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TCLLZ24VTR
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Tak Cheong Zener Diodes, LL-34. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TCLLZ24VTR
Tak Cheong · Zener Diodes · LL-34
TCLLZ24VTR 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, marked by the color band (blue) on the LL-34 body, denotes negative polarity; the zener operates with this pin positive relative to the anode in reverse breakdown (VZ 24 V nominal at IZT 5 mA for TCLLZ24V). |
| 2 | A | passive | Anode, the terminal opposite the cathode band on the LL-34 (Mini-MELF) package; forward voltage is 1.2 V maximum at IF = 200 mA. |
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 (nominal) | VZ | 24 | V | IZT = 5 mA | 2 | ||
| Zener Voltage Tolerance | -5 | 5 | % | standard tolerance on nominal zener voltage | 2 | ||
| Zener Test Current | IZT | 5 | mA | 2 | |||
| Zener Impedance | ZZT | 35 | Ω | @ IZT | 2 | ||
| Reverse Current | IR | 0.2 | µA | @ VR = 19 V | 2 | ||
| Reverse Voltage | VR | 19 | V | test voltage for IR | 2 | ||
| Forward Voltage | VF | 1.2 | V | IF = 200 mA | 2 | ||
| Power Dissipation | PD | 500 | mW | TA = 25°C | 1 | ||
| Storage Temperature Range | -65 | 175 | °C | TA = 25°C | 1 | ||
| Operating Junction Temperature | 175 | °C | TA = 25°C | 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) Terminal Finish Color band Indicates Negative Polarity | 1 |
CAD (KiCad official)
- Symbol:
TCLLZ24VTR - 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 2026-10-24, 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).
# TCLLZ24VTR
**Tak Cheong** · Zener Diodes · LL-34
TCLLZ24VTR 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, marked by the color band (blue) on the LL-34 body, denotes negative polarity; the zener operates with this pin positive relative to the anode in reverse breakdown (VZ 24 V nominal at IZT 5 mA for TCLLZ24V). |
| 2 | A | passive | Anode, the terminal opposite the cathode band on the LL-34 (Mini-MELF) package; forward voltage is 1.2 V maximum at IF = 200 mA. |
## 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 (nominal) | VZ | | 24 | | V | IZT = 5 mA | 2 |
| Zener Voltage Tolerance | | -5 | | 5 | % | standard tolerance on nominal zener voltage | 2 |
| Zener Test Current | IZT | | 5 | | mA | | 2 |
| Zener Impedance | ZZT | | | 35 | Ω | @ IZT | 2 |
| Reverse Current | IR | | | 0.2 | µA | @ VR = 19 V | 2 |
| Reverse Voltage | VR | | 19 | | V | test voltage for IR | 2 |
| Forward Voltage | VF | | | 1.2 | V | IF = 200 mA | 2 |
| Power Dissipation | PD | | | 500 | mW | TA = 25°C | 1 |
| Storage Temperature Range | | -65 | | 175 | °C | TA = 25°C | 1 |
| Operating Junction Temperature | | | | 175 | °C | TA = 25°C | 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) Terminal Finish Color band Indicates Negative Polarity | 1 |
## CAD (KiCad official)
- Symbol: `TCLLZ24VTR`
- 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](docs/tcllz24vtr-datasheet.pdf) (5 pp, sha256 `c5238b28a9543714`, retrieved 2026-10-24, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/tcllz24vtr-datasheet.pdf)