component
TCZM4740AR13
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.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 11d ago |
| viewers | 11d ago |
| package.json | 11d ago |
| page.json | 11d ago |
| README.md | 11d ago |
| tczm4740ar13-hero.glb | 11d ago |
| tczm4740ar13-hero.overlay.json | 11d ago |
| tczm4740ar13.glb | 11d ago |
| tczm4740ar13.kicad_mod | 11d ago |
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| tczm4740ar13.lbr | 11d ago |
| tczm4740ar13.step | 11d ago |
TCZM4740AR13
Tak Cheong · Zener Diodes · LL-41
TCZM4740AR13 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 |
|---|---|---|---|---|---|---|---|
| Storage temperature range | TSTG | -65 | 200 | °C | 1 | ||
| Zener voltage tolerance (A suffix) | VZ | -5 | 5 | % | Standard tolerance on nominal VZ; A suffix = ±5% (C suffix would be ±2%) | 2 | |
| Maximum junction operating temperature | TJ | 175 | °C | 1 | |||
| Total device dissipation | PD | 1 | W | 1 | |||
| Maximum knee current | IZK | 0.25 | mA | 1 | |||
| Reverse leakage current | IR | 10 | μA | @ VR = 7.6 V | 1 | ||
| Forward voltage | VF | 1.2 | V | @ IF = 200 mA | 2 | ||
| Nominal zener voltage | VZ | 10 | V | @ IZT = 25 mA, pulse tested | 1 | ||
| Thermal resistance junction to ambient | RθJA | 170 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
TCZM4740AR13 - 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).