component
RR1LAM4STR
Public Made by Adomby adom
ROHM Semicon Diodes - General Purpose, SOD-128. 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
markdownRR1LAM4STR
ROHM Semicon · Diodes - General Purpose · SOD-128
RR1LAM4STR from ROHM Semicon, in a SOD-128. 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 | Cathode | passive | Cathode terminal (pin 1) of the rectifying diode; rated for repetitive peak reverse voltage VRM 500 V and direct reverse voltage VR 400 V. |
| 2 | Anode | passive | Anode terminal (pin 2) of the rectifying diode; average forward rectified current Io is 1 A with forward voltage VF typ 0.92 V at IF=1 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOD-128 |
| 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 | 0.8 | 0.92 | 1.1 | V | IF=1A | 1 |
| Reverse current | IR | 10 | mA | VR=400V | 1 | ||
| Thermal resistance, junction to lead | Rth(j-l) | 25 | °C/W | Junction to lead | 1 | ||
| Non-repetitive forward surge current | IFSM | 30 | A | 60Hz half sin wave | 1 | ||
| Repetitive peak reverse voltage | VRM | 400 | V | 1 | |||
| Junction temperature | Tj | 150 | °C | 1 | |||
| Storage temperature | Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
RR1LAM4STR - Footprint:
Diode_SMD:D_SOD-128 - 3D model: SOD-128 (KiCad packages3D, STEP)
- 3D model files:
rr1lam4str-etched.step/rr1lam4str-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rr1lam4str.step/rr1lam4str.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ROHM Semicon datasheet (7 pp, sha256
c9f8730f73fd7b42, retrieved 2026-10-21, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).