component
TCZM4736ATR
Public Made by Adomby adom
Tak Cheong Zener Diodes, LL-41. 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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTCZM4736ATR
Tak Cheong · Zener Diodes · LL-41
TCZM4736ATR from Tak Cheong, in a LL-41. 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 | Tak Cheong |
| Package | LL-41 |
| 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 tolerance (A suffix, ±5%) | VZ | -5 | 5 | % | 2 | ||
| Max zener knee current | IZK | 1 | mA | 1 | |||
| Max reverse leakage current | IR | 10 | µA | @ VR = 4 V | 1 | ||
| Max forward voltage | VF | 1.2 | V | @ IF = 200 mA | 2 | ||
| Storage temperature range | -65 | 200 | °C | 1 | |||
| Maximum junction operating temperature | TJ | 175 | °C | 1 | |||
| Total device dissipation | 1 | W | TA = 25°C | 1 | |||
| Nominal zener voltage | VZ | 6.8 | V | @ IZT (37 mA) | 1 | ||
| Nominal zener test current | IZT | 37 | mA | 1 | |||
| Zener impedance at IZT | ZZT | 3.5 | Ω | @ IZT (37 mA) | 1 | ||
| Zener impedance at IZK | ZZK | 700 | Ω | @ IZK | 1 | ||
| Thermal resistance junction to ambient | 170 | °C/W | junction to ambient | 1 |
CAD (KiCad official)
- Symbol:
TCZM4736ATR - Footprint:
Diode_SMD:D_MELF - 3D model: LL-41 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Tak Cheong datasheet (3 pp, sha256
7bb75ebdfa147e19, retrieved 2026-10-15, 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).