component
SA18A
Public Made by Adomby adom
Brightking ESD And Surge Protection (TVS/ESD), DO-15. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownSA18A
Brightking · ESD And Surge Protection (TVS/ESD) · DO-15
SA18A from Brightking, in a DO-15. 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| Package | DO-15 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (unidirectional SA18A) | VBR | 20 | 22.1 | V | @IT 1 mA | 2 | |
| Maximum clamping voltage (SA18A) | VC | 29.2 | V | @IPP 17.5 A | 2 | ||
| Reverse leakage (SA18A) | IR | 1 | μA | @VRWM 18.0 V | 2 | ||
| Peak pulse power dissipation | PPPM | 500 | Watts | 10/1000μs waveform (Note1, Note2, Fig.1) | 1 | ||
| Steady state power dissipation | PM(AV) | 3 | Watts | TA=50℃ (Fig.5) | 1 | ||
| Peak forward surge current | IFSM | 70 | Amps | 8.3ms single half sine-wave superimposed on rated load, (JEDEC Method) (Note3, Fig.6) | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Peak soldering temperature | 265 | ℃ | Wave soldering, dipping time 10 seconds, 1 time | 5 | |||
| Reverse stand-off voltage (SA18A) | VRWM | 18 | V | 2 | |||
| Typical thermal resistance junction to lead | RθJL | 20 | ℃/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 75 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
SA18A - Footprint:
Diode_THT:D_DO-15_P12.70mm_Horizontal - 3D model: DO-15 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Brightking datasheet (6 pp, sha256
f0dc01ead7acea2f, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).