component

B1040X

Public Made by Adom

by adom

Changjing Schottky Barrier Diodes (SBD), SOD-523. 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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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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b1040x-hero.glb b1040x: hero GLB from the etched model (keeps the MPN mark) · Ray 7d ago
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B1040X

Changjing · Schottky Barrier Diodes (SBD) · SOD-523

B1040X from Changjing, in a SOD-523. 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 Changjing
Package SOD-523
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
Reverse voltage VBR 40 V IR =1mA 1
Reverse current IR 10 40 µA VR =40V 1
Forward voltage VF 0.35 0.38 V IF =0.1A 1
Forward voltage VF 0.37 0.4 V IF =0.2A 1
Forward voltage VF 0.42 0.49 V IF =0.5A 1
Forward voltage VF 0.47 0.55 V IF =0.7A 1
Forward voltage VF 0.51 0.61 V IF =1A 1
Total capacitance Ctot 19 pF VR=10V, f=1MHz 1
DC reverse voltage VR 40 V 1
Mean rectifying current IO 1 A 1
Non-repetitive Peak Forward Surge Current IFSM 7 A t=8.3ms 1
Power Dissipation PD 0.5 W 1
Thermal Resistance from Junction to Ambient RθJA 250 ℃/W 1
Operating Junction Temperature Range TJ -40 125 ℃ 1
Storage Temperature Range TSTG -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: B1040X
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523 (KiCad packages3D, STEP)
  • 3D model files: b1040x-etched.step / b1040x-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); b1040x.step / b1040x.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 93c24fd88ef2cede, 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