component
SMA2Z140A
Public Made by Adomby adom
XCH(旭昌辉) Zener Diodes, 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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SMA2Z140A
XCH(旭昌辉) · Zener Diodes · SMA
SMA2Z140A from XCH(旭昌辉), 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 | XCH(旭昌辉) |
| Package | SMA |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (nominal, tested at IZT) | VZT | 133 | 140 | 147 | V | @ IZT = 3.6 mA; VZT tested with pulses (20 ms) | 2 |
| Dynamic impedance | ZZT | 500 | Ω | @ IZT = 3.6 mA | 2 | ||
| Dynamic impedance (knee) | ZZK | 5500 | Ω | @ IZK = 0.25 mA | 2 | ||
| Reverse current | IR | 0.5 | µA | @ VR = 106.4 V | 2 | ||
| Maximum DC zener current | IZM | 13 | mA | 2 | |||
| Power dissipation | PD | 2 | W | Tc = 75 °C | 1 | ||
| Forward voltage | VF | 1.2 | V | IF = 200 mA | 1 | ||
| Junction temperature range | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature range | TS | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SMA2Z140A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
sma2z140a-etched.step/sma2z140a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma2z140a.step/sma2z140a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XCH(旭昌辉) datasheet (3 pp, sha256
62fa4d1fbdcccdab, retrieved 2026-10-17, 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).
# SMA2Z140A
**XCH(旭昌辉)** · Zener Diodes · SMA
SMA2Z140A from XCH(旭昌辉), 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 | XCH(旭昌辉) |
| Package | SMA |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (nominal, tested at IZT) | VZT | 133 | 140 | 147 | V | @ IZT = 3.6 mA; VZT tested with pulses (20 ms) | 2 |
| Dynamic impedance | ZZT | | | 500 | Ω | @ IZT = 3.6 mA | 2 |
| Dynamic impedance (knee) | ZZK | | | 5500 | Ω | @ IZK = 0.25 mA | 2 |
| Reverse current | IR | | | 0.5 | µA | @ VR = 106.4 V | 2 |
| Maximum DC zener current | IZM | | | 13 | mA | | 2 |
| Power dissipation | PD | | | 2 | W | Tc = 75 °C | 1 |
| Forward voltage | VF | | 1.2 | | V | IF = 200 mA | 1 |
| Junction temperature range | TJ | -55 | | 150 | °C | | 1 |
| Storage temperature range | TS | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `SMA2Z140A`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `sma2z140a-etched.step` / `sma2z140a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sma2z140a.step` / `sma2z140a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [XCH(旭昌辉) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756596765087158272) (3 pp, sha256 `62fa4d1fbdcccdab`, retrieved 2026-10-17, 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/sma2z140a-datasheet.pdf)