component

RB508FM-40FHT106

Public Made by Adom

by adom

ROHM Semicon Schottky Barrier Diodes (SBD), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RB508FM-40FHT106

ROHM Semicon · Schottky Barrier Diodes (SBD) · SOT-323

RB508FM-40FHT106 from ROHM Semicon, in a SOT-323. 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 diode (VR 40 V, Io 80 mA, IFSM 1 A).
2 N/C unconnected No internal connection.
3 K passive Cathode of the Schottky diode (VR 40 V, Io 80 mA, IFSM 1 A).

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package SOT-323
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 1 VF1 0.51 0.59 V IF=1mA, Tj=-40℃ 2
Forward voltage 2 VF2 0.56 0.62 V IF=10mA, Tj=-40℃ 2
Forward voltage 3 VF3 0.61 0.66 V IF=40mA, Tj=-40℃ 2
Forward voltage 4 VF4 0.4 0.48 V IF=1mA, Tj=25℃ 2
Forward voltage 5 VF5 0.47 0.53 V IF=10mA, Tj=25℃ 2
Forward voltage 6 VF6 0.54 0.59 V IF=40mA, Tj=25℃ 2
Reverse current 1 IR1 2 35 nA VR=30V, Tj=25℃ 2
Reverse current 2 IR2 15 260 μA VR=30V, Tj=150℃ 2
Reverse current 3 IR3 20 340 μA VR=40V, Tj=150℃ 2
Repetitive peak reverse voltage VRM 40 V Duty≦0.5 1
Reverse voltage VR 40 V Direct reverse voltage 1
Forward current IF 120 mA Direct reverse voltage, per diode 1
Average rectified forward current Io 80 mA Glass epoxy mounted, 60Hz half sin waveform, resistive load, per diode 1
Peak forward surge current IFSM 1 A 60Hz half sin waveform, Non-repetitive, one cycle, Ta=25℃ 1
Junction temperature Tj 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: RB508FM-40FHT106
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: rb508fm-40fht106-etched.step / rb508fm-40fht106-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rb508fm-40fht106.step / rb508fm-40fht106.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (7 pp, sha256 c7732cfb393fd14a, retrieved 2026-10-24, tier: manufacturer)
  • 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