# BAS70T

**CBI** · Schottky Diodes · SOT-523

BAS70T from CBI, 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 | A | passive | Anode of the single Schottky diode (BAS70T, marking 7C); VRRM/VR 70 V, IFM 70 mA. |
| 2 | NC | unconnected | Not connected internally in the single-diode BAS70T; the symbol shows no diode on this lead. |
| 3 | K | passive | Cathode of the single Schottky diode (BAS70T, marking 7C); VRRM/VR 70 V, IFM 70 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| Package | SOT-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage | V(BR) | 70 |  |  | V | IR=10µA | 1 |
| Reverse voltage leakage current | IR |  |  | 100 | nA | VR=50V | 1 |
| Forward voltage | VF |  |  | 410 | mV | IF=1mA | 1 |
| Forward voltage | VF |  |  | 1000 | mV | IF=15mA | 1 |
| Diode capacitance | CD |  |  | 2 | pF | VR=0, f=1MHz | 1 |
| Reverse recovery time | trr |  |  | 5 | ns | IF=IR=10mA, Irr=0.1xIR, RL=100Ω | 1 |
| Peak repetitive peak reverse voltage / working peak reverse voltage / DC blocking voltage | VRRM, VRWM, VR |  |  | 70 | V |  | 1 |
| Forward continuous current | IFM |  |  | 70 | mA |  | 1 |
| Non-repetitive peak forward surge current | IFSM |  |  | 100 | mA | t = 8.3ms | 1 |
| Power dissipation | PD |  |  | 150 | mW |  | 1 |
| Junction temperature | TJ |  |  | 125 | ℃ |  | 1 |
| Storage temperature | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance junction to ambient | RθJA |  |  | 667 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BAS70T`
- 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: `bas70t-etched.step` / `bas70t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bas70t.step` / `bas70t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CBI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590207848052252672) (3 pp, sha256 `df7f3c652ec938ee`, 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/bas70t-datasheet.pdf)