component
SMBJ5349B
Public Made by Adomby adom
hongjiacheng Zener Diodes, DO-214AA(SMB). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
SMBJ5349B
hongjiacheng · Zener Diodes · DO-214AA(SMB)
SMBJ5349B from hongjiacheng, in a DO-214AA(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 | hongjiacheng |
| Package | DO-214AA(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 tolerance (standard, B suffix) | VZ | -5 | 5 | % | Standard tolerance on nominal zener voltage (Note 1) | 3 | |
| Maximum Zener Impedance | ZZT | 2.5 | Ω | @ IZT = 100 mA | 2 | ||
| Maximum Zener Impedance | ZZK | 125 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 2 | μA | @ VR = 9.1 V | 2 | ||
| Maximum DC Zener Current | IZM | 395 | mA | 2 | |||
| Maximum Surge Current | IZSM | 7.5 | A | 2 | |||
| Maximum Voltage Regulation | 0.25 | V | 2 | ||||
| Power Dissipation | PD | 5000 | mW | at Tc = 75℃ | 1 | ||
| Forward Voltage | VF | 1.2 | V | @ IF = 200mA | 1 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Junction Temperature | Tj | -55 | 150 | ℃ | 1 | ||
| Typical Thermal Resistance, junction to ambient | RθJ-A | 90 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
SMBJ5349B - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
- 3D model files:
smbj5349b-etched.step/smbj5349b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj5349b.step/smbj5349b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (5 pp, sha256
df230341ef316f7b, retrieved 2026-10-21, 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).
# SMBJ5349B
**hongjiacheng** · Zener Diodes · DO-214AA(SMB)
SMBJ5349B from hongjiacheng, in a DO-214AA(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 | hongjiacheng |
| Package | DO-214AA(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 tolerance (standard, B suffix) | VZ | -5 | | 5 | % | Standard tolerance on nominal zener voltage (Note 1) | 3 |
| Maximum Zener Impedance | ZZT | | | 2.5 | Ω | @ IZT = 100 mA | 2 |
| Maximum Zener Impedance | ZZK | | | 125 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 2 | μA | @ VR = 9.1 V | 2 |
| Maximum DC Zener Current | IZM | | | 395 | mA | | 2 |
| Maximum Surge Current | IZSM | | | 7.5 | A | | 2 |
| Maximum Voltage Regulation | | | | 0.25 | V | | 2 |
| Power Dissipation | PD | | | 5000 | mW | at Tc = 75℃ | 1 |
| Forward Voltage | VF | | | 1.2 | V | @ IF = 200mA | 1 |
| Storage Temperature | Tstg | -55 | | 150 | ℃ | | 1 |
| Junction Temperature | Tj | -55 | | 150 | ℃ | | 1 |
| Typical Thermal Resistance, junction to ambient | RθJ-A | | 90 | | ℃/W | | 1 |
## CAD (KiCad official)
- Symbol: `SMBJ5349B`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
- 3D model files: `smbj5349b-etched.step` / `smbj5349b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj5349b.step` / `smbj5349b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [hongjiacheng datasheet](docs/smbj5349b-datasheet.pdf) (5 pp, sha256 `df230341ef316f7b`, retrieved 2026-10-21, 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/smbj5349b-datasheet.pdf)