component
SMBJ5343B
Public Made by Adomby adom
LGE Zener Diodes, SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+59@@ -0,0 +1,59 @@+# SMBJ5343B++**LGE** · Zener Diodes · SMB++SMBJ5343B 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, marked by the color band; regulator voltage VZ is 7.5 V at IZT = 175 mA for SMBJ5343B with 5 W power dissipation at TL = 25 °C. |+| 2 | A | passive | Anode end of the zener diode, with maximum forward voltage of 1.2 V at IF = 1.0 A. |++## 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 |+|---|---|---|---|---|---|---|---|+| Regulator Voltage tolerance | VZ | -5 | | 5 | % | Suffix B | 2 |+| Regulator Voltage | VZ | | 7.5 | | V | IZT = 175 mA | 2 |+| Maximum Dynamic Impedance | ZZ | | | 1.5 | OHMS | A&B Suffix | 2 |+| Maximum Reverse Current | IR | | | 10 | μA | @ VR = 5.7 V (B suffix) | 2 |+| Maximum Regulator Current | IZM | | | 630 | mA | B suffix | 2 |+| Maximum Dynamic Knee Impedance | Zzk | | | 200 | OHMS | @ 1.0 mA | 2 |+| Maximum Surge Current | IZSM | | | 10.7 | AMPS | Non-recurrent half-sine wave, 8.3 ms | 2 |+| Maximum Voltage Regulation | ΔVZ | | | 0.15 | VOLTS | Difference between voltage at 10% and 50% of IZM | 2 |+| Test Current | IZT | | 175 | | mA | | 2 |+| Power Dissipation | PD | | | 5 | W | TL = 25 °C | 1 |+| Maximum Forward Voltage | VF | | | 1.2 | V | IF = 1.0 A | 1 |+| Thermal Resistance, Junction to Ambient | RӨJA | | | 90 | °C/W | Mounted on FR4 PC board (1 oz Cu) with recommended footprint | 1 |+| Thermal Resistance, Junction to Lead | RӨJL | | | 25 | °C/W | Mounted on FR4 PC board (1 oz Cu) with recommended footprint | 1 |+| Operating and Storage Temperature Range | TJ, TSTG | -65 | | 150 | °C | | 1 |++## CAD (KiCad official)++- Symbol: `SMBJ5343B`+- Footprint: `Diode_SMD:D_SMB`+- 3D model: SMB (KiCad packages3D, STEP)+- 3D model files: `smbj5343b-etched.step` / `smbj5343b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj5343b.step` / `smbj5343b.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [LGE datasheet](docs/smbj5343b-datasheet.pdf) (3 pp, sha256 `9441d4af3ecff01f`, retrieved 2026-10-22, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).++[Datasheet PDF](docs/smbj5343b-datasheet.pdf)
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