component

RB491D

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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Generated by kicad-footprint-generator · KiCad file format 20260206
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rb491d-etched.glb Publish 0.1.0 · Ray 10d ago
rb491d-etched.step rb491d: factory component page (tier=lcsc) · Ray 10d ago
rb491d-hero.glb rb491d: hero GLB from the etched model (keeps the MPN mark) · Ray 10d ago
rb491d-hero.overlay.json Publish 0.1.0 · Ray 10d ago
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RB491D

Changjing · Schottky Diodes · SOT-23

RB491D 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 single Schottky diode (symbol shows pin 1 on the anode side), rated for 1 A mean rectifying current and 20 V DC reverse voltage.
2 NC unconnected Not connected to the diode; the package symbol shows pin 2 as an open circle with no connection.
3 K passive Cathode of the single Schottky diode (symbol shows the diode pointing toward pin 3), with 0.45 V max forward voltage at IF=1 A.

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
Forward voltage VF 0.45 V IF=1A 1
Reverse current IR 200 μA VR=20V 1
Peak reverse voltage VRM 25 V 1
DC reverse voltage VR 20 V 1
Mean rectifying current IF 1 A 1
Peak forward surge current IFSM 3 A 1
Junction temperature Tj 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: RB491D
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: rb491d-etched.step / rb491d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rb491d.step / rb491d.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (1 pp, sha256 c0f2cffc8d6d6e0e, retrieved 2026-10-16, 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