component
ZMM5223BPF
Public Made by Adomby adom
ST Semtech Zener Diodes, LL-34. 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
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownZMM5223BPF
ST Semtech · Zener Diodes · LL-34
ZMM5223BPF from ST Semtech, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| 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 (VZT) minimum | VZT | 2.57 | V | at IZT = 20 mA; tested with pulses tp = 20 ms; suffix B | 4 | ||
| Zener voltage (VZT) maximum | VZT | 2.83 | V | at IZT = 20 mA; tested with pulses tp = 20 ms; suffix B | 4 | ||
| Dynamic resistance ZZT maximum | ZZT | 30 | Ω | at IZT = 20 mA | 4 | ||
| Dynamic resistance ZZK maximum | ZZK | 1300 | Ω | at IZK = 0.25 mA | 4 | ||
| Reverse current IR maximum | IR | 75 | µA | at VR = 1 V | 4 | ||
| Forward voltage maximum | VF | 1.1 | V | at IF = 200 mA | 2 | ||
| Zener voltage tolerance (suffix B) | -5 | 5 | % | suffix B, ±5% zener voltage tolerance | 1 | ||
| Nominal zener voltage | VZnom | 2.7 | V | 4 | |||
| Power dissipation | Ptot | 500 | mW | Ta = 25℃; electrodes kept at ambient temperature | 1 | ||
| Junction temperature | Tj | 175 | ℃ | 1 | |||
| Storage temperature range | Tstg | -65 | 175 | ℃ | 1 | ||
| Thermal resistance junction to ambient | RθJA | 300 | ℃/W | valid provided electrodes are kept at ambient temperature | 1 |
CAD (KiCad official)
- Symbol:
ZMM5223BPF - Footprint:
Diode_SMD:D_MiniMELF - 3D model: LL-34 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST Semtech datasheet (6 pp, sha256
3a203cb42731a600, retrieved 2026-10-16, 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).