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Ray Publish 0.1.0 35191f6 10d ago

S3KB

onsemi · Diodes - General Purpose · DO-214AA(SMB)

S3KB from onsemi, in a DO-214AA(SMB). 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, identified by the polarity mark on the package; the S3KB is rated for a repetitive peak reverse voltage VRRM of 800 V and an average forward rectified current IF(AV) of 3 A.
2 Anode passive Anode terminal; the S3KB withstands a peak forward surge current IFSM of 80 A (8.3 ms single half sine-wave superimposed on rated load).

Key specifications

Parameter Value
Manufacturer onsemi
Package DO-214AA(SMB)
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
Repetitive Peak Reverse Voltage VRRM 800 V 1
RMS Reverse Voltage VRMS 560 V 1
DC Blocking Voltage VR 800 A 1
Average Forward Rectified Current IF(AV) 3 A 1
Peak Forward Surge Current IFSM 80 A 8.3 ms single half sine-wave superimposed on rated load 1
Operating Junction Temperature Range TJ -55 150 °C 1
Storage Temperature Range TSTG -55 150 °C 1
Instantaneous Forward Voltage VF 1.15 V IF = 3 A (pulse test, PW = 300 µs, 1% duty cycle) 1
Reverse Current at Rated VR IR 10 A Rated VR, TJ = 25°C 1
Reverse Current at Rated VR IR 250 A Rated VR, TJ = 125°C 1
Typical Thermal Resistance, Junction-to-Ambient RJA 148 °C/W Device mounted on FR-4 PCB, board size 76.2 mm x 114.3 mm per JESD51-3 (Note 1) 1
Typical Thermal Characteristics, Junction-to-Lead JL 14 °C/W 1

CAD (KiCad official)

  • Symbol: S3KB
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
  • 3D model files: s3kb-etched.step / s3kb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); s3kb.step / s3kb.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (5 pp, sha256 81dcbaf82d876991, retrieved 2026-10-15, 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