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RB521CM-30T2R

ROHM Semicon · Schottky Barrier Diodes (SBD) · SOD-923

RB521CM-30T2R from ROHM Semicon, in a SOD-923. 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 ROHM Semicon
Package SOD-923
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 VR 30 V Reverse direct voltage 1
Average rectified forward current Io 100 mA Glass epoxy mounted, 60Hz half sin waveform, resistive load 1
Peak forward surge current IFSM 0.5 A 60Hz half sin waveform, non-repetitive, one cycle, Ta=25℃ 1
Junction temperature Tj 150 ℃ 1
Storage temperature Tstg -40 150 ℃ 1
Forward voltage VF 0.35 V IF=10mA 1
Reverse current IR 10 μA VR=10V 1

CAD (KiCad official)

  • Symbol: RB521CM-30T2R
  • Footprint: Diode_SMD:D_SOD-923
  • 3D model: SOD-923 (KiCad packages3D, STEP)
  • 3D model files: rb521cm-30t2r-etched.step / rb521cm-30t2r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rb521cm-30t2r.step / rb521cm-30t2r.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (8 pp, sha256 b7b3c11bfdb65a5b, retrieved 2026-10-21, tier: manufacturer)
  • 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