component
SMB3Z91A
Public Made by Adomby adom
ZHIDE Zener Diodes, SMB. 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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SMB3Z91A
ZHIDE · Zener Diodes · SMB
SMB3Z91A from ZHIDE, in a SMB. 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 | ZHIDE |
| Package | SMB |
| 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 (AVE nominal, with MIN/MAX) | VZ | 86.45 | 91 | 95.55 | V | @IZT = 8.2 mA | 3 |
| Maximum zener impedance (ZZT) | ZZT | 115 | Ω | @IZT = 8.2 mA | 3 | ||
| Maximum zener impedance (ZZK) | ZZK | 3000 | Ω | @IZK = 0.25 mA | 3 | ||
| Maximum reverse leakage current | IR | 0.5 | µA | @VR = 69.2 V | 3 | ||
| Maximum DC zener current | IZM | 30 | mA | 3 | |||
| Maximum forward voltage | VF | 1.2 | V | at IF = 200 mA | 1 | ||
| DC power dissipation | PD | 3 | W | at TL = 75 °C (note 1) | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | ℃ | 1 | ||
| Junction temperature range | TJ | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
SMB3Z91A - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smb3z91a-etched.step/smb3z91a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smb3z91a.step/smb3z91a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ZHIDE datasheet (3 pp, sha256
3cd52cbc4a75bfcc, retrieved 2026-10-16, 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).
# SMB3Z91A
**ZHIDE** · Zener Diodes · SMB
SMB3Z91A from ZHIDE, in a SMB. 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 | ZHIDE |
| Package | SMB |
| 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 (AVE nominal, with MIN/MAX) | VZ | 86.45 | 91 | 95.55 | V | @IZT = 8.2 mA | 3 |
| Maximum zener impedance (ZZT) | ZZT | | | 115 | Ω | @IZT = 8.2 mA | 3 |
| Maximum zener impedance (ZZK) | ZZK | | | 3000 | Ω | @IZK = 0.25 mA | 3 |
| Maximum reverse leakage current | IR | | | 0.5 | µA | @VR = 69.2 V | 3 |
| Maximum DC zener current | IZM | | | 30 | mA | | 3 |
| Maximum forward voltage | VF | | | 1.2 | V | at IF = 200 mA | 1 |
| DC power dissipation | PD | | | 3 | W | at TL = 75 °C (note 1) | 1 |
| Storage temperature range | TSTG | -55 | | 150 | ℃ | | 1 |
| Junction temperature range | TJ | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `SMB3Z91A`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `smb3z91a-etched.step` / `smb3z91a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smb3z91a.step` / `smb3z91a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ZHIDE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603079050697195520) (3 pp, sha256 `3cd52cbc4a75bfcc`, retrieved 2026-10-16, 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/smb3z91a-datasheet.pdf)