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SF34

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MDD Microdiode Semiconductor Fast Recovery / High Efficiency Diodes, DO-201AD. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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SF34

MDD Microdiode Semiconductor · Fast Recovery / High Efficiency Diodes · DO-201AD

SF34 from MDD Microdiode Semiconductor, in a DO-201AD. 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 MDD Microdiode Semiconductor
Package DO-201AD
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
Maximum repetitive peak reverse voltage (SF34 column) VRRM 200 V 1
Maximum RMS voltage (SF34 column) VRMS 140 V 1
Maximum DC blocking voltage (SF34 column) VDC 200 V 1
Maximum average forward rectified current I(AV) 3 A at TA=55℃ 1
Peak forward surge current IFSM 125 A 8.3ms single half sine-wave, superimposed on rated load (JEDEC Method) 1
Maximum DC reverse current IR 10 μA TA=25℃, at rated DC blocking voltage 1
Maximum DC reverse current IR 50 μA TA=100℃, at rated DC blocking voltage 1
Maximum reverse recovery time trr 35 ns NOTE 1: IF=0.5A, IR=1.0A, Irr=0.25A 1
Typical thermal resistance, junction to ambient RθJA 30 ℃/W 0.375in (9.5mm) lead length, P.C.B. mounted (NOTE 3) 1
Operating junction and storage temperature range TJ,TSTG -65 150 ℃ 1

CAD (KiCad official)

  • Symbol: SF34
  • Footprint: Diode_THT:D_DO-201AD_P15.24mm_Horizontal
  • 3D model: DO-201AD (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: MDD Microdiode Semiconductor datasheet (3 pp, sha256 f90c5c18eda82958, retrieved 2026-10-14, 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