TPSMB250A
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA(SMBJ). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
| Name | Last updated |
|---|---|
| docs | 17d ago |
| viewers | 17d ago |
| package.json | 17d ago |
| page.json | 17d ago |
| README.md | 17d ago |
| tpsmb250a-etched.glb | 17d ago |
| tpsmb250a-etched.step | 17d ago |
| tpsmb250a-hero.glb | 17d ago |
| tpsmb250a-hero.overlay.json | 17d ago |
| tpsmb250a.glb | 17d ago |
| tpsmb250a.kicad_mod | 17d ago |
| tpsmb250a.kicad_sym | 17d ago |
| tpsmb250a.lbr | 17d ago |
| tpsmb250a.step | 17d ago |
TPSMB250A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)
TPSMB250A from Littelfuse, in a DO-214AA(SMBJ). 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA(SMBJ) |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation | PPPM | 600 | W | 10/1000µs waveform (Fig.1)(Note 1), (Note 2) | 1 | ||
| Power Dissipation on infinite heat sink | PM(AV) | 5 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3ms single half sine wave (Note 3) | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 50A, unidirectional only (Note 4); VF < 3.5V for part number with VBR < 300V | 1 | ||
| Operating Junction Temperature Range (VBR > 91V) | TJ | -65 | 150 | °C | Operating Junction Temperature Range (VBR > 91V) | 1 | |
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 20 | °C/W | Typical | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | Typical | 1 | ||
| Reverse Stand-off Voltage (TPSMB250A, uni-directional) | VR | 214 | V | 2 | |||
| Breakdown Voltage (TPSMB250A, uni-directional) | VBR | 237 | 263 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage (TPSMB250A) | VC | 344 | V | @ Ipp = 1.8 A | 2 | ||
| Maximum Peak Pulse Current (TPSMB250A) | Ipp | 1.8 | A | 2 | |||
| Maximum Reverse Leakage Current (TPSMB250A) | IR | 1 | µA | @ VR = 214 V | 2 | ||
| Maximum Temperature coefficient of VBR (TPSMB250A) | 0.11 | %/C | 2 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | 260°C/10 seconds at terminals ■ Matte tin lead-free plated | 1 |
CAD (KiCad official)
- Symbol:
TPSMB250A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files:
tpsmb250a-etched.step/tpsmb250a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb250a.step/tpsmb250a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
8cc50e1afb0bea8d, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).