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BAS40T
Public Made by Adomby adom
CBI Schottky Diodes, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBAS40T
CBI · Schottky Diodes · SOT-523
BAS40T 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 (printed as '1. BASE' in the package table); the BAS40T symbol connects the diode between pins 1 and 3, with VR and VRRM of 40 V and IF of 200 mA. |
| 2 | NC | unconnected | Not connected in the single-diode BAS40T symbol (printed as '2. EMITTER' in the package table); no diode is drawn on this pin. |
| 3 | K | passive | Cathode of the single Schottky diode (printed as '3. COLLECTOR' in the package table); the BAS40T symbol connects the diode between pins 1 and 3, with VR and VRRM of 40 V and IF of 200 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 |
|---|---|---|---|---|---|---|---|
| Repetitive Peak Reverse Voltage | VRRM | 40 | V | 1 | |||
| DC Blocking Voltage | VR | 40 | V | 1 | |||
| Forward Continuous Current | IF | 200 | mA | 1 | |||
| Peak Forward Surge Current | IFSM | 600 | mA | tp < 1 s | 1 | ||
| Junction Temperature | TJ | 150 | °C | 1 | |||
| Storage Temperature Range | TS | -55 | 150 | °C | 1 | ||
| Forward Voltage | VF | 380 | mV | IF = 1 mA | 1 | ||
| Forward Voltage | VF | 1000 | mV | IF = 40 mA | 1 | ||
| Reverse Current | IR | 200 | nA | VR = 30 V | 1 | ||
| Reverse Breakdown Voltage | V(BR)R | 40 | V | IR = 10 μA | 1 | ||
| Reverse Recovery Time | trr | 5 | ns | from IF = 10 mA through IR = 10 mA to IR = 1 mA | 1 | ||
| Total Capacitance | CT | 5 | pF | VR = 0 V, f = 1 MHz | 1 |
CAD (KiCad official)
- Symbol:
BAS40T - 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:
bas40t-etched.step/bas40t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bas40t.step/bas40t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CBI datasheet (2 pp, sha256
788f90a08376369d, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).