component
RB508FM-40FHT106
Public Made by Adomby adom
ROHM Semicon Schottky Barrier Diodes (SBD), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRB508FM-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rb508fm-40fht106.step/rb508fm-40fht106.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).