# BV-E505U2A

**Bencent** · ESD And Surge Protection (TVS/ESD) · SOT-523

BV-E505U2A from Bencent, in a SOT-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 | IO1 | passive | Protected line 1 (steering-diode input), 5V working voltage (VDRM), 6V min breakdown at 1mA, 0.8pF max capacitance. |
| 2 | IO2 | passive | Protected line 2 (steering-diode input), 5V working voltage (VDRM), 6V min breakdown at 1mA, 0.8pF max capacitance. |
| 3 | GND | power_in | Common ground return connected to the TVS diode, the reference for pins 1 and 2 (VBR measured from pins 1, 2 to 3). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Bencent |
| Package | SOT-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse leakage current | IDRM |  |  | 1 | μA | at VDRM | 1 |
| Stand-off voltage | VDRM |  |  | 5 | V |  | 1 |
| Breakdown voltage | VBR | 6 |  |  | V | IR=1mA, Pin 1, 2 to 3 | 1 |
| Clamping voltage | VC |  |  | 12 | V | Surge 8/20μs, Ipp=1 A | 1 |
| Clamping voltage | VC |  |  | 25 | V | Surge 8/20μs, Ipp=4 A | 1 |
| Off-state capacitance | CO |  |  | 0.8 | pF | VDC=0V, VRMS=1V, f=1MHz | 1 |
| Operating junction temperature range | TJ | -40 |  | 125 | ℃ |  | 2 |
| Storage temperature range | TS | -55 |  | 150 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `BV-E505U2A`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `bv-e505u2a-etched.step` / `bv-e505u2a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bv-e505u2a.step` / `bv-e505u2a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Bencent datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603182207976550400) (6 pp, sha256 `b6c89aabc244a655`, 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/bv-e505u2a-datasheet.pdf)