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Contents

README

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AZC199-02S-MS

MSKSEMI · ESD And Surge Protection (TVS/ESD) · SOT-23

AZC199-02S-MS from MSKSEMI, in a SOT-23. 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 I/O1 bidirectional Protected data line with IEC61000-4-2 ESD protection of ±20kV (contact and air) and IEC61000-4-5 surge protection of 4A (8/20μs), with ultra-low capacitance of 0.4pF typ.
2 I/O2 bidirectional Protected data line with IEC61000-4-2 ESD protection of ±20kV (contact and air) and IEC61000-4-5 surge protection of 4A (8/20μs), with ultra-low capacitance of 0.4pF typ.
3 GND power_in Common ground reference for the two protected I/O lines; the datasheet gives no separate electrical limit for this pin.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOT-23
Category Circuit Protection
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
Peak pulse power (tp = 8/20μs) Ppk 60 W tp = 8/20μs 3
Peak pulse current (tp = 8/20μs) IPP 4 A tp = 8/20μs 3
ESD according to IEC61000-4-2 air discharge VESD -20 20 kV IEC61000-4-2 air discharge 3
ESD according to IEC61000-4-2 contact discharge VESD -20 20 kV IEC61000-4-2 contact discharge 3
Junction temperature TJ 125 ℃ 3
Operating temperature TOP -40 85 ℃ 3
Lead temperature TL 260 ℃ 3
Storage temperature TSTG -55 150 ℃ 3
Reverse maximum working voltage VRWM 5 V 3
Reverse leakage current IR 100 nA VRWM = 5V 3
Reverse breakdown voltage VBR 7 8 9 V IT = 1mA 3
Forward voltage VF 0.6 0.9 1.2 V IT = 10mA 3
Clamping voltage (TLP) VCL 20 V IPP = 16A, tp = 100ns 3
Dynamic resistance (TLP) RDYN 0.65 Ω 3
Clamping voltage (IEC61000-4-5) VCL 11 V IPP = 1A, tp = 8/20μs 3
Clamping voltage (IEC61000-4-5) VCL 15 V IPP = 4A, tp = 8/20μs 3
Junction capacitance, any I/O pin to GND CJ 0.4 0.65 pF VR = 0V, f = 1MHz 3
Junction capacitance, between any I/O pins CJ 0.25 0.4 pF VR = 0V, f = 1MHz 3

CAD (KiCad official)

  • Symbol: AZC199-02S-MS
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: azc199-02s-ms-etched.step / azc199-02s-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); azc199-02s-ms.step / azc199-02s-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (7 pp, sha256 330770a6926d4cab, retrieved 2026-10-18, 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