component

SMBJ18A-13-F

Public Made by Adom

by adom

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

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SMBJ18A-13-F

Diodes Incorporated · TVS · SMB

SMBJ18A-13-F from Diodes Incorporated, in a SMB. 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 Cathode passive Cathode terminal marked by the cathode band on the unidirectional SMBJ18A, which has a reverse standoff voltage of 18.0V and a maximum clamping voltage of 29.2V at 20.5A.
2 A passive Anode terminal at the end opposite the cathode band of the unidirectional SMBJ18A, which is rated for 600W peak pulse power.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SMB
Category Circuit Protection
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
Breakdown Voltage VBR 20 23.3 V @ IT = 1.0 mA 3
Max Reverse Leakage IR 5 µA @ VRWM 3
Max Clamping Voltage VC 29.2 V @ Ipp = 20.5 A 3
Max Peak Pulse Current Ipp 20.5 A 3
Instantaneous Forward Voltage VF 3.5 V @ IPP = 35A, VBR<100V, unidirectional only 2
Reverse Standoff Voltage VRWM 18 V 3
Test Current IT 1 mA 3
Peak Pulse Power Dissipation PPK 600 W TA = +25°C, non repetitive current pulse 2
Peak Power Derating Above +25°C PDER 4.8 W/°C 2
Peak Forward Surge Current IFSM 100 A 8.3ms single half sine wave superimposed on rated load 2
Steady State Power Dissipation PM(AV) 5 W @ TL = +75°C 2
Operating Temperature Range TJ -55 150 °C 2
Storage Temperature Range TSTG -55 175 °C 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: Lead Free Plating (Matte Tin Finish). Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: SMBJ18A-13-F
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: smbj18a-13-f-etched.step / smbj18a-13-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj18a-13-f.step / smbj18a-13-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (6 pp, sha256 752945fa3acaf469, retrieved 2026-10-27, tier: manufacturer)
  • 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