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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSMBJ5349B
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).