component
SMBJ250A
Public Made by Adomby adom
LGE TVS, SMB(DO-214AA). 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
markdownSMBJ250A
LGE · TVS · SMB(DO-214AA)
SMBJ250A from LGE, in a SMB(DO-214AA). 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 terminal, marked by the color band on the unidirectional SMBJ250A (VRWM 250 V, VBR 279-309 V at 1 mA, 600 W peak pulse power). |
| 2 | A | passive | Anode terminal at the end opposite the color band; the unidirectional SMBJ250A clamps at 405 V max at IPP 1.48 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | SMB(DO-214AA) |
| Category | Circuit Protection |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 279 | 309 | V | @IT = 1 mA | 3 | |
| Test Current | IT | 1 | mA | 3 | |||
| Working Peak Reverse Voltage | VRWM | 250 | V | 3 | |||
| Maximum Reverse Leakage | IR | 1 | uA | @VRWM | 3 | ||
| Maximum Clamping Voltage | VC | 405 | V | @IPP | 3 | ||
| Maximum Reverse Surge Current | IPP | 1.48 | A | 10/1000 µs waveform | 3 | ||
| Peak power dissipation | PPP | 600 | W | 10/1000µs waveform | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3 ms single half sine-wave, unidirectional only | 1 | ||
| Power dissipation on infinite heatsink | PD | 5 | W | TL = 75 °C | 1 | ||
| Maximum instantaneous forward voltage | VF | 5 | V | at 50 A, unidirectional only, VBR>201V | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SMBJ250A - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj250a-etched.step/smbj250a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj250a.step/smbj250a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (4 pp, sha256
3c4e7a572b79a220, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-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).