Package | TO-252 |
| 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 (800 V variant) | VDRM | 800 | V | Tj=25℃ | 1 | ||
| Repetitive peak reverse voltage (800 V variant) | VRRM | 800 | V | Tj=25℃ | 1 | ||
| RMS on-state current | IT(RMS) | 4 | A | 1 | |||
| Non repetitive surge peak on-state current | ITSM | 25 | A | full cycle, F=50Hz | 2 | ||
| I2t value for fusing | I2t | 3.1 | A2s | tp=10ms | 2 | ||
| Critical rate of rise of on-state current | dI/dt | 50 | A/μs | IG=2×IGT, Quadrant Ⅰ-Ⅱ-Ⅲ | 2 | ||
| Critical rate of rise of on-state current | dI/dt | 10 | A/μs | IG=2×IGT, Quadrant Ⅳ | 2 | ||
| Peak gate current | IGM | 2 | A | 2 | |||
| Average gate power dissipation | PG(AV) | 0.5 | W | 2 | |||
| Peak gate power | PGM | 5 | W | 2 | |||
| Gate trigger current (T sensitivity) | IGT | 5 | mA | VD=12V, RL=33Ω, Quadrant Ⅰ-Ⅱ-Ⅲ | 2 | ||
| Gate non-trigger voltage | VGD | 0.2 | V | VD=VDRM, Tj=125℃, RL=3.3kΩ, Quadrant Ⅰ-Ⅱ-Ⅲ-Ⅳ | 2 | ||
| Holding current (T sensitivity) | IH | 5 | mA | IT=100mA | 2 | ||
| Latching current (T sensitivity) | IL | 8 | mA | IG=1.2IGT, Quadrant Ⅰ-Ⅲ-Ⅳ | 2 | ||
| Latching current (T sensitivity) | IL | 12 | mA | IG=1.2IGT, Quadrant Ⅱ | 2 | ||
| Critical rate of rise of off-state voltage (T sensitivity) | dV/dt | 10 | V/µs | VD=0.66×VDRM, Tj=125℃, gate open | 2 | ||
| On-state voltage | VTM | 1.7 | V | ITM=5A, tp=380μs, Tj=25℃ | 2 | ||
| Repetitive peak off-state and reverse current | IDRM/IRRM | 5 | µA | VDRM=VRRM, Tj=25℃ | 2 | ||
| Repetitive peak off-state and reverse current | IDRM/IRRM | 0.5 | mA | VDRM=VRRM, Tj=125℃ | 2 | ||
| Gate trigger voltage | VGT | 1.3 | V | Quadrant Ⅰ-Ⅱ-Ⅲ-Ⅳ | 2 | ||
| Thermal resistance junction to case (AC), TO-252-4R | Rth(j-c) | 3.8 | ℃/W | junction to case (AC), TO-252-4R | 3 |
CAD (KiCad official)
- Symbol:
BT134-800T - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
bt134-800t-etched.step/bt134-800t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bt134-800t.step/bt134-800t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WEIDA datasheet (9 pp, sha256
8d609ec182d0fef5, retrieved 2026-10-19, 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).
# BT134-800T
**WEIDA** · Thyristors (SCR)/Modules · TO-252
BT134-800T from WEIDA, in a TO-252. 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 current return terminal; the part is rated 4 A IT(RMS) and 800 V VDRM/VRRM. |
| 2 | T2 | passive | Main terminal 2 of the triac (MT2); the datasheet gives IT(RMS) of 4 A and VDRM/VRRM of 600/800 V. |
| 3 | G | input | Gate trigger input; IGT max is 5 mA (quadrants I-II-III) and 5 mA to 25 mA (quadrant IV, by grade), VGT max 1.3 V, peak gate current 2 A. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WEIDA |
| Package | TO-252 |
| 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 (800 V variant) | VDRM | | | 800 | V | Tj=25℃ | 1 |
| Repetitive peak reverse voltage (800 V variant) | VRRM | | | 800 | V | Tj=25℃ | 1 |
| RMS on-state current | IT(RMS) | | | 4 | A | | 1 |
| Non repetitive surge peak on-state current | ITSM | | | 25 | A | full cycle, F=50Hz | 2 |
| I2t value for fusing | I2t | | | 3.1 | A2s | tp=10ms | 2 |
| Critical rate of rise of on-state current | dI/dt | | | 50 | A/μs | IG=2×IGT, Quadrant Ⅰ-Ⅱ-Ⅲ | 2 |
| Critical rate of rise of on-state current | dI/dt | | | 10 | A/μs | IG=2×IGT, Quadrant Ⅳ | 2 |
| Peak gate current | IGM | | | 2 | A | | 2 |
| Average gate power dissipation | PG(AV) | | | 0.5 | W | | 2 |
| Peak gate power | PGM | | | 5 | W | | 2 |
| Gate trigger current (T sensitivity) | IGT | | | 5 | mA | VD=12V, RL=33Ω, Quadrant Ⅰ-Ⅱ-Ⅲ | 2 |
| Gate non-trigger voltage | VGD | 0.2 | | | V | VD=VDRM, Tj=125℃, RL=3.3kΩ, Quadrant Ⅰ-Ⅱ-Ⅲ-Ⅳ | 2 |
| Holding current (T sensitivity) | IH | | | 5 | mA | IT=100mA | 2 |
| Latching current (T sensitivity) | IL | | | 8 | mA | IG=1.2IGT, Quadrant Ⅰ-Ⅲ-Ⅳ | 2 |
| Latching current (T sensitivity) | IL | | | 12 | mA | IG=1.2IGT, Quadrant Ⅱ | 2 |
| Critical rate of rise of off-state voltage (T sensitivity) | dV/dt | 10 | | | V/µs | VD=0.66×VDRM, Tj=125℃, gate open | 2 |
| On-state voltage | VTM | | | 1.7 | V | ITM=5A, tp=380μs, Tj=25℃ | 2 |
| Repetitive peak off-state and reverse current | IDRM/IRRM | | | 5 | µA | VDRM=VRRM, Tj=25℃ | 2 |
| Repetitive peak off-state and reverse current | IDRM/IRRM | | | 0.5 | mA | VDRM=VRRM, Tj=125℃ | 2 |
| Gate trigger voltage | VGT | | 1.3 | | V | Quadrant Ⅰ-Ⅱ-Ⅲ-Ⅳ | 2 |
| Thermal resistance junction to case (AC), TO-252-4R | Rth(j-c) | | 3.8 | | ℃/W | junction to case (AC), TO-252-4R | 3 |
## CAD (KiCad official)
- Symbol: `BT134-800T`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `bt134-800t-etched.step` / `bt134-800t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bt134-800t.step` / `bt134-800t.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [WEIDA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234177103822848) (9 pp, sha256 `8d609ec182d0fef5`, retrieved 2026-10-19, 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](docs/bt134-800t-datasheet.pdf)