component
ESD1202EQ
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech ESD And Surge Protection (TVS/ESD), SOT-23. 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
markdownESD1202EQ
Yangzhou Yangjie Elec Tech · ESD And Surge Protection (TVS/ESD) · SOT-23
ESD1202EQ from Yangzhou Yangjie Elec Tech, in a SOT-23. 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 | I/O1 | passive | Protected line 1 (diode cathode), uni-directional protection to ground with VRWM 12V, VBR 13.1V min at 1mA, and ±30kV IEC61000-4-2 contact/air. |
| 2 | I/O2 | passive | Protected line 2 (diode cathode), uni-directional protection to ground with VRWM 12V, VBR 13.1V min at 1mA, and ±30kV IEC61000-4-2 contact/air. |
| 3 | GND | power_in | Common anode of both diodes (top lead in the package drawing), connected to ground as the reference for the I/O lines. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak pulse power | Ppk | 280 | W | tp = 8/20μs | 2 | ||
| ESD IEC61000-4-2 air discharge | VESD | -30 | 30 | KV | IEC61000-4-2 air discharge | 2 | |
| ESD IEC61000-4-2 contact discharge | VESD | -30 | 30 | KV | IEC61000-4-2 contact discharge | 2 | |
| Junction temperature | TJ | -55 | 150 | ℃ | 2 | ||
| Storage temperature | TSTG | -55 | 150 | ℃ | 2 | ||
| Reverse Standoff Voltage | VRWM | 12 | V | IR≤1μA | 2 | ||
| Reverse breakdown voltage | VBR | 13.1 | 16.5 | V | IBR = 1mA | 2 | |
| Reverse leakage current | IR | 1 | μA | VRWM = 12V | 2 | ||
| Forward Voltage | VF | 1.1 | V | IF=10mA | 2 | ||
| Clamping voltage | VC | 18.5 | V | IPP = 1A, tp = 8/20μs | 2 | ||
| Clamping voltage | VC | 28 | V | IPP = 10A, tp = 8/20μs | 2 | ||
| Dynamic resistance | RDYN | 0.18 | Ω | TLP, tp=100ns, I/O to Ground | 2 | ||
| Peak Pulse Current | IPP | 10 | A | tp = 8/20μs | 2 | ||
| Junction capacitance | CJ | 55 | 70 | pF | VR = 0V, f = 1MHz | 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 |
|---|---|---|---|---|
| housing | black | 3. Body color: Black | 4 | |
| contacts | tin | ● Lead Finish: Matte Tin ● Case Material: “Green” Molding Compound | 1 |
CAD (KiCad official)
- Symbol:
ESD1202EQ - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
esd1202eq-etched.step/esd1202eq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esd1202eq.step/esd1202eq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (5 pp, sha256
5a1ff1c257ea5019, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).