# LBAS40LT1G

**LRC** · Schottky Diodes · SOT-23

LBAS40LT1G from LRC, in a SOT-23. 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 | A | passive | Anode of the single Schottky diode (BAS40); continuous forward current up to 120 mA. |
| 2 | NC | unconnected | Not used in the BAS40 single-diode configuration; the datasheet symbol shows only pins 1 and 3. |
| 3 | K | passive | Cathode of the single Schottky diode (BAS40); continuous reverse voltage up to 40 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| 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 |
|---|---|---|---|---|---|---|---|
| Continuous reverse voltage | VR |  |  | 40 | V |  | 2 |
| Continuous forward current | IF |  |  | 120 | mA |  | 2 |
| Repetitive peak forward surge current | IFSM |  |  | 120 | mA | tp<1s;δ<0.5 | 2 |
| Non-repetitive peak forward current | IFSM |  |  | 200 | mA | tp<10ms | 2 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 2 |
| Junction temperature | Tj |  |  | 150 | °C |  | 2 |
| Operating ambient temperature | Tamb | -65 |  | 150 | °C |  | 2 |
| Forward voltage | VF |  |  | 400 | mV | IF=1mA | 2 |
| Forward voltage | VF |  |  | 560 | mV | IF=10mA | 2 |
| Forward voltage | VF |  |  | 1 | V | IF=40mA | 2 |
| Reverse current | IR |  |  | 1 | µA | VR=30V | 2 |
| Reverse current | IR |  |  | 10 | µA | VR=40V | 2 |
| Diode capacitance | Cd |  |  | 5 | pF | f=1MHz;VR=0 | 2 |
| Thermal resistance from junction to ambient | Rth j-a |  |  | 500 | K/W | Note 1: SOT23 or SOT143B standard mounting conditions | 2 |

## CAD (KiCad official)

- Symbol: `LBAS40LT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `lbas40lt1g-etched.step` / `lbas40lt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lbas40lt1g.step` / `lbas40lt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172844397514752) (4 pp, sha256 `15ca75fa1ad0ca3e`, retrieved 2026-10-17, 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/lbas40lt1g-datasheet.pdf)