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TCMM5Z3V3
Public Made by Adomby adom
Tak Cheong Zener Diodes, SOD-523. Pinout cross-checked by two models against the datasheet, 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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Contents
README
markdownTCMM5Z3V3
Tak Cheong · Zener Diodes · SOD-523
TCMM5Z3V3 from Tak Cheong, in a SOD-523. 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 of the zener diode (marked by the band); TCMM5Z3V3 has VZ 3.1 V min, 3.3 V nom, 3.5 V max at IZT = 5 mA. |
| 2 | A | passive | Anode of the zener diode; forward voltage is 1 V maximum at IF = 10 mA, and power dissipation is 200 mW maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Tak Cheong |
| Package | SOD-523 |
| 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 | 3.1 | 3.3 | 3.5 | V | IZT = 5 mA, TA = 25°C | 1 |
| Zener Impedance | ZZT | 95 | Ω | @ IZT = 5 mA | 1 | ||
| Zener Knee Impedance | ZZK | 1000 | Ω | @ IZK = 1 mA | 1 | ||
| Reverse Current | IR | 5 | μA | @ VR = 1 V | 1 | ||
| Forward Voltage | VF | 1 | V | IF = 10 mA, all types | 2 | ||
| Power Dissipation | PD | 200 | mW | TA = 25°C | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | TA = 25°C unless otherwise noted | 1 | |
| Operating Temperature Range | TOPR | -55 | 150 | °C | TA = 25°C unless otherwise noted | 1 | |
| Zener Test Current | IZT | 5 | mA | 1 | |||
| Zero-knee Test Current | IZK | 1 | mA | 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 | Matte Tin(Sn) Lead Finish Band Indicates Cathode | 1 |
CAD (KiCad official)
- Symbol:
TCMM5Z3V3 - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
tcmm5z3v3-etched.step/tcmm5z3v3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tcmm5z3v3.step/tcmm5z3v3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Tak Cheong datasheet (5 pp, sha256
e8cd27777a272e97, 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).