component
SMBJ5349B-TP
Public Made by Adomby adom
MCC(Micro Commercial Components) Zener Diodes, SMB(DO-214AA). 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-TP
MCC(Micro Commercial Components) · Zener Diodes · SMB(DO-214AA)
SMBJ5349B-TP from MCC(Micro Commercial Components), 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MCC(Micro Commercial Components) |
| 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 | VZ | -5 | 5 | % | Note 1: devices listed have ±5% tolerance on nominal VZ | 3 | |
| Maximum dynamic impedance | ZZT | 2.5 | OHMS | at IZT = 100 mA | 2 | ||
| Maximum reverse current | IR | 2 | µA | at VR = 9.1 V | 2 | ||
| Maximum regulator current | IZM | 395 | mA | 2 | |||
| Maximum dynamic knee impedance | ZZK | 125 | OHMS | @ 1.0 mA | 2 | ||
| Maximum surge current | IZSM | 7.5 | A | 8.3 ms nonrecurring sine wave | 2 | ||
| Maximum voltage regulation | ΔVZ | 0.25 | VOLTS | difference between voltage measured at 10% and 50% IZM | 2 | ||
| Forward voltage | VF | 1.2 | Volts | at 1.0 A current | 1 | ||
| Steady state power dissipation | P(AV) | 5 | Watts | Lead temperature 75°C at mounting plane; derate linearly above 75°C to zero at 150°C | 1 | ||
| Operating and storage temperature | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Thermal resistance, junction to lead | RθJL | 15 | °C/W | 1 | |||
| Thermal resistance, junction to ambient | RθJA | 90 | °C/W | 1 | |||
| Nominal zener voltage | VZ | 12 | VOLTS | at IZT = 100 mA | 2 | ||
| Test current | IZT | 100 | mA | 2 | |||
| Maximum soldering temperature | 260 | °C | for 10 seconds | 1 |
CAD (KiCad official)
- Symbol:
SMBJ5349B-TP - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj5349b-tp-etched.step/smbj5349b-tp-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj5349b-tp.step/smbj5349b-tp.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MCC(Micro Commercial Components) datasheet (5 pp, sha256
64cba779e9296de3, retrieved 2026-10-22, 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).