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SMBJ5355B
Public Made by Adomby adom
Slkor(SLKORMICRO Elec.) Zener Diodes, SMB(DO-214AA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMBJ5355B
Slkor(SLKORMICRO Elec.) · Zener Diodes · SMB(DO-214AA)
SMBJ5355B from Slkor(SLKORMICRO Elec.), in a SMB(DO-214AA). 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, marked by the color band on the body; the 5 W zener (SMBJ5355B, 5% tolerance) regulates with this terminal positive relative to the anode. |
| 2 | A | passive | Anode, the terminal opposite the color band; forward voltage is max 1.2 V at IF=1.0A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SMB(DO-214AA) |
| 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 tolerance (B suffix) | -5 | 5 | % | suffix B selected type | 3 | ||
| Maximum zener impedance | ZZT | 2.5 | Ω | @IZT | 2 | ||
| Maximum zener impedance (knee) | ZZK | 75 | Ω | @IZK = 1 mA | 2 | ||
| Maximum reverse leakage current | IR | 0.5 | μA | @VR = 13 V | 2 | ||
| Maximum DC zener current | IZM | 265 | mA | @50℃ | 2 | ||
| Forward voltage | VF | 1.2 | V | IF=1.0A | 1 | ||
| Power dissipation | Pt | 5 | W | TL=75℃ | 1 | ||
| Thermal resistance junction to ambient | Rθ(ja) | 20 | ℃/W | mounted on 5×5mm copper pads at lead ends | 1 | ||
| Operating and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Zener voltage | VZ | 18 | V | @IZT | 2 | ||
| Test current | IZT | 65 | mA | 2 |
CAD (KiCad official)
- Symbol:
SMBJ5355B - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj5355b-etched.step/smbj5355b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj5355b.step/smbj5355b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor(SLKORMICRO Elec.) datasheet (5 pp, sha256
42869e8f1e6e687c, retrieved 2026-10-22, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).
# SMBJ5355B
**Slkor(SLKORMICRO Elec.)** · Zener Diodes · SMB(DO-214AA)
SMBJ5355B from Slkor(SLKORMICRO Elec.), in a SMB(DO-214AA). 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, marked by the color band on the body; the 5 W zener (SMBJ5355B, 5% tolerance) regulates with this terminal positive relative to the anode. |
| 2 | A | passive | Anode, the terminal opposite the color band; forward voltage is max 1.2 V at IF=1.0A. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SMB(DO-214AA) |
| 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 tolerance (B suffix) | | -5 | | 5 | % | suffix B selected type | 3 |
| Maximum zener impedance | ZZT | | | 2.5 | Ω | @IZT | 2 |
| Maximum zener impedance (knee) | ZZK | | | 75 | Ω | @IZK = 1 mA | 2 |
| Maximum reverse leakage current | IR | | | 0.5 | μA | @VR = 13 V | 2 |
| Maximum DC zener current | IZM | | | 265 | mA | @50℃ | 2 |
| Forward voltage | VF | | | 1.2 | V | IF=1.0A | 1 |
| Power dissipation | Pt | | | 5 | W | TL=75℃ | 1 |
| Thermal resistance junction to ambient | Rθ(ja) | | | 20 | ℃/W | mounted on 5×5mm copper pads at lead ends | 1 |
| Operating and storage temperature range | TJ,TSTG | -55 | | 150 | ℃ | | 1 |
| Zener voltage | VZ | | 18 | | V | @IZT | 2 |
| Test current | IZT | | 65 | | mA | | 2 |
## CAD (KiCad official)
- Symbol: `SMBJ5355B`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `smbj5355b-etched.step` / `smbj5355b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj5355b.step` / `smbj5355b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Slkor(SLKORMICRO Elec.) datasheet](docs/smbj5355b-datasheet.pdf) (5 pp, sha256 `42869e8f1e6e687c`, retrieved 2026-10-22, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-5-5` (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/smbj5355b-datasheet.pdf)