component

ESD9N12BA-2

Public Made by Adom

by adom

WILLSEMI(Will Semicon) ESD Protection Devices, DFN1006-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ESD9N12BA-2

WILLSEMI(Will Semicon) · ESD Protection Devices · DFN1006-2L

ESD9N12BA-2 from WILLSEMI(Will Semicon), in a DFN1006-2L. 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 Pin1 passive One of the two terminals of the single-line bidirectional TVS, which protects one data or transmission line with a stand-off voltage of ±12V max. and ±30kV contact-discharge ESD protection per IEC61000-4-2.
2 Pin2 passive The other terminal of the single-line bidirectional TVS, which clamps surges up to 5.5A (8/20μs) per IEC61000-4-5 with a stand-off voltage of ±12V max.

Key specifications

Parameter Value
Manufacturer WILLSEMI(Will Semicon)
Package DFN1006-2L
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
Peak pulse power Ppk 99 W tp = 8/20μs 2
Peak pulse current IPP 5.5 A tp = 8/20μs 2
ESD according to IEC61000-4-2 air discharge VESD -30 30 kV IEC61000-4-2 air discharge 2
ESD according to IEC61000-4-2 contact discharge VESD -30 30 kV IEC61000-4-2 contact discharge 2
Junction temperature TJ 125 oC 2
Operating temperature TOP -40 85 oC 2
Lead temperature TL 260 oC 2
Storage temperature TSTG -55 150 oC 2
Stand-off voltage VRWM -12 12 V 2
Reverse leakage current IR 0.1 50 nA VRWM = 12V 2
Reverse breakdown voltage VBR 13 16.5 V IT = 1mA 2
Junction capacitance CJ 27 35 pF VR = 0V, f = 1MHz 2
Junction capacitance CJ 14 20 pF VR = 12V, f = 1MHz 2
Clamping voltage VCL 20 V IPP = 16A, tp = 100ns 2
Clamping voltage VCL 16 V IPP = 1A, tp = 8/20μs 2
Clamping voltage VCL 18 V IPP = 5.5A, tp = 8/20μs 2

CAD (KiCad official)

  • Symbol: ESD9N12BA-2
  • Footprint: Diode_SMD:D_SOD-882
  • 3D model: DFN1006-2L (KiCad packages3D, STEP)
  • 3D model files: esd9n12ba-2-etched.step / esd9n12ba-2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esd9n12ba-2.step / esd9n12ba-2.glb are the bare package body.

Provenance

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

  • Datasheet: WILLSEMI(Will Semicon) datasheet (6 pp, sha256 7b5519448ca53e38, retrieved 2026-10-21, 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