component
SMZ12
Public Made by Adomby adom
(DIOTEC) Zener Diodes, DO-213AB. 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.
Contents
README
markdownSMZ12
(DIOTEC) · Zener Diodes · DO-213AB
SMZ12 from (DIOTEC), in a DO-213AB. 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | (DIOTEC) |
| Package | DO-213AB |
| 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, minimum | Vzmin | 11.4 | V | IZ = IZtest | 2 | ||
| Zener voltage, maximum | Vzmax | 12.7 | V | IZ = IZtest | 2 | ||
| Dynamic resistance | rzj | 4 | 7 | Ω | IZtest / f = 1 kHz | 2 | |
| Temperature coefficient of Z-voltage | αVZ | 5 | 10 | 10-4 /°C | 2 | ||
| Z-current, maximum | IZmax | 157 | mA | TA = 50°C | 2 | ||
| Power dissipation | Ptot | 2 | W | TA = 50°C, mounted on PCB with 50 mm² copper pad per terminal | 1 | ||
| Non repetitive peak power dissipation | PZSM | 60 | W | t < 1 ms | 1 | ||
| Max. operating junction temperature | Tj | 150 | °C | 1 | |||
| Storage temperature | TS | -50 | 175 | °C | 1 | ||
| Typ. thermal resistance junction to ambient | RthA | 45 | K/W | Tested with pulses | 1 | ||
| Typ. thermal resistance junction to terminal | RthT | 15 | K/W | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | copper pad per terminal, Montage auf Leiterplatte mit 50 mm2 Lötpad je Anschluss | 1 |
CAD (KiCad official)
- Symbol:
SMZ12 - Footprint:
Diode_SMD:D_MELF - 3D model: DO-213AB (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: (DIOTEC) datasheet (4 pp, sha256
89bc328a08047625, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).