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SZESD9X3.3ST5G
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onsemi ESD Protection Devices, SOD-923. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZESD9X3.3ST5G
onsemi · ESD Protection Devices · SOD-923
SZESD9X3.3ST5G from onsemi, in a SOD-923. 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 (polarity band) of the unidirectional ESD protection diode, connected to the protected line; VRWM 3.3 V, VBR 5.0 V min at 1.0 mA. |
| 2 | ANODE | passive | Anode of the unidirectional ESD protection diode, connected to ground/return. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOD-923 |
| 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 |
|---|---|---|---|---|---|---|---|
| Working Peak Reverse Voltage | VRWM | 3.3 | V | 2 | |||
| Maximum Reverse Leakage Current | IR | 2.5 | A | @ VRWM | 2 | ||
| Breakdown Voltage | VBR | 5 | V | @ IT = 1.0 mA | 2 | ||
| Forward Voltage | VF | 1.1 | V | @ IF = 10 mA | 2 | ||
| Maximum Peak Pulse Current | IPP | 9.8 | A | 8 x 20 µs, Note 3 | 2 | ||
| Clamping Voltage | VC | 10.4 | V | @ Max IPP (Note 3) | 2 | ||
| Peak Power Dissipation | Ppk | 102 | W | 8 x 20 µs | 2 | ||
| Capacitance | C | 80 | pF | VR = 0, f = 1 MHz | 2 | ||
| IEC 61000-4-2 ESD Contact | -30 | 30 | kV | Contact | 1 | ||
| IEC 61000-4-2 ESD Air | -30 | 30 | kV | Air | 1 | ||
| ESD Voltage Human Body Model | 16 | kV | Per Human Body Model | 1 | |||
| ESD Voltage Machine Model | 400 | V | Per Machine Model | 1 | |||
| Total Power Dissipation | PD | 150 | mW | FR-5 board (Note 1), TA = 25°C | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -55 | 150 | °C | 1 | ||
| Lead Solder Temperature | TL | 260 | °C | Maximum, 10 second duration | 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 | LEAD FINISH: 100% Matte Sn (Tin) MOUNTING POSITION: Any | 1 |
CAD (KiCad official)
- Symbol:
SZESD9X3.3ST5G - Footprint:
Diode_SMD:D_SOD-923 - 3D model: SOD-923 (KiCad packages3D, STEP)
- 3D model files:
szesd9x3-3st5g-etched.step/szesd9x3-3st5g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szesd9x3-3st5g.step/szesd9x3-3st5g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (6 pp, sha256
9edcaf10f631ae61, retrieved 2026-10-23, tier: manufacturer) - 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).
# SZESD9X3.3ST5G
**onsemi** · ESD Protection Devices · SOD-923
SZESD9X3.3ST5G from onsemi, in a SOD-923. 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 (polarity band) of the unidirectional ESD protection diode, connected to the protected line; VRWM 3.3 V, VBR 5.0 V min at 1.0 mA. |
| 2 | ANODE | passive | Anode of the unidirectional ESD protection diode, connected to ground/return. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOD-923 |
| 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 |
|---|---|---|---|---|---|---|---|
| Working Peak Reverse Voltage | VRWM | | | 3.3 | V | | 2 |
| Maximum Reverse Leakage Current | IR | | | 2.5 | A | @ VRWM | 2 |
| Breakdown Voltage | VBR | 5 | | | V | @ IT = 1.0 mA | 2 |
| Forward Voltage | VF | | | 1.1 | V | @ IF = 10 mA | 2 |
| Maximum Peak Pulse Current | IPP | | 9.8 | | A | 8 x 20 µs, Note 3 | 2 |
| Clamping Voltage | VC | | 10.4 | | V | @ Max IPP (Note 3) | 2 |
| Peak Power Dissipation | Ppk | | 102 | | W | 8 x 20 µs | 2 |
| Capacitance | C | | | 80 | pF | VR = 0, f = 1 MHz | 2 |
| IEC 61000-4-2 ESD Contact | | -30 | | 30 | kV | Contact | 1 |
| IEC 61000-4-2 ESD Air | | -30 | | 30 | kV | Air | 1 |
| ESD Voltage Human Body Model | | | | 16 | kV | Per Human Body Model | 1 |
| ESD Voltage Machine Model | | | | 400 | V | Per Machine Model | 1 |
| Total Power Dissipation | PD | | | 150 | mW | FR-5 board (Note 1), TA = 25°C | 1 |
| Junction and Storage Temperature Range | TJ, Tstg | -55 | | 150 | °C | | 1 |
| Lead Solder Temperature | TL | | | 260 | °C | Maximum, 10 second duration | 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 | LEAD FINISH: 100% Matte Sn (Tin) MOUNTING POSITION: Any | 1 |
## CAD (KiCad official)
- Symbol: `SZESD9X3.3ST5G`
- Footprint: `Diode_SMD:D_SOD-923`
- 3D model: SOD-923 (KiCad packages3D, STEP)
- 3D model files: `szesd9x3-3st5g-etched.step` / `szesd9x3-3st5g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `szesd9x3-3st5g.step` / `szesd9x3-3st5g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/szesd9x3.3st5-d.pdf) (6 pp, sha256 `9edcaf10f631ae61`, retrieved 2026-10-23, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/szesd9x3-3st5g-datasheet.pdf)