component
SMAJ12AQ
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech ESD And Surge Protection (TVS/ESD), DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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SMAJ12AQ
Yangzhou Yangjie Elec Tech · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMAJ12AQ from Yangzhou Yangjie Elec Tech, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-214AC(SMA) |
| 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 min | VBR | 13.3 | V | IT = 1 mA | 2 | ||
| Breakdown voltage max | VBR | 14.7 | V | IT = 1 mA | 2 | ||
| Maximum reverse leakage current | IR | 1 | μA | VRWM = 12.0 V | 2 | ||
| Maximum reverse surge current | IPP | 20.1 | A | 2 | |||
| Maximum clamping voltage | VC | 19.9 | V | @ IPP | 2 | ||
| Peak power dissipation | PPPM | 400 | W | 10/1000us waveform | 1 | ||
| Power dissipation, Ta=25℃ | PD | 1.25 | W | Ta=25℃ | 1 | ||
| Peak forward surge current | IFSM | 40 | A | 8.3 ms single half sine-wave unidirectional only | 1 | ||
| Operating junction temperature range | TJ | -55 | 175 | ℃ | 1 | ||
| Storage temperature range | TSTG | -55 | 175 | ℃ | 1 | ||
| Maximum instantaneous forward voltage | VF | 1.5 | V | @ 1A for unidirectional only | 1 | ||
| Working peak reverse voltage | VRWM | 12 | V | 2 | |||
| Thermal resistance junction to lead | RθJL | 30 | ℃/W | junction to lead | 3 | ||
| Thermal resistance junction to ambient | RθJA | 120 | ℃/W | junction to ambient | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | black | 4. Body color: Black | 3 | |
| contacts | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |
CAD (KiCad official)
- Symbol:
SMAJ12AQ - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
smaj12aq-etched.step/smaj12aq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj12aq.step/smaj12aq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (6 pp, sha256
2e9b6a2b6ca2e2c6, retrieved 2026-10-26, 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).
# SMAJ12AQ
**Yangzhou Yangjie Elec Tech** · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMAJ12AQ from Yangzhou Yangjie Elec Tech, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-214AC(SMA) |
| 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 min | VBR | 13.3 | | | V | IT = 1 mA | 2 |
| Breakdown voltage max | VBR | | | 14.7 | V | IT = 1 mA | 2 |
| Maximum reverse leakage current | IR | | | 1 | μA | VRWM = 12.0 V | 2 |
| Maximum reverse surge current | IPP | | | 20.1 | A | | 2 |
| Maximum clamping voltage | VC | | | 19.9 | V | @ IPP | 2 |
| Peak power dissipation | PPPM | | | 400 | W | 10/1000us waveform | 1 |
| Power dissipation, Ta=25℃ | PD | | | 1.25 | W | Ta=25℃ | 1 |
| Peak forward surge current | IFSM | | | 40 | A | 8.3 ms single half sine-wave unidirectional only | 1 |
| Operating junction temperature range | TJ | -55 | | 175 | ℃ | | 1 |
| Storage temperature range | TSTG | -55 | | 175 | ℃ | | 1 |
| Maximum instantaneous forward voltage | VF | | | 1.5 | V | @ 1A for unidirectional only | 1 |
| Working peak reverse voltage | VRWM | | 12 | | V | | 2 |
| Thermal resistance junction to lead | RθJL | | 30 | | ℃/W | junction to lead | 3 |
| Thermal resistance junction to ambient | RθJA | | 120 | | ℃/W | junction to ambient | 3 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | | black | 4. Body color: Black | 3 |
| contacts | | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |
## CAD (KiCad official)
- Symbol: `SMAJ12AQ`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `smaj12aq-etched.step` / `smaj12aq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj12aq.step` / `smaj12aq.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602996151389855744) (6 pp, sha256 `2e9b6a2b6ca2e2c6`, retrieved 2026-10-26, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/smaj12aq-datasheet.pdf)