component
SZESD9R3.3ST5G
Public Made by Adomby adom
onsemi TVS, SOD-923. 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
markdownSZESD9R3.3ST5G
onsemi · TVS · SOD-923
SZESD9R3.3ST5G 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 uni-directional ESD protection diode, connected to the protected line, with VRWM 3.3 V and leakage under 1 nA at 1 V from 0°C to 50°C. |
| 2 | ANODE | passive | Anode of the uni-directional ESD protection diode, normally tied to ground, which clamps IEC61000-4-2 ESD events with a maximum VC of 7.8 V at IPP = 1 A. |
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 | |||
| Reverse Leakage Current | IR | 1 | nA | @ 1 V, TA = 0°C to 50°C (Note 4) | 2 | ||
| Breakdown Voltage | VBR | 4.8 | V | @ IT = 1.0 mA (Note 2) | 2 | ||
| Capacitance | C | 0.5 | 0.9 | pF | VR = 0, f = 1.0 MHz | 2 | |
| Clamping Voltage | VC | 7.8 | V | @ IPP = 1 A (Note 5) | 2 | ||
| Forward Voltage | VF | 1 | V | IF = 10 mA | 2 | ||
| IEC 61000-4-2 ESD Contact | -10 | 10 | kV | Contact | 1 | ||
| IEC 61000-4-2 ESD Air | -15 | 15 | kV | Air | 1 | ||
| ESD HBM | -16 | 16 | kV | HBM | 1 | ||
| Total Power Dissipation | PD | 150 | mW | FR-5 board (Note 1), TA = 25°C | 1 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 1 | ||
| Junction Temperature Range | TJ | -55 | 125 | °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:
SZESD9R3.3ST5G - Footprint:
Diode_SMD:D_SOD-923 - 3D model: SOD-923 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (5 pp, sha256
ae69898775e82f3b, retrieved 2026-10-31, 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).