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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, 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