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SBDB4045TCTB

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Changjing Schottky Diodes, TO-263-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SBDB4045TCTB

Changjing · Schottky Diodes · TO-263-2L

SBDB4045TCTB from Changjing, in a TO-263-2L. 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 ANODE passive Anode terminal of the Schottky barrier rectifier, one of two anode pins (1 and 3) on the TO-263-2L package; the device is rated 45 V VRRM and 40 A average output current (2×20 A).
2 CATHODE passive Cathode terminal of the Schottky barrier rectifier, rated 45 V VRRM and 40 A average rectified output current (2×20 A) per the maximum ratings.
3 ANODE passive Anode terminal of the Schottky barrier rectifier, the second anode pin (with pin 1) on the TO-263-2L package; the device is rated 45 V VRRM and 40 A average output current (2×20 A).

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-263-2L
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
Reverse voltage V(BR) 45 V IR=1mA 1
Peak repetitive reverse voltage VRRM 45 V 1
RMS reverse voltage VR(RMS) 31.5 V 1
Average rectified output current IO 40 A 1
Non-Repetitive peak forward surge current IFSM 250 A 8.3ms half sine wave 1
Storage temperature Tstg -55 150 ℃ 1
Thermal resistance from junction to ambient RΘJA 62.5 ℃/W 1
Thermal resistance from junction to case RΘJC 2 ℃/W Tc=25℃ 1

CAD (KiCad official)

  • Symbol: SBDB4045TCTB
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-2L (KiCad packages3D, STEP)
  • 3D model files: sbdb4045tctb-etched.step / sbdb4045tctb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sbdb4045tctb.step / sbdb4045tctb.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (3 pp, sha256 6ee6bc14fc450820, retrieved 2026-10-19, 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