component
SZ1SMB60AT3G
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Littelfuse ESD And Surge Protection (TVS/ESD), SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZ1SMB60AT3G
Littelfuse · ESD And Surge Protection (TVS/ESD) · SMB
SZ1SMB60AT3G 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 of the uni-directional TVS, identified by the color band on the package; this MPN (SZ1SMB60AT3G) is rated 60 V working peak reverse voltage (VRWM) and 600 W peak power at 1.0 ms. |
| 2 | Anode | passive | Anode of the uni-directional TVS, opposite the color-band cathode; the device has a maximum clamping voltage of 96.8 V at 6.2 A IPP for this 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 (Min) | VBR | 66.7 | V | IT = 1.0 mA (Note 7) | 3 | ||
| Breakdown Voltage (Nom) | VBR | 70.2 | V | IT = 1.0 mA (Note 7) | 3 | ||
| Breakdown Voltage (Max) | VBR | 73.7 | V | IT = 1.0 mA (Note 7) | 3 | ||
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VRWM = 60 V | 3 | ||
| Forward Voltage | VF | 3.5 | V | IF = 30 A (Note 5), uni-directional | 2 | ||
| Peak Power Dissipation | PPK | 600 | W | TL = 25°C, pulse width = 1 ms (Note 1) | 1 | ||
| DC Power Dissipation @ TL = 75°C (zero lead length) | PD | 3 | W | TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| DC Power Dissipation @ TA = 25°C | PD | 0.55 | W | TA = 25°C (Note 3) | 1 | ||
| Forward Surge Current | IFSM | 100 | A | TA = 25°C, 1/2 sine wave, PW = 8.3 ms (Note 4), uni-directional only | 1 | ||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Clamping Voltage | VC | 96.8 | V | @ IPP = 6.2 A (Note 8) | 3 | ||
| Thermal Resistance, Junction-to-Lead | RθJL | 40 | °C/W | Measured zero lead length (Note 2) | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 226 | °C/W | FR-4 board, Littelfuse minimum recommended footprint (Note 3) | 1 | ||
| Derate Above 75°C (DC power, lead) | PD | 25 | mW/°C | Above TL = 75°C | 1 | ||
| Derate Above 25°C (DC power, ambient) | PD | 4.4 | mW/°C | Above TA = 25°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 | and the terminal finish material is tin(Sn) (IPC/ | 1 |
CAD (KiCad official)
- Symbol:
SZ1SMB60AT3G - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
sz1smb60at3g-etched.step/sz1smb60at3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz1smb60at3g.step/sz1smb60at3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
b867ff8d1ae59140, retrieved 2026-10-16, 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).
# SZ1SMB60AT3G
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · SMB
SZ1SMB60AT3G 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 of the uni-directional TVS, identified by the color band on the package; this MPN (SZ1SMB60AT3G) is rated 60 V working peak reverse voltage (VRWM) and 600 W peak power at 1.0 ms. |
| 2 | Anode | passive | Anode of the uni-directional TVS, opposite the color-band cathode; the device has a maximum clamping voltage of 96.8 V at 6.2 A IPP for this 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 (Min) | VBR | 66.7 | | | V | IT = 1.0 mA (Note 7) | 3 |
| Breakdown Voltage (Nom) | VBR | | 70.2 | | V | IT = 1.0 mA (Note 7) | 3 |
| Breakdown Voltage (Max) | VBR | | | 73.7 | V | IT = 1.0 mA (Note 7) | 3 |
| Maximum Reverse Leakage Current | IR | | | 5 | µA | @ VRWM = 60 V | 3 |
| Forward Voltage | VF | | | 3.5 | V | IF = 30 A (Note 5), uni-directional | 2 |
| Peak Power Dissipation | PPK | | | 600 | W | TL = 25°C, pulse width = 1 ms (Note 1) | 1 |
| DC Power Dissipation @ TL = 75°C (zero lead length) | PD | | | 3 | W | TL = 75°C, measured zero lead length (Note 2) | 1 |
| DC Power Dissipation @ TA = 25°C | PD | | | 0.55 | W | TA = 25°C (Note 3) | 1 |
| Forward Surge Current | IFSM | | | 100 | A | TA = 25°C, 1/2 sine wave, PW = 8.3 ms (Note 4), uni-directional only | 1 |
| Operating and Storage Temperature Range | TJ, Tstg | -65 | | 150 | °C | | 1 |
| Clamping Voltage | VC | | 96.8 | | V | @ IPP = 6.2 A (Note 8) | 3 |
| Thermal Resistance, Junction-to-Lead | RθJL | | 40 | | °C/W | Measured zero lead length (Note 2) | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA | | 226 | | °C/W | FR-4 board, Littelfuse minimum recommended footprint (Note 3) | 1 |
| Derate Above 75°C (DC power, lead) | PD | | 25 | | mW/°C | Above TL = 75°C | 1 |
| Derate Above 25°C (DC power, ambient) | PD | | 4.4 | | mW/°C | Above TA = 25°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 | and the terminal finish material is tin(Sn) (IPC/ | 1 |
## CAD (KiCad official)
- Symbol: `SZ1SMB60AT3G`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `sz1smb60at3g-etched.step` / `sz1smb60at3g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sz1smb60at3g.step` / `sz1smb60at3g.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/8588939848304091136) (7 pp, sha256 `b867ff8d1ae59140`, 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/sz1smb60at3g-datasheet.pdf)