component

BSD5A051U

Public Made by Adom

by adom

BORN ESD Protection Devices, SOD-523. 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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BSD5A051U

BORN · ESD Protection Devices · SOD-523

BSD5A051U from BORN, in a SOD-523. 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 BORN
Package SOD-523
Category Circuit Protection
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
Reverse Stand-Off Voltage VRWM 5 V 2
Reverse Breakdown Voltage VBR 6 7.2 9.5 V IT=1mA 2
Reverse Leakage Current IR 0.5 uA VRWM=5V,T=25◦C 2
Clamping Voltage VC 14 18 V IPP=4A, tp =8/20us 2
Junction Capacitance Cj 0.7 0.9 pF VR=0V,f=1MHZ 2
Peak Pulse Power PPP 72 Watts tp =8/20μs 2
Peak Pulse Current IPP 4 A tp =8/20μs 2
ESD per IEC 61000-4-2 (Air) VESD 20 KV 2
ESD per IEC 61000-4-2 (Contact) VESD 15 KV 2
Lead Soldering Temperature TL 260 ◦C 10 seconds 2
Junction Temperature TJ -55 150 ◦C 2
Storage Temperature Tstg -55 150 ◦C 2

CAD (KiCad official)

  • Symbol: BSD5A051U
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523 (KiCad packages3D, STEP)
  • 3D model files: bsd5a051u-etched.step / bsd5a051u-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bsd5a051u.step / bsd5a051u.glb are the bare package body.

Provenance

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

  • Datasheet: BORN datasheet (4 pp, sha256 f6f43052dea1be3c, retrieved 2026-10-21, 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