component
SZP6SMB91AT3G
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), SMB. 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 | 23d ago |
| viewers | 1d ago |
| package.json | 23d ago |
| page.json | 23d ago |
| README.md | 23d ago |
| szp6smb91at3g-etched.glb | 23d ago |
| szp6smb91at3g-etched.step | 23d ago |
| szp6smb91at3g-hero.glb | 23d ago |
| szp6smb91at3g-hero.overlay.json | 23d ago |
| szp6smb91at3g.glb | 23d ago |
| szp6smb91at3g.kicad_mod | 23d ago |
| szp6smb91at3g.kicad_sym | 1d ago |
| szp6smb91at3g.lbr | 1d ago |
| szp6smb91at3g.step | 23d ago |
SZP6SMB91AT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMB
SZP6SMB91AT3G from Littelfuse, in a SMB. 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 terminal of the uni-directional TVS; the color band on the package denotes the cathode, and the device is rated for 600 W peak power at 1 ms. |
| 2 | Anode | passive | Anode terminal of the uni-directional TVS, opposite the cathode band, with a maximum forward voltage of 3.5 V at 30 A IF per the datasheet. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SMB |
| 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 (unidirectional 91 V, minimum) | VBR | 86.5 | V | @ IT = 1 mA; VBR measured at 25°C (Note 7) | 3 | ||
| Breakdown voltage (unidirectional 91 V, maximum) | VBR | 95.5 | V | @ IT = 1 mA; VBR measured at 25°C (Note 7) | 3 | ||
| Breakdown voltage (unidirectional 91 V, nominal) | VBR | 91 | V | @ IT = 1 mA; VBR measured at 25°C (Note 7) | 3 | ||
| Peak power dissipation | PPK | 600 | W | TL = 25°C, pulse width = 1 ms (Note 1: 10/1000 µs, non-repetitive) | 1 | ||
| DC power dissipation (lead-referenced) | PD | 3 | W | TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| Derating of DC power dissipation (lead-referenced) | 40 | mW/°C | Derate above TL = 75°C | 1 | |||
| DC power dissipation (ambient) | PD | 0.55 | W | TA = 25°C (Note 3, FR-4 minimum recommended footprint) | 1 | ||
| Derating of DC power dissipation (ambient) | 4.4 | mW/°C | Derate above TA = 25°C | 1 | |||
| Forward surge current | IFSM | 100 | A | TA = 25°C; 1/2 sine wave PW = 8.3 ms; unidirectional only (Note 4) | 1 | ||
| Operating and storage temperature range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Thermal resistance, junction-to-lead | RƟJL | 25 | °C/W | Junction-to-lead, measured zero lead length (Note 2) | 1 | ||
| Thermal resistance, junction-to-ambient | RƟJA | 226 | °C/W | Junction-to-ambient (Note 3) | 1 |
CAD (KiCad official)
- Symbol:
SZP6SMB91AT3G - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
szp6smb91at3g-etched.step/szp6smb91at3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szp6smb91at3g.step/szp6smb91at3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
baf561fbcd6cd66c, retrieved 2026-10-14, 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).