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SZ1SMB36CAT3G
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
markdownSZ1SMB36CAT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMB
SZ1SMB36CAT3G 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 | Terminal 1 of the non-polar bi-directional SZ1SMB36CAT3G, labeled Cathode on the package drawing; the device has VRWM of 36 V and a breakdown voltage VBR of 40.0 V min to 44.2 V max at IT = 1.0 mA. |
| 2 | Anode | passive | Terminal 2 of the non-polar bi-directional SZ1SMB36CAT3G, labeled Anode on the package drawing; the device has a maximum clamping voltage VC of 58.1 V at IPP = 10.3 A. |
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 (bi-directional, SZ1SMB36CAT3G) | VBR | 40 | 42.11 | 44.2 | V | @ IT = 1.0 mA (Note 7) | 4 |
| Peak Power Dissipation | PPK | 600 | W | TL = 25°C, Pulse Width = 1 ms (Note 1) | 1 | ||
| DC Power Dissipation @ TL = 75°C, measured zero lead length | PD | 3 | W | TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| Derate above 75°C (zero lead length) | 25 | mW/°C | Derate above 75°C | 1 | |||
| Thermal Resistance Junction-to-Lead | RƟJL | 40 | °C/W | 1 | |||
| DC Power Dissipation @ TA = 25°C | PD | 0.55 | W | TA = 25°C (Note 3) | 1 | ||
| Derate above 25°C (ambient) | 4.4 | mW/°C | Derate above 25°C | 1 | |||
| Thermal Resistance Junction-to-Ambient | RƟJA | 226 | °C/W | 1 | |||
| Forward Surge Current | IFSM | 100 | A | TA = 25°C (Note 4) | 1 | ||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SZ1SMB36CAT3G - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
sz1smb36cat3g-etched.step/sz1smb36cat3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz1smb36cat3g.step/sz1smb36cat3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
b867ff8d1ae59140, retrieved 2026-10-15, 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).