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SZ1SMB36AT3G
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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSZ1SMB36AT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMB
SZ1SMB36AT3G 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, marked by the color band; it is the terminal that goes positive during a clamped positive transient, and the device working peak reverse voltage for SZ1SMB36AT3G is 36 V. |
| 2 | Anode | passive | Anode terminal of the uni-directional TVS, which clamps transients to a maximum of 58.1 V at a 10.3 A peak pulse current for this 36 V 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 | 40 | 42.1 | 44.2 | V | @ IT = 1.0 mA | 3 |
| Maximum reverse leakage current | IR | 5 | µA | @ VRWM | 3 | ||
| Clamping voltage | VC | 58.1 | V | @ IPP = 10.3 A | 3 | ||
| Maximum reverse peak pulse current | IPP | 10.3 | A | 3 | |||
| Working peak reverse voltage | VRWM | 36 | V | 3 | |||
| Typical junction capacitance | C | 470 | pF | Bias Voltage = 0 V, F = 1 MHz, TJ = 25°C | 3 | ||
| Peak power dissipation | PPK | 600 | W | TL = 25°C, Pulse Width = 1 ms (10/1000 µs, non-repetitive) | 1 | ||
| DC power dissipation at TL = 75°C | PD | 3 | W | TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| Derate above 75°C | 40 | mW/°C | Above TL = 75°C | 1 | |||
| Thermal resistance junction-to-lead | RθJL | 25 | °C/W | Junction-to-lead | 1 | ||
| DC power dissipation at TA = 25°C | PD | 0.55 | W | TA = 25°C, FR-4 board, Littelfuse minimum recommended footprint (Note 3) | 1 | ||
| Derate above 25°C | 4.4 | mW/°C | Above TA = 25°C | 1 | |||
| Thermal resistance junction-to-ambient | RθJA | 226 | °C/W | Junction-to-ambient | 1 | ||
| Forward surge current | IFSM | 100 | A | TA = 25°C, 1/2 sine wave, PW = 8.3 ms (Note 4, unidirectional only) | 1 | ||
| Operating and storage temperature range | TJ, Tstg | -65 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SZ1SMB36AT3G - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
sz1smb36at3g-etched.step/sz1smb36at3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz1smb36at3g.step/sz1smb36at3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
b867ff8d1ae59140, 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).