# BAS4005E6433

**Infineon Technologies** · Schottky Barrier Diodes (SBD) · SOT-23

BAS4005E6433 from Infineon Technologies, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A1 | passive | Anode of diode D1 in the BAS40-05 common-cathode pair, which has VR = 40 V and IF = 120 mA maximum. |
| 2 | A2 | passive | Anode of diode D2 in the BAS40-05 common-cathode pair, which has VR = 40 V and IF = 120 mA maximum. |
| 3 | K | passive | Common cathode of D1 and D2 in the BAS40-05; total power dissipation is 250 mW at TS ≤ 31 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOT-23 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | V(BR) | 40 |  |  | V | I(BR) = 10 µA | 3 |
| Reverse current | IR |  |  | 1 | µA | VR = 30 V | 3 |
| Forward voltage | VF | 250 | 310 | 380 | mV | IF = 1 mA | 3 |
| Forward voltage | VF | 350 | 450 | 500 | mV | IF = 10 mA | 3 |
| Forward voltage | VF | 600 | 720 | 1000 | mV | IF = 40 mA | 3 |
| Forward voltage matching | ∆VF |  |  | 20 |  | IF = 10 mA | 3 |
| Diode capacitance | CT |  | 3 | 5 | pF | VR = 0, f = 1 MHz | 3 |
| Differential forward resistance | RF |  | 10 |  | Ω | IF = 10 mA, f = 10 kHz | 3 |
| Charge carrier life time | τrr |  |  | 100 | ps | IF = 25 mA | 3 |
| Diode reverse voltage | VR |  |  | 40 | V | TA = 25 °C | 2 |
| Forward current | IF |  |  | 120 | mA | TA = 25 °C | 2 |
| Non-repetitive peak surge forward current | IFSM |  |  | 200 |  | t ≤ 10ms | 2 |
| Total power dissipation | Ptot |  |  | 250 | mW | BAS40-05, TS ≤ 31°C | 2 |
| Junction temperature | Tj |  |  | 150 | °C |  | 2 |
| Operating temperature range | Top | -55 |  | 150 | °C |  | 2 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 2 |
| Thermal resistance junction - soldering point | RthJS |  |  | 475 | K/W | BAS40-05 | 2 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `BAS4005E6433`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23, generated on the KiCad land (body 1.3 x 2.9 mm, terminals on the pads, 1.0 mm tall, datasheet A, nominal). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `bas4005e6433-etched.step` / `bas4005e6433-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bas4005e6433.step` / `bas4005e6433.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](docs/bas4005e6433-datasheet.pdf) (15 pp, sha256 `8cde61e18bbdc846`, retrieved 2026-11-12, 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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/bas4005e6433-datasheet.pdf)