component
SMAJ188A
Public Made by Adomby adom
Littelfuse TVS, DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 19d ago |
| viewers | 19d ago |
| package.json | 19d ago |
| page.json | 19d ago |
| README.md | 19d ago |
| smaj188a-etched.glb | 19d ago |
| smaj188a-etched.step | 19d ago |
| smaj188a-hero.glb | 19d ago |
| smaj188a-hero.overlay.json | 19d ago |
| smaj188a.glb | 19d ago |
| smaj188a.kicad_mod | 19d ago |
| smaj188a.kicad_sym | 12d ago |
| smaj188a.lbr | 12d ago |
| smaj188a.step | 19d ago |
SMAJ188A
Littelfuse · TVS · DO-214AC(SMA)
SMAJ188A from Littelfuse, in a DO-214AC(SMA). 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AC(SMA) |
| Category | TVS/Fuse/Board Level 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VR | 188 | V | 2 | |||
| Breakdown voltage | VBR | 209 | 231 | V | @ IT 1 mA | 2 | |
| Maximum clamping voltage | VC | 304 | V | @ Ipp 1.4 A | 2 | ||
| Maximum peak pulse current | Ipp | 1.4 | A | 2 | |||
| Maximum reverse leakage current | IR | 1 | µA | @ VR 188 V | 2 | ||
| Peak pulse power dissipation (single die) | PPPM | 400 | W | 10/1000us waveform, TA=25C (Notes 1, 2) | 1 | ||
| Power dissipation on infinite heat sink | PD | 3.3 | W | TL=50C | 1 | ||
| Peak forward surge current | IFSM | 60 | A | 8.3ms single half sine wave, unidirectional only (Note 3) | 1 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | at 25A, unidirectional only; single-die value (Note 4) | 1 | ||
| Operating temperature range | TJ | -65 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -65 | 175 | °C | 1 | ||
| Typical thermal resistance junction to lead | RθJL | 30 | °C/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 120 | °C/W | 1 | |||
| Breakdown voltage temperature coefficient | αT | 0.1 | % | VBR(TJ)=VBR@25C x (1+αT x (TJ-25)) | 1 |
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 | • Matte tin lead-free Plated • Halogen free and RoHS | 1 |
CAD (KiCad official)
- Symbol:
SMAJ188A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
smaj188a-etched.step/smaj188a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj188a.step/smaj188a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
4d9d8ace5b314e94, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).