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J5-MM1Z18B 2%

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GOODWORK Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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J5-MM1Z18B 2%

GOODWORK · Zener Diodes · SOD-123

J5-MM1Z18B 2% from GOODWORK, in a SOD-123. 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 end marked by the color band; the 18 V Zener (MM1Z18B, 17.64-18.36 V at IZT = 5 mA) is reverse biased with this pin positive.
2 A passive Anode, the end opposite the color band; in a 500 mW Zener the forward voltage is 0.9 V max at IF = 10 mA.

Key specifications

Parameter Value
Manufacturer GOODWORK
Package SOD-123
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 VZT (Min / Nom / Max) VZT 17.64 18 18.36 V at IZT = 5 mA; VZT tested with pulses (20 ms) 3
Dynamic impedance ZZT (max) ZZT 45 Ω at IZT = 5 mA 3
Reverse current IR (max) IR 0.1 μA at VR = 13 V 3
Forward voltage VF (max) VF 0.9 V at IF = 10 mA 1
Power dissipation Ptot Ptot 500 mW Ta = 25℃ 1
Junction temperature TJ TJ 150 ℃ 1
Storage temperature range Tstg Tstg -65 150 ℃ 1
Thermal resistance junction to ambient air RthA (max) RthA 340 ℃/W 1

CAD (KiCad official)

  • Symbol: J5-MM1Z18B 2%
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: j5-mm1z18b-2-etched.step / j5-mm1z18b-2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); j5-mm1z18b-2.step / j5-mm1z18b-2.glb are the bare package body.

Provenance

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

  • Datasheet: GOODWORK datasheet (5 pp, sha256 653d0581d0f1796a, retrieved 2026-10-17, 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