component
SMAJ28CAQ
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Yangzhou Yangjie Elec Tech Electrostatic 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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SMAJ28CAQ
Yangzhou Yangjie Elec Tech · Electrostatic And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMAJ28CAQ 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-214AC(SMA) |
| Category | TVS/Fuse/Board Level 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 | 31.1 | 34.4 | V | @ IT = 1 mA | 2 | |
| Maximum reverse leakage | IR | 1 | μA | @ VRWM | 2 | ||
| Maximum reverse surge current | IPP | 8.8 | A | Surge waveform per Fig. 3, derated per Fig.2 | 2 | ||
| Maximum clamping voltage | Vc | 45.4 | V | @ IPP = 8.8 A | 2 | ||
| Working peak reverse voltage | VRWM | 28 | V | 2 | |||
| Breakdown test current | IT | 1 | mA | Pulse test: tp≤50ms | 2 | ||
| Peak power dissipation | PPPM | 400 | W | 10/1000us waveform, Ta=25℃ | 1 | ||
| Power dissipation | PD | 1.25 | W | Ta=25℃ | 1 | ||
| Operating junction temperature | TJ | -55 | 175 | ℃ | 1 | ||
| Storage temperature range | TSTG | -55 | 175 | ℃ | 1 | ||
| 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:
SMAJ28CAQ - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
smaj28caq-etched.step/smaj28caq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj28caq.step/smaj28caq.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 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).
# SMAJ28CAQ
**Yangzhou Yangjie Elec Tech** · Electrostatic And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMAJ28CAQ 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-214AC(SMA) |
| Category | TVS/Fuse/Board Level 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 | 31.1 | | 34.4 | V | @ IT = 1 mA | 2 |
| Maximum reverse leakage | IR | | | 1 | μA | @ VRWM | 2 |
| Maximum reverse surge current | IPP | | | 8.8 | A | Surge waveform per Fig. 3, derated per Fig.2 | 2 |
| Maximum clamping voltage | Vc | | | 45.4 | V | @ IPP = 8.8 A | 2 |
| Working peak reverse voltage | VRWM | | 28 | | V | | 2 |
| Breakdown test current | IT | | 1 | | mA | Pulse test: tp≤50ms | 2 |
| Peak power dissipation | PPPM | | | 400 | W | 10/1000us waveform, Ta=25℃ | 1 |
| Power dissipation | PD | | | 1.25 | W | Ta=25℃ | 1 |
| Operating junction temperature | TJ | -55 | | 175 | ℃ | | 1 |
| Storage temperature range | TSTG | -55 | | 175 | ℃ | | 1 |
| 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: `SMAJ28CAQ`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `smaj28caq-etched.step` / `smaj28caq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj28caq.step` / `smaj28caq.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/smaj28caq-datasheet.pdf) (6 pp, sha256 `2e9b6a2b6ca2e2c6`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal 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/smaj28caq-datasheet.pdf)