component
SM540A
Public Made by Adomby adom
LRC Schottky Barrier Diodes (SBD), DO-214AC. 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
markdownSM540A
LRC · Schottky Barrier Diodes (SBD) · DO-214AC
SM540A from LRC, in a DO-214AC. 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 | K | passive | Cathode terminal, marked by the color band on the package; rated for 40V maximum repetitive peak reverse voltage and 40V DC blocking voltage (SM540A). |
| 2 | A | passive | Anode terminal, opposite the color-banded cathode end; SM540A passes 5.0A maximum average forward rectified current at TA = 80°C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | DO-214AC |
| Category | Diodes |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM | 40 | V | 1 | |||
| Maximum RMS voltage | VRSM | 28 | V | 1 | |||
| Maximum DC blocking voltage | VDC | 40 | V | 1 | |||
| Maximum average forward rectified current | IF(AV) | 5 | A | TA = 80°C | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -40 | 150 | °C | 1 | ||
| Typical thermal resistance | RθJA | 50 | °C/W | Note 1: 8.0mm2 (.013mm thick) land areas | 1 |
CAD (KiCad official)
- Symbol:
SM540A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC (KiCad packages3D, STEP)
- 3D model files:
sm540a-etched.step/sm540a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sm540a.step/sm540a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (9 pp, sha256
3cab7e4290cabad4, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).