component
SMBJ5343B-MS
Public Made by Adomby adom
MSKSEMI 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.
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
markdownSMBJ5343B-MS
MSKSEMI · Zener Diodes · SMB
SMBJ5343B-MS from MSKSEMI, 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 | MSKSEMI |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage | VZ | 7.5 | V | IZ=175mA, 25°C | 3 | ||
| Zener Voltage Tolerance | -5 | 5 | % | on nominal VZ | 4 | ||
| Test Current | IZ | 175 | mA | 3 | |||
| Maximum Dynamic Impedance | ZZT | 1.5 | Ω | at IZT | 3 | ||
| Maximum Reverse Current | IR | 10 | µA | VR=5.7V | 3 | ||
| Test Voltage | VR | 5.7 | V | 3 | |||
| Maximum Regulator Current | IZM | 630 | mA | 3 | |||
| Maximum Dynamic Knee Impedance | ZZK | 200 | Ω | IZK=1.0mA | 3 | ||
| Maximum Surge Current | IZSM | 10.7 | A | 8.3ms nonrecurring sine wave | 3 | ||
| Maximum Voltage Regulation | ΔVZ | 0.15 | V | between 10% and 50% IZM | 3 | ||
| Maximum Forward Voltage | VF | 1.2 | V | IF=1.0A | 2 | ||
| Steady State Power Dissipation | P(AV) | 5 | W | Note 3: TL=75°C, derate linearly to zero at 150°C | 2 | ||
| Operating Junction Temperature Range | TJ | -55 | 150 | °C | 2 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 2 | ||
| Thermal Resistance Junction to Lead | 15 | °C/W | 2 | ||||
| Thermal Resistance Junction to Ambient | 90 | °C/W | Note 2 | 2 |
CAD (KiCad official)
- Symbol:
SMBJ5343B-MS - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smbj5343b-ms-etched.step/smbj5343b-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj5343b-ms.step/smbj5343b-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (6 pp, sha256
fdbb089c9980bb8a, 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).