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BAS521
Public Made by Adomby adom
TECH PUBLIC Schottky Diodes, SOD-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
markdownBAS521
TECH PUBLIC · Schottky Diodes · SOD-523
BAS521 from TECH PUBLIC, in a SOD-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 | CATHODE | passive | Cathode terminal of the BAS521 Schottky barrier diode, marked PIN1 on the SOD523 package; the datasheet limits are 300 V peak repetitive reverse voltage, 250 mA continuous forward current (TS ≤ 90°C) and 4.5 A peak forward surge current (1 ms square wave). |
| 2 | ANODE | passive | Anode terminal of the BAS521 Schottky barrier diode, marked PIN2 on the SOD523 package; the datasheet limits are a 300 V DC blocking voltage, 250 mA continuous forward current (TS ≤ 90°C) and 1 A repetitive forward current (1 ms). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOD-523 |
| Category | Diodes |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
BAS521 - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
bas521-etched.step/bas521-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bas521.step/bas521.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (3 pp, sha256
1054f7a20610ba99, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(vision), consensusclaude-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).