component

1N4148WS-AQ

Public Made by Adom

by adom

DIOTEC Switching Diodes, SOD-323. 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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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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1N4148WS-AQ

DIOTEC · Switching Diodes · SOD-323

1N4148WS-AQ from DIOTEC, in a SOD-323. 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 DIOTEC
Package SOD-323
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
Forward voltage VF 0.715 V Tj = 25°C, IF = 1 mA 2
Forward voltage VF 0.855 V Tj = 25°C, IF = 10 mA 2
Forward voltage VF 1 V Tj = 25°C, IF = 50 mA 2
Forward voltage VF 1.25 V Tj = 25°C, IF = 150 mA 2
Leakage current IR 25 nA Tj = 25°C, VR = 20 V 2
Leakage current IR 1 µA Tj = 25°C, VR = 75 V 2
Leakage current IR 30 µA Tj = 125°C, VR = 20 V 2
Leakage current IR 50 µA Tj = 125°C, VR = 75 V 2
Reverse recovery time trr 4 ns IF = 10 mA through IR = 10 mA to IR = 1 mA 2
Junction capacitance CT 2 pF VR = 0 V, f = 1 MHz 2
Thermal resistance junction to ambient RthA 620 K/W Mounted on P.C. board with 3 mm2 copper pad at each terminal 2
Power dissipation Ptot 200 mW TA = 25°C, mounted on P.C. board with 3 mm2 copper pad at each terminal 1
Max. average forward current IFAV 150 mA TA = 25°C, mounted on P.C. board with 3 mm2 copper pad at each terminal 1
Repetitive peak forward current IFRM 300 mA TA = 25°C, mounted on P.C. board with 3 mm2 copper pad at each terminal 1
Non repetitive peak forward surge current IFSM 350 mA tp ≤ 1 s, TA = 25°C 1
Non repetitive peak forward surge current IFSM 1 A tp ≤ 1 µs, TA = 25°C 1
Reverse voltage DC VR 75 V TA = 25°C 1
Repetitive peak reverse voltage VRRM 100 V TA = 25°C 1
Junction temperature Tj -55 150 °C 1
Storage temperature TS -55 150 °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 copper copper pad at each terminal, Montage auf Leiterplatte mit 3 mm2 1

CAD (KiCad official)

  • Symbol: 1N4148WS-AQ
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: 1n4148ws-aq-etched.step / 1n4148ws-aq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1n4148ws-aq.step / 1n4148ws-aq.glb are the bare package body.

Provenance

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

  • Datasheet: DIOTEC datasheet (3 pp, sha256 4de965ace23f0593, retrieved 2026-10-22, 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