component

DDZX18C-13

Public Made by Adom

by adom

Diodes Incorporated Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DDZX18C-13

Diodes Incorporated · Zener Diodes · SOT-23

DDZX18C-13 from Diodes Incorporated, in a SOT-23. 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 A passive Zener anode, shown on the lower-left terminal of the top-view device schematic; the datasheet gives a 300mW power dissipation limit.
2 NC unconnected Lower-right terminal, drawn with no connection to the zener diode in the device schematic.
3 K passive Zener cathode, the single top terminal in the device schematic; DDZX18C has VZ of 17.42V min to 18.33V max at IZT = 10mA.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Diodes
Pins 3

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 VZ 17.42 18.33 V @ IZT = 10 mA; Note 8: measured <40 ms after power supplied 2
Maximum Zener impedance ZZT 23 Ω @ IZT = 10 mA, f = 1 kHz 2
Maximum Zener impedance ZZK 150 Ω @ IZK = 0.5 mA, f = 1 kHz 2
Maximum reverse current IR 0.05 µA @ VR = 14.0 V; Note 9: short duration pulse test 2
Power dissipation PD 300 mW Note 7: device mounted on FR-4 PCB with recommended pad layout 2
Thermal resistance, junction to ambient air RJA 417 C/W Note 7: device mounted on FR-4 PCB with recommended pad layout 2
Operating and storage temperature range TJ, TSTG -65 150 C 2
Forward voltage VF 0.9 V @ IF = 10 mA 2

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  Terminals: Finish - Matte Tin Annealed over Alloy 42 Leadframe. Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: DDZX18C-13
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ddzx18c-13-etched.step / ddzx18c-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddzx18c-13.step / ddzx18c-13.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (8 pp, sha256 f1abaaad1d27cb30, retrieved 2026-10-20, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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