component
ZMM5231B_R1_10001
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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ZMM5231B_R1_10001
PANJIT International · Zener Diodes · MiniMELF
ZMM5231B_R1_10001 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage | VZ | 5.1 | V | @ IZT = 20 mA | 2 | ||
| Zener Voltage (min/max) | VZ | 4.85 | 5.36 | V | @ IZT = 20 mA | 2 | |
| Voltage Tolerance (B suffix) | -5 | 5 | % | Suffix B | 2 | ||
| Maximum Zener Impedance | ZZT | 17 | ohm | @ IZT = 20 mA | 2 | ||
| Maximum Zener Knee Impedance | ZZK | 1600 | ohm | @ IZK = 0.25 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | uA | @ VR = 2 V | 2 | ||
| Forward Voltage | VF | 1.1 | V | IF = 200mA | 1 | ||
| Thermal Resistance Junction to Ambient Air | RJA | 0.3 | oC/mW | Leads at 10mm from case kept at ambient temperature | 1 | ||
| Power Dissipation | PTOT | 500 | mW | TA = 25 oC | 1 | ||
| Operating Junction Temperature Range | TJ | -65 | 175 | oC | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | oC | 1 |
CAD (KiCad official)
- Symbol:
ZMM5231B_R1_10001 - 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
0bcff4babd1c28df, retrieved 2026-10-22, 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).
# ZMM5231B_R1_10001
**PANJIT International** · Zener Diodes · MiniMELF
ZMM5231B_R1_10001 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage | VZ | | 5.1 | | V | @ IZT = 20 mA | 2 |
| Zener Voltage (min/max) | VZ | 4.85 | | 5.36 | V | @ IZT = 20 mA | 2 |
| Voltage Tolerance (B suffix) | | -5 | | 5 | % | Suffix B | 2 |
| Maximum Zener Impedance | ZZT | | | 17 | ohm | @ IZT = 20 mA | 2 |
| Maximum Zener Knee Impedance | ZZK | | | 1600 | ohm | @ IZK = 0.25 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 5 | uA | @ VR = 2 V | 2 |
| Forward Voltage | VF | | | 1.1 | V | IF = 200mA | 1 |
| Thermal Resistance Junction to Ambient Air | RJA | | | 0.3 | oC/mW | Leads at 10mm from case kept at ambient temperature | 1 |
| Power Dissipation | PTOT | | | 500 | mW | TA = 25 oC | 1 |
| Operating Junction Temperature Range | TJ | -65 | | 175 | oC | | 1 |
| Storage Temperature Range | TSTG | -65 | | 175 | oC | | 1 |
## CAD (KiCad official)
- Symbol: `ZMM5231B_R1_10001`
- 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](docs/zmm5231b-r1-10001-datasheet.pdf) (6 pp, sha256 `0bcff4babd1c28df`, retrieved 2026-10-22, 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/zmm5231b-r1-10001-datasheet.pdf)