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Contents

README

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RB521S-40TE61

ROHM Semicon · Schottky Diodes · SOD-523

RB521S-40TE61 from ROHM Semicon, 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 ROHM Semicon
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
Forward voltage VF 0.16 0.26 0.3 V IF=10mA 1
Forward voltage VF 0.31 0.395 0.45 V IF=100mA 1
Forward voltage VF 0.41 0.495 0.54 V IF=200mA 1
Reverse current IR 3.5 20 μA VR=10V 1
Reverse current IR 13 90 μA VR=40V 1
Repetitive peak reverse voltage VRM 45 V Ta=25℃ 1
Reverse voltage (DC) VR 40 V Ta=25℃ 1
Average rectified forward current Io 200 mA Ta=25℃ 1
Forward current surge peak (60Hz/1cyc) IFSM 4 A Ta=25℃, 60Hz/1cyc 1
Storage temperature Tstg -55 150 ℃ Ta=25℃ 1
Junction temperature Tj 150 ℃ Ta=25℃ 1
ESD breakdown voltage ESD 10 kV C=100pF, R=1.5k; forward and reverse: 1 time 1

CAD (KiCad official)

  • Symbol: RB521S-40TE61
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523 (KiCad packages3D, STEP)
  • 3D model files: rb521s-40te61-etched.step / rb521s-40te61-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rb521s-40te61.step / rb521s-40te61.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (6 pp, sha256 78c21d0960141848, retrieved 2026-10-15, 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