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ZMM55B3V3
Public Made by Adomby adom
LGE Zener Diodes, MiniMELF. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ZMM55B3V3
LGE · Zener Diodes · MiniMELF
ZMM55B3V3 from LGE, in a MiniMELF. 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, indicated by the cathode band; zener diode terminal with a 3.3V nominal zener voltage (3.23V to 3.37V) at 5.0mA test current. |
| 2 | A | passive | Anode terminal of the zener diode, opposite the cathode band; forward voltage max 1.5V at IF = 200mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | MiniMELF |
| 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 | 3.23 | 3.3 | 3.37 | V | IZT = 5.0 mA | 2 |
| Zener voltage tolerance | -2 | 2 | % | 2% tolerance of Zener voltage | 2 | ||
| Zener impedance | ZZT | 85 | OHMs | IZT = 5.0 mA | 2 | ||
| Zener impedance (knee) | ZZK | 600 | OHMs | IZK = 1.0 mA | 2 | ||
| Forward voltage | VF | 1.5 | V | IF = 200mA | 1 | ||
| Power dissipation | PD | 500 | mW | 1 | |||
| Storage temperature | TSTG | -55 | 175 | °C | 1 | ||
| Operating junction temperature | TJ | -55 | 150 | °C | 1 | ||
| Zener test current | IZT | 5 | mA | 2 |
CAD (KiCad official)
- Symbol:
ZMM55B3V3 - Footprint:
Diode_SMD:D_MiniMELF - 3D model: MiniMELF (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (5 pp, sha256
8b20a59960aa5b4b, 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).
# ZMM55B3V3
**LGE** · Zener Diodes · MiniMELF
ZMM55B3V3 from LGE, in a MiniMELF. 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, indicated by the cathode band; zener diode terminal with a 3.3V nominal zener voltage (3.23V to 3.37V) at 5.0mA test current. |
| 2 | A | passive | Anode terminal of the zener diode, opposite the cathode band; forward voltage max 1.5V at IF = 200mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | MiniMELF |
| 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 | 3.23 | 3.3 | 3.37 | V | IZT = 5.0 mA | 2 |
| Zener voltage tolerance | | -2 | | 2 | % | 2% tolerance of Zener voltage | 2 |
| Zener impedance | ZZT | | | 85 | OHMs | IZT = 5.0 mA | 2 |
| Zener impedance (knee) | ZZK | | | 600 | OHMs | IZK = 1.0 mA | 2 |
| Forward voltage | VF | | | 1.5 | V | IF = 200mA | 1 |
| Power dissipation | PD | | | 500 | mW | | 1 |
| Storage temperature | TSTG | -55 | | 175 | °C | | 1 |
| Operating junction temperature | TJ | -55 | | 150 | °C | | 1 |
| Zener test current | IZT | | 5 | | mA | | 2 |
## CAD (KiCad official)
- Symbol: `ZMM55B3V3`
- Footprint: `Diode_SMD:D_MiniMELF`
- 3D model: MiniMELF (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [LGE datasheet](docs/zmm55b3v3-datasheet.pdf) (5 pp, sha256 `8b20a59960aa5b4b`, 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/zmm55b3v3-datasheet.pdf)