component

BZX55C18

Public Made by Adom

by adom

LGE Zener Diodes, DO-35. 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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BZX55C18

LGE · Zener Diodes · DO-35

BZX55C18 from LGE, in a DO-35. 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 LGE
Package DO-35
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 (BZX55C18 nominal 18 V) VZ 16.8 19.1 V at IZT = 5.0 mA; pulse, TJ more than 2 °C above TA (note 3) 2
Zener impedance (dynamic) at IZT ZZT 50 Ohms at IZT = 5.0 mA 2
Zener impedance at IZK ZZK 170 Ohms at IZK = 1.0 mA 2
Reverse leakage current IR 0.1 uA at VR = 14 V 2
Power dissipation Pd 500 mW 1
Maximum forward voltage VF 1 V IF = 100mA 1
Storage temperature range TSTG -65 200 °C 1
Operating junction temperature TJ 200 °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 Solder hot dip Tin(Sn) lead finish Cathode indicated by polarity band 1

CAD (KiCad official)

  • Symbol: BZX55C18
  • Footprint: Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal
  • 3D model: DO-35 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: LGE datasheet (2 pp, sha256 7b64aa8e03dd617e, retrieved 2026-10-21, 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