# ESD5V0B12-523

**TECH PUBLIC** · ESD Protection Devices · SOD-523

ESD5V0B12-523 from TECH PUBLIC, 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 | TVS terminal 1 | passive | One terminal of the bidirectional TVS, rated for a nominal reverse working voltage VRWM of 5 V max, breakdown VBR of 6 V min to 9 V max, reverse leakage of 1 uA max, and clamping voltage of 8 V typ at 1 A (8x20 us) and 15 V max at 5 A. |
| 2 | TVS terminal 2 | passive | The second terminal of the bidirectional TVS, with the same ratings as pin 1 (VRWM 5 V max, VBR 6 to 9 V, IR 1 uA max, clamping 8 V typ at 1 A and 15 V max at 5 A) and 12 pF typ junction capacitance at VR = 0 V, f = 1 MHz. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOD-523 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `ESD5V0B12-523`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `esd5v0b12-523-etched.step` / `esd5v0b12-523-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd5v0b12-523.step` / `esd5v0b12-523.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/esd5v0b12-523-datasheet.pdf) (4 pp, sha256 `136672a8678f693a`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/esd5v0b12-523-datasheet.pdf)