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SZ1.5SMC36AT3G
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZ1.5SMC36AT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMC
SZ1.5SMC36AT3G from Littelfuse, in a SMC. 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 unidirectional TVS, marked by the color band on the package and the cathode mark on the tape; for the 36 V part the device clamps to 49.9 V max at 30 A IPP. |
| 2 | Anode | passive | Anode terminal of the unidirectional TVS; for the SZ1.5SMC36AT3G the working peak reverse voltage VRWM is 30.8 V and the breakdown voltage is 34.2 V min to 37.8 V max at 1 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SMC |
| 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), test current IT = 1 mA | VBR | 34.2 | 36 | 37.8 | V | @ IT = 1 mA, TA = 25°C (Note 7) | 2 |
| Clamping Voltage | VC | 49.9 | V | @ IPP = 30 A | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VRWM = 30.8 V | 2 | ||
| Maximum Reverse Peak Pulse Current | IPP | 30 | A | 2 | |||
| Forward Voltage (unidirectional) | VF | 3.5 | V | @ IF = 100 A | 2 | ||
| Peak Power Dissipation | PPK | 1500 | W | TL = 25°C, pulse width = 1 ms (Note 1) | 1 | ||
| DC Power Dissipation (lead) | PD | 4 | W | @ TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| DC Power Dissipation (ambient) | PD | 0.75 | W | @ TA = 25°C (Note 3) | 1 | ||
| Forward Surge Current | IFSM | 200 | A | @ TA = 25°C, 1/2 sine wave PW = 8.3 ms (Note 4) | 1 | ||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Breakdown Voltage Temperature Coefficient | 0.099 | %/°C | 2 | ||||
| Derating Above 75°C (DC power, lead) | 54.6 | mW/°C | derate above TL = 75°C | 1 | |||
| Thermal Resistance, Junction-to-Lead | RθJL | 18.3 | °C/W | junction-to-lead | 1 | ||
| Derating Above 25°C (DC power, ambient) | 6.1 | mW/°C | derate above TA = 25°C | 1 | |||
| Thermal Resistance, Junction-to-Ambient | RθJA | 165 | °C/W | junction-to-ambient, FR-4 minimum recommended footprint (Note 3) | 1 |
CAD (KiCad official)
- Symbol:
SZ1.5SMC36AT3G - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
sz1-5smc36at3g-etched.step/sz1-5smc36at3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz1-5smc36at3g.step/sz1-5smc36at3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
c2c04b53fefd210a, 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).
# SZ1.5SMC36AT3G
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · SMC
SZ1.5SMC36AT3G from Littelfuse, in a SMC. 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 unidirectional TVS, marked by the color band on the package and the cathode mark on the tape; for the 36 V part the device clamps to 49.9 V max at 30 A IPP. |
| 2 | Anode | passive | Anode terminal of the unidirectional TVS; for the SZ1.5SMC36AT3G the working peak reverse voltage VRWM is 30.8 V and the breakdown voltage is 34.2 V min to 37.8 V max at 1 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SMC |
| 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), test current IT = 1 mA | VBR | 34.2 | 36 | 37.8 | V | @ IT = 1 mA, TA = 25°C (Note 7) | 2 |
| Clamping Voltage | VC | | | 49.9 | V | @ IPP = 30 A | 2 |
| Maximum Reverse Leakage Current | IR | | | 5 | µA | @ VRWM = 30.8 V | 2 |
| Maximum Reverse Peak Pulse Current | IPP | | | 30 | A | | 2 |
| Forward Voltage (unidirectional) | VF | | | 3.5 | V | @ IF = 100 A | 2 |
| Peak Power Dissipation | PPK | | | 1500 | W | TL = 25°C, pulse width = 1 ms (Note 1) | 1 |
| DC Power Dissipation (lead) | PD | | | 4 | W | @ TL = 75°C, measured zero lead length (Note 2) | 1 |
| DC Power Dissipation (ambient) | PD | | | 0.75 | W | @ TA = 25°C (Note 3) | 1 |
| Forward Surge Current | IFSM | | | 200 | A | @ TA = 25°C, 1/2 sine wave PW = 8.3 ms (Note 4) | 1 |
| Operating and Storage Temperature Range | TJ, Tstg | -65 | | 150 | °C | | 1 |
| Breakdown Voltage Temperature Coefficient | | | 0.099 | | %/°C | | 2 |
| Derating Above 75°C (DC power, lead) | | | 54.6 | | mW/°C | derate above TL = 75°C | 1 |
| Thermal Resistance, Junction-to-Lead | RθJL | | 18.3 | | °C/W | junction-to-lead | 1 |
| Derating Above 25°C (DC power, ambient) | | | 6.1 | | mW/°C | derate above TA = 25°C | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA | | 165 | | °C/W | junction-to-ambient, FR-4 minimum recommended footprint (Note 3) | 1 |
## CAD (KiCad official)
- Symbol: `SZ1.5SMC36AT3G`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `sz1-5smc36at3g-etched.step` / `sz1-5smc36at3g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sz1-5smc36at3g.step` / `sz1-5smc36at3g.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/8588921687283290112) (5 pp, sha256 `c2c04b53fefd210a`, retrieved 2026-10-15, 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/sz1-5smc36at3g-datasheet.pdf)