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Contents

README

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RR1LAM4STFTR

ROHM Semicon · Fast Recovery / High Efficiency Diodes · SOD-128

RR1LAM4STFTR 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 K passive Cathode (pin (2) in the datasheet outline is marked Anode, pin (1) Cathode per the package drawing); rectifier with VRM 500 V, VR 400 V, Io 1 A.
2 A passive Anode of the rectifying diode; forward voltage 1.1 V max at IF=1A.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package SOD-128
Category Diodes
Pins 2

CAD (KiCad official)

  • Symbol: RR1LAM4STFTR
  • Footprint: Diode_SMD:D_SOD-128
  • 3D model: SOD-128 (KiCad packages3D, STEP)
  • 3D model files: rr1lam4stftr-etched.step / rr1lam4stftr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rr1lam4stftr.step / rr1lam4stftr.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (7 pp, sha256 10e04eee138c6eeb, retrieved 2026-10-13, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF