component
KSMAJ180A-E3
Public Made by Adomby adom
KUU ESD And Surge Protection (TVS/ESD), 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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KSMAJ180A-E3
KUU · ESD And Surge Protection (TVS/ESD) · SMA
KSMAJ180A-E3 from KUU, in a 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 | KUU |
| Package | 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 Minimum (Unidirectional, Part KSMAJ180A) | VBL | 201 | V | @IT = 1 mA | 3 | ||
| Breakdown Voltage Maximum (Unidirectional, Part KSMAJ180A) | VBH | 222 | V | @IT = 1 mA | 3 | ||
| Reverse Leakage Current Maximum (Unidirectional, Part KSMAJ180A) | IR | 1 | uA | @VRWM = 180 V | 3 | ||
| Maximum Clamping Voltage (Unidirectional, Part KSMAJ180A) | VCH | 292 | V | @IPP = 1.4 A | 3 | ||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | 150 | ℃ | 1 | ||
| Peak Pulse Power Dissipation | PPPM | 400 | Watts | 10/1000us waveform (Note1, Fig.1) | 1 | ||
| Peak Pulse Current (Table Value) | IPP | 1.4 | A | 10/1000us waveform (Note1, Fig.3) | 3 | ||
| Stand-Off Voltage (Reverse Working Voltage) | VRWM | 180 | V | 3 | |||
| Steady State Power Dissipation | PM(AV) | 3.3 | Watts | TL = 75℃, lead lengths .375" (9.5mm) (Fig.5) | 1 | ||
| Peak Forward Surge Current | IFSM | 40 | Amps | 8.3ms single half sine-wave, superimposed on rated load, JEDEC method (Note 2, Fig.6) | 1 |
CAD (KiCad official)
- Symbol:
KSMAJ180A-E3 - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
ksmaj180a-e3-etched.step/ksmaj180a-e3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ksmaj180a-e3.step/ksmaj180a-e3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KUU datasheet (4 pp, sha256
f58346f6bb58acda, 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).
# KSMAJ180A-E3
**KUU** · ESD And Surge Protection (TVS/ESD) · SMA
KSMAJ180A-E3 from KUU, in a 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 | KUU |
| Package | 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 Minimum (Unidirectional, Part KSMAJ180A) | VBL | 201 | | | V | @IT = 1 mA | 3 |
| Breakdown Voltage Maximum (Unidirectional, Part KSMAJ180A) | VBH | | | 222 | V | @IT = 1 mA | 3 |
| Reverse Leakage Current Maximum (Unidirectional, Part KSMAJ180A) | IR | | | 1 | uA | @VRWM = 180 V | 3 |
| Maximum Clamping Voltage (Unidirectional, Part KSMAJ180A) | VCH | | | 292 | V | @IPP = 1.4 A | 3 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | | 150 | ℃ | | 1 |
| Peak Pulse Power Dissipation | PPPM | 400 | | | Watts | 10/1000us waveform (Note1, Fig.1) | 1 |
| Peak Pulse Current (Table Value) | IPP | | 1.4 | | A | 10/1000us waveform (Note1, Fig.3) | 3 |
| Stand-Off Voltage (Reverse Working Voltage) | VRWM | | 180 | | V | | 3 |
| Steady State Power Dissipation | PM(AV) | | 3.3 | | Watts | TL = 75℃, lead lengths .375" (9.5mm) (Fig.5) | 1 |
| Peak Forward Surge Current | IFSM | | 40 | | Amps | 8.3ms single half sine-wave, superimposed on rated load, JEDEC method (Note 2, Fig.6) | 1 |
## CAD (KiCad official)
- Symbol: `KSMAJ180A-E3`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `ksmaj180a-e3-etched.step` / `ksmaj180a-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ksmaj180a-e3.step` / `ksmaj180a-e3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [KUU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590216677318160384) (4 pp, sha256 `f58346f6bb58acda`, retrieved 2026-10-15, 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/ksmaj180a-e3-datasheet.pdf)