# CESD5V0K5

**Changjing** · ESD And Surge Protection (TVS/ESD) · SOT-363

CESD5V0K5 from Changjing, in a SOT-363. 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 | ESD-protected line 1 (uni-directional TVS to GND, VRWM 5 V, clamping 12 V max at IPP=5 A); pin 1 is marked by the solid dot. |
| 2 | GND | power_in | Common ground/anode node of all five protection diodes; ESD ratings are specified per channel from I/O to GND. |
| 3 | I/O2 | passive | ESD-protected line 2 (uni-directional TVS to GND, VRWM 5 V, clamping 12 V max at IPP=5 A). |
| 4 | I/O3 | passive | ESD-protected line 3 (uni-directional TVS to GND, VRWM 5 V, clamping 12 V max at IPP=5 A). |
| 5 | I/O4 | passive | ESD-protected line 4 (uni-directional TVS to GND, VRWM 5 V, clamping 12 V max at IPP=5 A). |
| 6 | I/O5 | passive | ESD-protected line 5 (uni-directional TVS to GND, VRWM 5 V, clamping 12 V max at IPP=5 A). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-363 |
| Category | Circuit Protection |
| Pins | 6 |

## 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 | V(BR) | 6 | 7.2 |  | V | IT=1mA | 3 |
| Reverse leakage current | IR |  |  | 5 | μA | VRWM=5V | 3 |
| Forward voltage | VF |  |  | 0.9 | V | IF=10mA | 3 |
| Clamping voltage | VC |  |  | 12 | V | IPP=5A, 8/20μs exponential decay waveform per IEC61000-4-5 (note 2) | 3 |
| Junction capacitance | CJ |  | 30 |  | pF | VR=0V, f=1MHz | 3 |
| Reverse stand off voltage | VRWM |  |  | 5 | V |  | 3 |
| IEC 61000-4-2 ESD voltage, air model | VESD | -25 |  | 25 | kV | Air model; ten non-repetitive ESD pulses per channel (I/O to GND) | 2 |
| IEC 61000-4-2 ESD voltage, contact model | VESD | -25 |  | 25 | kV | Contact model; ten non-repetitive ESD pulses per channel (I/O to GND) | 2 |
| ESD voltage per human body model (JESD22-A114-B) |  | -16 |  | 16 |  | JESD22-A114-B | 2 |
| ESD voltage machine model |  | -0.4 |  | 0.4 |  |  | 2 |
| Peak pulse power | PPP |  |  | 60 | W | Non-repetitive 8/20μs exponential decay waveform per IEC61000-4-5 (note 2) | 2 |
| Peak pulse current | IPP |  |  | 5 | A | Non-repetitive 8/20μs exponential decay waveform per IEC61000-4-5 (note 2) | 2 |
| Lead solder temperature, maximum | TL |  |  | 260 | ℃ | 10 second duration | 2 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 2 |
| Storage temperature range | Tstg | -55 |  | 150 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `CESD5V0K5`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `cesd5v0k5-etched.step` / `cesd5v0k5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cesd5v0k5.step` / `cesd5v0k5.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202861093339136) (6 pp, sha256 `ba0aae4d58542f5e`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/cesd5v0k5-datasheet.pdf)