component
SA18CA
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Brightking Elec (TAIWAN) TVS, DO-15. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SA18CA
Brightking Elec (TAIWAN) · TVS · DO-15
SA18CA from Brightking Elec (TAIWAN), 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 | A1 | passive | Bidirectional terminal 1 (axial lead) of the SA18CA with VRWM 18.0V, VBR 20.00~22.10V at 1mA and VC 29.2V at 17.5A IPP; no cathode band, so polarity does not matter. |
| 2 | A2 | passive | Bidirectional terminal 2 (axial lead) of the SA18CA, interchangeable with terminal 1, with 500W minimum peak pulse power at 10/1000μs and IR 1μA at VRWM. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Brightking Elec (TAIWAN) |
| 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 | VBR | 20 | 22.1 | V | @IT=1mA, TA=25℃ | 2 | |
| Reverse Stand-Off Voltage | VRWM | 18 | V | TA=25℃ | 2 | ||
| Maximum Clamping Voltage | VC | 29.2 | V | @IPP=17.5A | 2 | ||
| Peak Pulse Current | IPP | 17.5 | A | 10/1000μs waveform | 2 | ||
| Reverse Leakage | IR | 1 | μA | @VRWM | 2 | ||
| Test Current | IT | 1 | mA | 2 | |||
| Peak pulse power dissipation | PPPM | 500 | Watts | 10/1000μs waveform | 1 | ||
| Steady state power dissipation | PM(AV) | 3 | Watts | TA=50℃ | 1 | ||
| Peak forward surge current | IFSM | 70 | Amps | 8.3ms single half sine-wave superimposed on rated load, JEDEC Method | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Thermal resistance junction to lead | RθJL | 20 | ℃/W | Typical | 1 | ||
| Thermal resistance junction to ambient | RθJA | 75 | ℃/W | Typical | 1 |
CAD (KiCad official)
- Symbol:
SA18CA - 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 Elec (TAIWAN) datasheet (6 pp, sha256
f0dc01ead7acea2f, 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).
# SA18CA
**Brightking Elec (TAIWAN)** · TVS · DO-15
SA18CA from Brightking Elec (TAIWAN), 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 | A1 | passive | Bidirectional terminal 1 (axial lead) of the SA18CA with VRWM 18.0V, VBR 20.00~22.10V at 1mA and VC 29.2V at 17.5A IPP; no cathode band, so polarity does not matter. |
| 2 | A2 | passive | Bidirectional terminal 2 (axial lead) of the SA18CA, interchangeable with terminal 1, with 500W minimum peak pulse power at 10/1000μs and IR 1μA at VRWM. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Brightking Elec (TAIWAN) |
| 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 | VBR | 20 | | 22.1 | V | @IT=1mA, TA=25℃ | 2 |
| Reverse Stand-Off Voltage | VRWM | | 18 | | V | TA=25℃ | 2 |
| Maximum Clamping Voltage | VC | | | 29.2 | V | @IPP=17.5A | 2 |
| Peak Pulse Current | IPP | | | 17.5 | A | 10/1000μs waveform | 2 |
| Reverse Leakage | IR | | | 1 | μA | @VRWM | 2 |
| Test Current | IT | | 1 | | mA | | 2 |
| Peak pulse power dissipation | PPPM | 500 | | | Watts | 10/1000μs waveform | 1 |
| Steady state power dissipation | PM(AV) | | | 3 | Watts | TA=50℃ | 1 |
| Peak forward surge current | IFSM | | | 70 | Amps | 8.3ms single half sine-wave superimposed on rated load, JEDEC Method | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 | | 150 | ℃ | | 1 |
| Thermal resistance junction to lead | RθJL | | 20 | | ℃/W | Typical | 1 |
| Thermal resistance junction to ambient | RθJA | | 75 | | ℃/W | Typical | 1 |
## CAD (KiCad official)
- Symbol: `SA18CA`
- 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 Elec (TAIWAN) datasheet](docs/sa18ca-datasheet.pdf) (6 pp, sha256 `f0dc01ead7acea2f`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/sa18ca-datasheet.pdf)