component
BT137-800E
Public Made by Adomby adom
WEIDA Thyristors (SCR)/Modules, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 8d ago |
| viewers | 8d ago |
| bt137-800e-etched.glb | 8d ago |
| bt137-800e-etched.step | 8d ago |
| bt137-800e-hero.glb | 8d ago |
| bt137-800e-hero.overlay.json | 8d ago |
| bt137-800e.glb | 8d ago |
| bt137-800e.kicad_mod | 8d ago |
| bt137-800e.kicad_sym | 8d ago |
| bt137-800e.lbr | 8d ago |
| bt137-800e.step | 8d ago |
| package.json | 8d ago |
| page.json | 8d ago |
| README.md | 8d ago |
BT137-800E
WEIDA · Thyristors (SCR)/Modules · TO-252
BT137-800E 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 T1 of the triac (symbol T1(1)), the reference terminal for gate triggering, rated IT(RMS) 8 A and VDRM/VRRM 800 V for the -800 grade. |
| 2 | T2 | passive | Main terminal T2 of the triac (symbol T2(2)), carrying up to 8 A RMS on-state current with 800 V repetitive peak off-state/reverse voltage for the -800 grade. |
| 3 | G | input | Gate trigger input (symbol G(3)); E grade needs IGT up to 10 mA in quadrants I-II-III and 25 mA in quadrant IV at VD=12 V, with VGT max 1.3 V and peak gate current IGM 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 |
|---|---|---|---|---|---|---|---|
| Gate trigger current, quadrants Ⅰ-Ⅱ-Ⅲ (E grade) | IGT | 10 | mA | VD=12V, RL=33Ω, Quadrant Ⅰ-Ⅱ-Ⅲ | 2 | ||
| Gate trigger current, quadrant Ⅳ (E grade) | IGT | 25 | mA | VD=12V, RL=33Ω, Quadrant Ⅳ | 2 | ||
| Gate non-trigger voltage | VGD | 0.2 | V | VD=VDRM, Tj=125℃, RL=3.3kΩ, Quadrant Ⅰ-Ⅱ-Ⅲ-Ⅳ | 2 | ||
| Holding current | IH | 20 | mA | IT=100mA | 2 | ||
| Latching current, quadrants Ⅰ-Ⅲ-Ⅳ | IL | 30 | mA | IG=1.2IGT, Quadrant Ⅰ-Ⅲ-Ⅳ | 2 | ||
| Latching current, quadrant Ⅱ | IL | 40 | mA | IG=1.2IGT, Quadrant Ⅱ | 2 | ||
| Critical rate of rise of off-state voltage (E grade) | dV/dt | 50 | V/µs | VD=0.66×VDRM, Tj=125℃, Gate open | 2 | ||
| On-state voltage | VTM | 1.6 | V | ITM=10A, 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 | ||
| Storage junction temperature range | Tstg | -40 | 150 | ℃ | 1 | ||
| Operating junction temperature range | Tj | -40 | 125 | ℃ | 1 | ||
| Repetitive peak off-state voltage (800V variant) | VDRM | 800 | V | Tj=25℃ | 1 | ||
| Repetitive peak reverse voltage (800V variant) | VRRM | 800 | V | Tj=25℃ | 1 | ||
| RMS on-state current | IT(RMS) | 8 | A | 1 | |||
| Non repetitive surge peak on-state current | ITSM | 65 | A | full cycle, F=50Hz | 1 | ||
| I2t value for fusing | I2t | 21 | A2s | tp=10ms | 1 | ||
| Critical rate of rise of on-state current, quadrants Ⅰ-Ⅱ-Ⅲ | dI/dt | 50 | A/μs | IG=2×IGT, Quadrant Ⅰ-Ⅱ-Ⅲ | 2 | ||
| Critical rate of rise of on-state current, quadrant Ⅳ | 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 | |||
| Junction to case thermal resistance (AC), TO-252-4R | Rth(j-c) | 2 | ℃/W | junction to case (AC) | 3 |
CAD (KiCad official)
- Symbol:
BT137-800E - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
bt137-800e-etched.step/bt137-800e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bt137-800e.step/bt137-800e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WEIDA datasheet (8 pp, sha256
9460c02a1dda9654, 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).