component
MMBZ5243B
Public Made by Adomby adom
Slkor(SLKORMICRO Elec.) Zener Diodes, SOT-23. 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.
README
markdownMMBZ5243B
Slkor(SLKORMICRO Elec.) · Zener Diodes · SOT-23
MMBZ5243B from Slkor(SLKORMICRO Elec.), in a SOT-23. 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 | A | passive | Anode of the zener diode, shown as pin 1 in the connection diagram; device is 13V nominal (12.35V to 13.65V at IZT=9.5mA). |
| 2 | NC | unconnected | No connection, marked 2 NC in the connection diagram. |
| 3 | K | passive | Cathode of the zener diode, shown as pin 3 in the connection diagram; maximum reverse leakage 0.5µA at VR=9.9V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
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 | 12.35 | 13 | 13.65 | V | @IZT=9.5mA | 2 |
| Zener Test Current | IZT | 9.5 | mA | 2 | |||
| Maximum Zener Impedance | ZZT | 13 | Ω | @IZT=9.5mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 600 | Ω | @IZK=0.25mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 0.5 | μA | VR=9.9V | 2 | ||
| Reverse Voltage for Leakage | VR | 9.9 | V | 2 | |||
| Forward Voltage | VF | 0.9 | V | IF=10mA | 1 | ||
| Power Dissipation | Pd | 350 | mW | Ta=25℃ | 1 | ||
| Thermal Resistance, Junction to Ambient Air | RθjA | 357 | ℃/W | 1 | |||
| Operating and Storage Temperature Range | Tj, Tstg | -65 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
MMBZ5243B - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbz5243b-etched.step/mmbz5243b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz5243b.step/mmbz5243b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor(SLKORMICRO Elec.) datasheet (4 pp, sha256
8096af577e1c32df, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).