component
SZSMF13AT1G
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Littelfuse ESD And Surge Protection (TVS/ESD), SOD-123FL. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZSMF13AT1G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SOD-123FL
SZSMF13AT1G 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 terminal of the uni-directional TVS, marked by the polarity band; the datasheet gives no pin-specific electrical limits. |
| 2 | Anode | passive | Anode terminal of the uni-directional TVS Zener clamp; the datasheet gives no pin-specific electrical limits. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SOD-123FL |
| 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 | 14.4 | 15.15 | 15.9 | V | @ IT = 1 mA (Note 6) | 2 |
| Clamping voltage | VC | 21.5 | V | @ IPP = 9.3 A (Note 7) | 2 | ||
| Maximum reverse leakage current | IR | 1 | µA | @ VRWM = 13 V | 2 | ||
| Maximum reverse peak pulse current | IPP | 9.3 | A | Surge current per Figure 2, derate per Figure 3 (Note 7) | 2 | ||
| Forward voltage | VF | 3.5 | V | IF = 12 A (Note 4) | 2 | ||
| Peak pulse dissipation (10/1000 µs) | PPK | 200 | W | PW = 10/1000 µs (Note 1) | 1 | ||
| Peak pulse dissipation (8/20 µs) | PPK | 1000 | W | TA = 25°C, PW = 8/20 µs (Note 2) | 1 | ||
| DC power dissipation | PD | 385 | mW | TA = 25°C (Note 3) | 1 | ||
| Derate above 25°C | PD | 4 | mW/°C | Above TA = 25°C | 1 | ||
| Thermal resistance, junction-to-ambient | RθJA | 325 | °C/W | Note 3 (recommended minimum pad size, DC board FR-4) | 1 | ||
| Thermal resistance, junction-to-lead | RθJL | 26 | °C/W | Note 3 | 1 | ||
| Operating and storage temperature range | TJ, Tstg | -55 | 150 | °C | 1 | ||
| Working peak reverse voltage | VRWM | 13 | V | Stand-off voltage for SZSMF13AT1G (Note 5) | 2 |
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:
SZSMF13AT1G - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
szsmf13at1g-etched.step/szsmf13at1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szsmf13at1g.step/szsmf13at1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
c7f007045647a940, retrieved 2026-10-16, 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).
# SZSMF13AT1G
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · SOD-123FL
SZSMF13AT1G 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 terminal of the uni-directional TVS, marked by the polarity band; the datasheet gives no pin-specific electrical limits. |
| 2 | Anode | passive | Anode terminal of the uni-directional TVS Zener clamp; the datasheet gives no pin-specific electrical limits. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SOD-123FL |
| 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 | 14.4 | 15.15 | 15.9 | V | @ IT = 1 mA (Note 6) | 2 |
| Clamping voltage | VC | | | 21.5 | V | @ IPP = 9.3 A (Note 7) | 2 |
| Maximum reverse leakage current | IR | | | 1 | µA | @ VRWM = 13 V | 2 |
| Maximum reverse peak pulse current | IPP | | | 9.3 | A | Surge current per Figure 2, derate per Figure 3 (Note 7) | 2 |
| Forward voltage | VF | | | 3.5 | V | IF = 12 A (Note 4) | 2 |
| Peak pulse dissipation (10/1000 µs) | PPK | | | 200 | W | PW = 10/1000 µs (Note 1) | 1 |
| Peak pulse dissipation (8/20 µs) | PPK | | | 1000 | W | TA = 25°C, PW = 8/20 µs (Note 2) | 1 |
| DC power dissipation | PD | | | 385 | mW | TA = 25°C (Note 3) | 1 |
| Derate above 25°C | PD | | 4 | | mW/°C | Above TA = 25°C | 1 |
| Thermal resistance, junction-to-ambient | RθJA | | | 325 | °C/W | Note 3 (recommended minimum pad size, DC board FR-4) | 1 |
| Thermal resistance, junction-to-lead | RθJL | | | 26 | °C/W | Note 3 | 1 |
| Operating and storage temperature range | TJ, Tstg | -55 | | 150 | °C | | 1 |
| Working peak reverse voltage | VRWM | | 13 | | V | Stand-off voltage for SZSMF13AT1G (Note 5) | 2 |
## 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: `SZSMF13AT1G`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `szsmf13at1g-etched.step` / `szsmf13at1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `szsmf13at1g.step` / `szsmf13at1g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940772212793344) (6 pp, sha256 `c7f007045647a940`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/szsmf13at1g-datasheet.pdf)