component
SZSMF36AT1G
Public Made by Adomby adom
Littelfuse TVS, SOD-123FL. 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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Contents
README
markdownSZSMF36AT1G
Littelfuse · TVS · SOD-123FL
SZSMF36AT1G from Littelfuse, in a SOD-123FL. 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 uni-directional TVS diode, marked by the polarity band; connect to the positive/protected line, with VRWM 36 V and VC max 58.1 V at IPP 3.4 A for the SZSMF36A. |
| 2 | Anode | passive | Anode of the uni-directional TVS diode; connect to ground/return, with the device rated for 200 W peak power (10/1000 µs). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SOD-123FL |
| Category | TVS/Fuse/Board Level 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 mA, TA = 25°C | 2 |
| Working Peak Reverse Voltage | VRWM | 36 | V | 2 | |||
| Maximum Reverse Leakage Current | IR | 1 | µA | @ VRWM | 2 | ||
| Maximum Clamping Voltage | VC | 58.1 | V | @ IPP | 2 | ||
| Maximum Reverse Peak Pulse Current | IPP | 3.4 | A | Surge waveform per Figure 2 | 2 | ||
| Forward Voltage | VF | 3.5 | V | IF = 12 A, TA = 25°C | 2 | ||
| Peak Power Dissipation 10/1000 µs | PPK | 200 | W | PW-10/1000 µs, TA = 25°C | 1 | ||
| Peak Power Dissipation 8/20 µs | PPK | 1000 | W | TA = 25°C, PW-8/20 µs | 1 | ||
| DC Power Dissipation | PD | 385 | mW | TA = 25°C, minimum pad, FR-4 | 1 | ||
| Derate Above 25°C | 4 | mW/°C | Above TA = 25°C | 1 | |||
| Thermal Resistance Junction-to-Ambient | RθJA | 325 | °C/W | Recommended minimum pad, FR-4 | 1 | ||
| Thermal Resistance Junction-to-Lead | RθJL | 26 | °C/W | Recommended minimum pad, FR-4 | 1 | ||
| Operating and Storage Temperature Range | TJ, Tstg | -55 | 150 | °C | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Terminal Matte Tin-plated leads, Solderable per JESD22-B102 | 4 |
CAD (KiCad official)
- Symbol:
SZSMF36AT1G - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
szsmf36at1g-etched.step/szsmf36at1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szsmf36at1g.step/szsmf36at1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
c7f007045647a940, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).