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1SS344

Public Made by Adom

by adom

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

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1SS344

Changjing · Schottky Diodes · SOT-23

1SS344 from Changjing, 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 Anode of the Schottky barrier diode, shown connected through the diode symbol to pin 3 (20 V DC blocking voltage, 500 mA continuous forward current).
2 NC unconnected Not connected internally; shown as an open terminal with no connection to the diode in the package schematic.
3 K passive Cathode of the Schottky barrier diode, shown on the bar side of the diode symbol (20 V DC blocking voltage, 1.5 A peak forward current).

Key specifications

Parameter Value
Manufacturer Changjing
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
DC Blocking Voltage VR 20 V 1
Forward Continuous Current IO 500 mA 1
Peak Forward Current IFM 1.5 A 1
Non-repetitive Peak Forward Surge Current IFSM 5 A t=8.3ms 1
Power Dissipation PD 200 mW 1
Junction Temperature Tj 125 ℃ 1
Storage Temperature Tstg -55 150 ℃ 1
Thermal Resistance From Junction To Ambient RθJA 500 ℃/W 1
Reverse voltage V(BR) 20 V IR=100μA 1
Reverse current IR 20 μA VR=10V 1
Reverse current IR 100 μA VR=20V 1
Forward voltage VF 0.35 V IF=10mA 1
Forward voltage VF 0.43 V IF=100mA 1
Forward voltage VF 0.55 V IF=500mA 1
Total capacitance Ctot 120 pF VR=0V, f=1MHz 1
Reverse recovery time trr 20 ns IF= IR=50mA, VR=6V 1

CAD (KiCad official)

  • Symbol: 1SS344
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: 1ss344-etched.step / 1ss344-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1ss344.step / 1ss344.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 33c2179612e5cb7b, 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