component
TCLLZ43VTR
Public Made by Adomby adom
Tak Cheong Zener Diodes, LL-34. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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TCLLZ43VTR
Tak Cheong · Zener Diodes · LL-34
TCLLZ43VTR from Tak Cheong, in a LL-34. 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-34 |
| 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 (standard, nominal VZ) | VZ | -5 | 5 | % | Standard tolerance on nominal zener voltage (Note 1) | 2 | |
| Power Dissipation | PD | 500 | mW | TA = 25°C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Operating Junction Temperature | TJ | 175 | °C | 1 | |||
| Forward Voltage | VF | 1.2 | V | IF = 200 mA, for all types | 2 | ||
| Reverse Current | IR | 0.2 | A | VR = 33 V | 2 | ||
| Nominal Zener Voltage | VZ | 43 | V | IZT = 2 mA | 2 | ||
| Zener Test Current | IZT | 2 | mA | Nominal test current for TCLLZ43V | 2 | ||
| Zener Impedance | ZZT | 90 | Ω | IZT = 2 mA; 60-cycle AC, rms 10% of IZT superimposed (Note 3) | 2 |
CAD (KiCad official)
- Symbol:
TCLLZ43VTR - Footprint:
Diode_SMD:D_MiniMELF - 3D model: LL-34 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Tak Cheong datasheet (5 pp, sha256
c5238b28a9543714, 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).
# TCLLZ43VTR
**Tak Cheong** · Zener Diodes · LL-34
TCLLZ43VTR from Tak Cheong, in a LL-34. 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-34 |
| 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 (standard, nominal VZ) | VZ | -5 | | 5 | % | Standard tolerance on nominal zener voltage (Note 1) | 2 |
| Power Dissipation | PD | | | 500 | mW | TA = 25°C | 1 |
| Storage Temperature Range | TSTG | -65 | | 175 | °C | | 1 |
| Operating Junction Temperature | TJ | | | 175 | °C | | 1 |
| Forward Voltage | VF | | | 1.2 | V | IF = 200 mA, for all types | 2 |
| Reverse Current | IR | | | 0.2 | A | VR = 33 V | 2 |
| Nominal Zener Voltage | VZ | | 43 | | V | IZT = 2 mA | 2 |
| Zener Test Current | IZT | | 2 | | mA | Nominal test current for TCLLZ43V | 2 |
| Zener Impedance | ZZT | | 90 | | Ω | IZT = 2 mA; 60-cycle AC, rms 10% of IZT superimposed (Note 3) | 2 |
## CAD (KiCad official)
- Symbol: `TCLLZ43VTR`
- Footprint: `Diode_SMD:D_MiniMELF`
- 3D model: LL-34 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Tak Cheong datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588902616902881280) (5 pp, sha256 `c5238b28a9543714`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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).
[Datasheet PDF](docs/tcllz43vtr-datasheet.pdf)