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ZMM5254B_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.
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
markdownZMM5254B_R1_10001
PANJIT International · Zener Diodes · MiniMELF
ZMM5254B_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 (min) | VZ | 25.65 | 27 | 28.35 | V | ZMM5254B, Nom 27 V; test current IZT = 4.6 mA as printed in the table row | 2 |
| Standard voltage tolerance, suffix B | 5 | % | Printed as '+ 5%' for suffix B only; no minus limit printed | 2 | |||
| Max Zener Impedance ZZT @ IZT | ZZT | 41 | Ω (unit not printed in table) | IZT = 20 mA | 2 | ||
| Max Zener Impedance ZZK @ IZK | ZZK | 600 | Ω (unit not printed in table) | IZK = 0.25 mA | 2 | ||
| Max Reverse Leakage Current | IR | 0.1 | µA | VR = 21 V | 2 | ||
| Forward Voltage | VF | 1.1 | V | IF = 200 mA | 1 | ||
| Thermal Resistance Junction to Ambient Air | RJA | 0.3 | oC/mW | Leads at 10 mm from case kept at ambient temperature | 1 | ||
| Power Dissipation at TA = 25°C | PTOT | 500 | mW | TA = 25 OC; leads at 10 mm from case kept at ambient temperature | 1 | ||
| Operating Junction Temperature Range | TJ | -65 | 175 | OC | Operating junction temperature range | 1 | |
| Storage Temperature Range | TSTG | -65 | 175 | OC | Storage temperature range | 1 |
CAD (KiCad official)
- Symbol:
ZMM5254B_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
08715dfa60e7114d, retrieved 2026-10-13, 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).