component
TCZM4735AR13
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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Contents
README
markdownTCZM4735AR13
Tak Cheong · Zener Diodes · LL-41
TCZM4735AR13 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 | % | Standard tolerance on nominal zener voltage; ±2% is indicated by 'C' suffix | 2 | |
| Reverse leakage current | IR | 10 | µA | @ VR = 3 V | 1 | ||
| Max zener knee current | IZK | 1 | mA | 1 | |||
| Forward voltage | VF | 1.2 | V | IF = 200 mA, for all types | 2 | ||
| Total device dissipation | 1 | W | 1 | ||||
| Storage temperature range | -65 | 200 | °C | 1 | |||
| Maximum junction operating temperature | 175 | °C | 1 | ||||
| Thermal resistance junction to ambient | 170 | °C/W | 1 | ||||
| Maximum reverse test voltage (IR test point) | VR | 3 | V | 1 | |||
| Nominal zener voltage | VZ | 6.2 | V | @ IZT | 1 | ||
| Zener impedance | ZZT | 2 | Ω | @ IZT | 1 | ||
| Zener impedance at knee current | ZZK | 700 | Ω | @ IZK | 1 | ||
| Nominal zener test current | IZT | 41 | 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 Color band Indicates Negative Polarity | 1 |
CAD (KiCad official)
- Symbol:
TCZM4735AR13 - 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 2026-10-21, 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).