component
SZP6SMB30AT3G
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.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownSZP6SMB30AT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMB
SZP6SMB30AT3G 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 this unidirectional TVS, identified by the color band on the package; for the 30A part the datasheet gives VRWM 25.6 V and breakdown voltage 28.5 V min to 31.5 V max at 1 mA test current. |
| 2 | Anode | passive | Anode terminal of this unidirectional TVS, which clamps to 41.4 V max at 14.4 A peak pulse current for the 30A part. |
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 (VBR), min | VBR | 28.5 | V | @ IT = 1 mA (Note 7) | 3 | ||
| Breakdown voltage (VBR), nominal | VBR | 30 | V | @ IT = 1 mA (Note 7) | 3 | ||
| Breakdown voltage (VBR), max | VBR | 31.5 | V | @ IT = 1 mA (Note 7) | 3 | ||
| Maximum reverse leakage current | IR | 5 | µA | @ VRWM = 25.6 V | 3 | ||
| Clamping voltage | VC | 41.4 | V | @ IPP = 14.4 A (Note 8) | 3 | ||
| Forward voltage | VF | 3.5 | V | @ IF = 30 A (Note 5) | 2 | ||
| Peak power dissipation | PPK | 600 | W | TL = 25°C, pulse width = 1 ms (Note 1) | 1 | ||
| DC power dissipation at TL | PD | 3 | W | @ TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| DC power dissipation at TA | PD | 0.55 | W | @ TA = 25°C (Note 3) | 1 | ||
| Forward surge current | IFSM | 100 | A | @ TA = 25°C, 1/2 sine wave PW = 8.3 ms (Note 4), uni-directional only | 1 | ||
| Operating and storage temperature range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Derate power dissipation above TL | PD | 40 | mW/°C | Derate above 75°C | 1 | ||
| Derate power dissipation above TA | PD | 4.4 | mW/°C | Derate above 25°C | 1 | ||
| Thermal resistance junction-to-lead | RθJL | 25 | °C/W | Measured zero lead length (Note 2) | 1 | ||
| Thermal resistance junction-to-ambient | RθJA | 226 | °C/W | FR-4 board, Littelfuse minimum recommended footprint (Note 3) | 1 | ||
| Temperature coefficient of VBR | 0.097 | %/°C | 3 | ||||
| Junction capacitance | C | 635 | pF | Bias voltage 0 V, f = 1 MHz, TJ = 25°C (Note 9) | 3 |
CAD (KiCad official)
- Symbol:
SZP6SMB30AT3G - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
szp6smb30at3g-etched.step/szp6smb30at3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szp6smb30at3g.step/szp6smb30at3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
baf561fbcd6cd66c, retrieved 2026-10-15, 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).