component
ZMM55-C18_R1_00001
Public Made by Adomby adom
PANJIT International Zener Diodes, MiniMELF. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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ZMM55-C18_R1_00001
PANJIT International · Zener Diodes · MiniMELF
ZMM55-C18_R1_00001 from PANJIT International, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| 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 |
|---|---|---|---|---|---|---|---|
| Tolerance (standard, no suffix; note: suffix C = +5%) | -5 | 5 | % | 2 | |||
| Nominal Zener voltage (Nom. V 18 V; Min 16.8 V, Max 19.1 V) | 16.8 | 18 | 19.1 | V | IZT = 5 mA | 2 | |
| Max. Zener impedance | ZZT | 50 | Ω | IZT = 5 mA | 2 | ||
| Max. Zener impedance (knee) | ZZK | 170 | Ω | IZK = 1 mA | 2 | ||
| Max. reverse leakage current | IR | 0.1 | μA | VR = 14 V | 2 | ||
| Forward voltage | VF | 1.5 | V | IF = 200 mA | 1 | ||
| Power dissipation | PTOT | 500 | mW | TA = 25 °C | 1 | ||
| Operating junction temperature range | TJ | -65 | 175 | °C | 1 | ||
| Storage temperature range | TS | -65 | 175 | °C | 1 | ||
| Thermal resistance junction to ambient air | RθJA | 0.3 | °C/mW | 1 |
CAD (KiCad official)
- Symbol:
ZMM55-C18_R1_00001 - Footprint:
Diode_SMD:D_MiniMELF - 3D model: MiniMELF (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (6 pp, sha256
b27a20298e93fd28, retrieved 2026-10-15, 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).
# ZMM55-C18_R1_00001
**PANJIT International** · Zener Diodes · MiniMELF
ZMM55-C18_R1_00001 from PANJIT International, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| 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 |
|---|---|---|---|---|---|---|---|
| Tolerance (standard, no suffix; note: suffix C = +5%) | | -5 | | 5 | % | | 2 |
| Nominal Zener voltage (Nom. V 18 V; Min 16.8 V, Max 19.1 V) | | 16.8 | 18 | 19.1 | V | IZT = 5 mA | 2 |
| Max. Zener impedance | ZZT | | | 50 | Ω | IZT = 5 mA | 2 |
| Max. Zener impedance (knee) | ZZK | | | 170 | Ω | IZK = 1 mA | 2 |
| Max. reverse leakage current | IR | | | 0.1 | μA | VR = 14 V | 2 |
| Forward voltage | VF | | | 1.5 | V | IF = 200 mA | 1 |
| Power dissipation | PTOT | | | 500 | mW | TA = 25 °C | 1 |
| Operating junction temperature range | TJ | -65 | | 175 | °C | | 1 |
| Storage temperature range | TS | -65 | | 175 | °C | | 1 |
| Thermal resistance junction to ambient air | RθJA | | | 0.3 | °C/mW | | 1 |
## CAD (KiCad official)
- Symbol: `ZMM55-C18_R1_00001`
- Footprint: `Diode_SMD:D_MiniMELF`
- 3D model: MiniMELF (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [PANJIT International datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588904422311407617) (6 pp, sha256 `b27a20298e93fd28`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/zmm55-c18-r1-00001-datasheet.pdf)