component
1SMB3EZ4.7
Public Made by Adomby adom
SUNMATE Elec 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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1SMB3EZ4.7
SUNMATE Elec · Zener Diodes · SMB
1SMB3EZ4.7 from SUNMATE Elec, 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 | SUNMATE Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| DC Power Dissipation at TL = 75 °C | PD | 3 | Watts | TL = 75 °C (Note 1) | 1 | ||
| Maximum Forward Voltage | VF | 1.5 | Volts | IF = 200 mA | 1 | ||
| Maximum Thermal Resistance Junction to Ambient Air | RθJA | 60 | K / W | Note 2: leads kept at ambient, 10 mm from case | 1 | ||
| Junction Temperature Range | TJ | -55 | 175 | °C | 1 | ||
| Storage Temperature Range | Ts | -55 | 175 | °C | 1 | ||
| Maximum Zener Impedance | ZZT | 4 | Ω | @ IZT = 160 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 500 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 20 | μA | @ VR = 1.0 V | 2 | ||
| Maximum DC Zener Current | IZM | 550 | mA | 2 | |||
| Nominal Zener Voltage | VZ | 4.7 | V | @ IZT = 160 mA | 2 |
CAD (KiCad official)
- Symbol:
1SMB3EZ4.7 - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
1smb3ez4-7-etched.step/1smb3ez4-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1smb3ez4-7.step/1smb3ez4-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SUNMATE Elec datasheet (3 pp, sha256
c7ffa07f96057398, 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).
# 1SMB3EZ4.7
**SUNMATE Elec** · Zener Diodes · SMB
1SMB3EZ4.7 from SUNMATE Elec, 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 | SUNMATE Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| DC Power Dissipation at TL = 75 °C | PD | | | 3 | Watts | TL = 75 °C (Note 1) | 1 |
| Maximum Forward Voltage | VF | | | 1.5 | Volts | IF = 200 mA | 1 |
| Maximum Thermal Resistance Junction to Ambient Air | RθJA | | | 60 | K / W | Note 2: leads kept at ambient, 10 mm from case | 1 |
| Junction Temperature Range | TJ | -55 | | 175 | °C | | 1 |
| Storage Temperature Range | Ts | -55 | | 175 | °C | | 1 |
| Maximum Zener Impedance | ZZT | | | 4 | Ω | @ IZT = 160 mA | 2 |
| Maximum Zener Impedance (knee) | ZZK | | | 500 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 20 | μA | @ VR = 1.0 V | 2 |
| Maximum DC Zener Current | IZM | | | 550 | mA | | 2 |
| Nominal Zener Voltage | VZ | | 4.7 | | V | @ IZT = 160 mA | 2 |
## CAD (KiCad official)
- Symbol: `1SMB3EZ4.7`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `1smb3ez4-7-etched.step` / `1smb3ez4-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1smb3ez4-7.step` / `1smb3ez4-7.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [SUNMATE Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603087453716824064) (3 pp, sha256 `c7ffa07f96057398`, 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/1smb3ez4-7-datasheet.pdf)