component
SZ1SMA16AT3G
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), SMA. Pinout cross-checked by two models against the datasheet, 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 | 17d ago |
| viewers | 17d ago |
| package.json | 17d ago |
| page.json | 17d ago |
| README.md | 17d ago |
| sz1sma16at3g-etched.glb | 17d ago |
| sz1sma16at3g-etched.step | 17d ago |
| sz1sma16at3g-hero.glb | 17d ago |
| sz1sma16at3g-hero.overlay.json | 17d ago |
| sz1sma16at3g.glb | 17d ago |
| sz1sma16at3g.kicad_mod | 17d ago |
| sz1sma16at3g.kicad_sym | 17d ago |
| sz1sma16at3g.lbr | 17d ago |
| sz1sma16at3g.step | 17d ago |
SZ1SMA16AT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMA
SZ1SMA16AT3G from Littelfuse, in a 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 | CATHODE | passive | Cathode of the unidirectional TVS, marked by the polarity band on the package; for the SZ1SMA16AT3G the working peak reverse voltage is 16 V and the breakdown voltage VBR is 17.8 V min to 19.7 V max at IT = 1 mA. |
| 2 | ANODE | passive | Anode of the unidirectional TVS, the terminal opposite the polarity band; for the SZ1SMA16AT3G the clamping voltage is 26.0 V at a reverse peak pulse current of 15.4 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SMA |
| 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 | 17.8 | 18.75 | 19.7 | V | @ IT = 1 mA (Note 7), TA = 25°C | 3 |
| Maximum reverse leakage current | IR | 2.5 | µA | @ VRWM | 3 | ||
| Maximum reverse peak pulse current | IPP | 15.4 | A | Surge waveform per Note 8 | 3 | ||
| Typical junction capacitance | C | 715 | pF | Bias 0 V, F = 1.0 MHz, TJ = 25°C (Note 9) | 3 | ||
| Forward voltage | VF | 3.5 | V | @ IF = 30 A, for all types | 2 | ||
| Peak power dissipation | PPK | 400 | W | TL = 25°C, pulse width 1 ms, non-repetitive (Note 1) | 1 | ||
| DC power dissipation (lead) | PD | 1 | W | @ TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| DC power dissipation (ambient) | PD | 0.5 | W | @ TA = 25°C, FR-4 minimum recommended footprint (Note 3) | 1 | ||
| Forward surge current | IFSM | 40 | A | @ TA = 25°C, 1/2 sine wave, PW = 8.3 ms (Note 4) | 1 | ||
| Operating and storage temperature range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Working peak reverse voltage | VRWM | 16 | V | Select so VRWM is equal to or greater than the DC or continuous peak operating voltage (Note 6) | 3 | ||
| Thermal resistance, junction to lead | RθJL | 50 | °C/W | 1 in² square copper pad, FR-4 board (Note 2) | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 250 | °C/W | FR-4 board, Littelfuse minimum recommended footprint (Note 3) | 1 |
CAD (KiCad official)
- Symbol:
SZ1SMA16AT3G - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
sz1sma16at3g-etched.step/sz1sma16at3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz1sma16at3g.step/sz1sma16at3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
0efc269c31859c3d, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).