component
SZMM3Z43VT1G
Public Made by Adomby adom
onsemi Zener Diodes, SOD-323. Pinout cross-checked by two models against the datasheet, 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
markdownSZMM3Z43VT1G
onsemi · Zener Diodes · SOD-323
SZMM3Z43VT1G from onsemi, in a SOD-323. 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 | Cathode | passive | Cathode of the Zener diode, marked by the polarity band; the 43 V part has VZ of 40 V min, 43 V nom and 46 V max at IZT = 2 mA. |
| 2 | Anode | passive | Anode of the Zener diode; maximum forward voltage is 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOD-323 |
| 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 | VZ | 40 | 43 | 46 | V | @ IZT = 2 mA, TA = 25°C | 2 |
| Maximum Zener Impedance | ZZT | 150 | Ω | @ IZT = 2 mA | 2 | ||
| Maximum Zener Impedance | ZZK | 500 | Ω | @ IZK = 0.5 mA | 2 | ||
| Reverse Leakage Current | IR | 0.05 | µA | @ VR = 30.1 V | 2 | ||
| Temperature Coefficient of VZ | VZ | 37.6 | 46.6 | mV/K | @ IZT = 2 mA | 2 | |
| Forward Voltage | VF | 0.9 | V | @ IF = 10 mA | 2 | ||
| Maximum Capacitance | C | 40 | pF | @ VR = 0, f = 1 MHz | 2 | ||
| Total Device Dissipation | PD | 300 | mW | FR-4 Board, TA = 25°C | 1 | ||
| Power Derating above 25°C | PD | 2.4 | mW/°C | Derate above 25°C | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RJA | 416 | °C/W | 1 | |||
| Junction and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 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 | tin | LEADS: Plated with Pb−Sn or Sn Only (Pb−Free) POLARITY: Cathode Indicated by Polarity Band | 1 |
CAD (KiCad official)
- Symbol:
SZMM3Z43VT1G - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
szmm3z43vt1g-etched.step/szmm3z43vt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szmm3z43vt1g.step/szmm3z43vt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (6 pp, sha256
64e3f1272dbd5417, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).