component
SM140A
Public Made by Adomby adom
LRC Schottky Barrier Diodes (SBD), DO-214AC(SMA). 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
markdownSM140A
LRC · Schottky Barrier Diodes (SBD) · DO-214AC(SMA)
SM140A from LRC, in a DO-214AC(SMA). 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, marked by the color band on the DO-214AC molded plastic case; SM140A is rated for 40V repetitive peak reverse voltage and 1.0A average forward current. |
| 2 | A | passive | Anode terminal of the Schottky barrier rectifier, the end opposite the cathode color band on the DO-214AC package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | DO-214AC(SMA) |
| 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 | VRMS | 28 | V | 1 | |||
| Maximum DC blocking voltage | VDC | 40 | V | 1 | |||
| Maximum average forward rectified current | IF(AV) | 1 | A | 0.375" (9.5mm) lead length (See fig. 1) | 1 | ||
| Peak forward surge current | IFSM | 30 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -40 | 125 | °C | 1 | ||
| Maximum instantaneous forward voltage | VF | 0.5 | V | at 1.0A | 1 | ||
| Maximum DC reverse current | IR | 0.5 | mA | TA = 25°C, at rated DC blocking voltage | 1 | ||
| Maximum DC reverse current | IR | 5 | mA | TA = 125°C, at rated DC blocking voltage | 1 | ||
| Typical thermal resistance | RθJA | 110 | °C/W | Junction to ambient, 0.375" (9.5mm) lead length, P.C.B. mounted | 1 | ||
| Typical junction capacitance | CJ | 50 | pF | at 4.0V, 1MHz | 1 |
CAD (KiCad official)
- Symbol:
SM140A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
sm140a-etched.step/sm140a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sm140a.step/sm140a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (4 pp, sha256
d778c825abcef950, 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).