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ZMM5248B
Public Made by Adomby adom
LGE Zener Diodes, LL-34. 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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README
markdownZMM5248B
LGE · Zener Diodes · LL-34
ZMM5248B from LGE, in a LL-34. 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 at the end of the LL-34 glass case; the Zener (VZ) is 17.1V min to 18.9V max at IZT=7.0mA for the ZMM5248B (18V nominal). |
| 2 | A | passive | Anode, the end opposite the color band; the datasheet gives a 500mW power dissipation limit and a junction temperature of 175 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | LL-34 |
| 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 | VZ | 17.1 | 18 | 18.9 | V | IZ=7.0mA | 2 |
| Zener Voltage Tolerance | -5 | 5 | % | Suffix B | 2 | ||
| Max Zener Impedance | ZZT | 21 | Ω | IZT=7.0mA | 2 | ||
| Max Zener Knee Impedance | ZZK | 600 | Ω | IZK=0.25mA | 2 | ||
| Reverse Leakage Current | IR | 0.1 | uA | VR=14.0V | 2 | ||
| Forward Voltage | VF | 1.1 | V | IF=200mA | 2 | ||
| Power Dissipation | Pd | 500 | mW | 1 | |||
| Operating junction temperature | Tj | 175 | °C | 1 | |||
| Storage temperature range | Ts | -65 | 175 | °C | 1 |
CAD (KiCad official)
- Symbol:
ZMM5248B - Footprint:
Diode_SMD:D_MiniMELF - 3D model: LL-34 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (3 pp, sha256
a273cd0042ff9dec, 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).