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3SMB5942B
Public Made by Adomby adom
LGE Diodes - General Purpose, SMB. Pinout cross-checked by two models against the datasheet, 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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Contents
README
markdown3SMB5942B
LGE · Diodes - General Purpose · SMB
3SMB5942B from LGE, 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 end of the zener diode, marked by the color band; the 3SMB5942B has a nominal VZ of 51 V at IZT = 7.3 mA. |
| 2 | A | passive | Anode terminal of the zener diode; maximum forward voltage is 1.5 V at IF = 200 mA and DC power dissipation is 3.0 W at TL = 75 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage tolerance (suffix B) | VZ | -5 | 5 | % | Suffix B indicates ±5.0% tolerance | 2 | |
| Nominal Zener Voltage | VZ | 51 | V | @ IZT = 7.3 mA | 2 | ||
| Zener Test Current | IZT | 7.3 | mA | 2 | |||
| Maximum Zener Impedance | ZZT | 70 | Ω | @ IZT = 7.3 mA | 2 | ||
| Maximum Zener Knee Impedance | ZZK | 1100 | Ω | @ IZK = 0.25 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 1 | μA | @ VR = 38.8 V | 2 | ||
| Maximum DC Zener Current | IZM | 29 | mA | 2 | |||
| DC Power Dissipation | PD | 3 | Watts | TL = 75 °C (Note 1) | 1 | ||
| Maximum Forward Voltage | VF | 1.5 | Volts | IF = 200 mA | 1 | ||
| Junction Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Storage Temperature Range | Ts | -55 | 150 | °C | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | (1) TL = Lead temperature at 5.0 mm2 ( 0.013 mm thick ) copper land areas. | 1 |
CAD (KiCad official)
- Symbol:
3SMB5942B - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
3smb5942b-etched.step/3smb5942b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);3smb5942b.step/3smb5942b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (5 pp, sha256
3b15c982b0998b75, retrieved 2026-10-22, tier: lcsc) - 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).