# ESDBL3V3D5

**Changjing** · ESD Protection Devices · SOD-523

ESDBL3V3D5 from Changjing, in a SOD-523. 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOD-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | V(BR) | 4 |  | 6 | V | IT=1mA | 3 |
| Reverse leakage current | IR |  |  | 0.4 | μA | VRWM=3.3V | 3 |
| Clamping voltage | VC |  |  | 10 | V | IPP=7A, 8/20μs exponential decay per IEC61000-4-5 (note 2) | 3 |
| Junction capacitance | CJ |  | 15 | 20 | pF | VR=0V,f=1MHz | 3 |
| Peak pulse power | PPP |  |  | 70 | W | Non-repetitive current pulse 8/20μs per IEC61000-4-5 (note 2) | 2 |
| Peak pulse current | IPP |  |  | 7 | A | Non-repetitive current pulse 8/20μs per IEC61000-4-5 (note 2) | 2 |
| Lead solder temperature maximum | TL |  |  | 260 | ℃ | 10 second duration | 2 |
| Operation junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 2 |
| Reverse stand off voltage | VRWM |  | 3.3 |  | V |  | 3 |

## CAD (KiCad official)

- Symbol: `ESDBL3V3D5`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `esdbl3v3d5-etched.step` / `esdbl3v3d5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esdbl3v3d5.step` / `esdbl3v3d5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/esdbl3v3d5-datasheet.pdf) (6 pp, sha256 `d3c217d8ae58c4d6`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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/esdbl3v3d5-datasheet.pdf)