component

MSESD9B3.3ST5G

Public Made by Adom

by adom

MSKSEMI ESD And Surge Protection (TVS/ESD), SOD-923. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentcircuit protectionmsesd9b3.3st5gfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 16d ago
viewers msesd9b3-3st5g: viewers · Ray 16d ago
msesd9b3-3st5g-etched.glb Publish 0.1.0 · Ray 16d ago
msesd9b3-3st5g-etched.step msesd9b3-3st5g: factory component page (tier=lcsc) · Ray 16d ago
msesd9b3-3st5g-hero.glb msesd9b3-3st5g: hero GLB from the etched model (keeps the MPN mark) · Ray 16d ago
msesd9b3-3st5g-hero.overlay.json Publish 0.1.0 · Ray 16d ago
msesd9b3-3st5g.glb Publish 0.1.0 · Ray 16d ago
msesd9b3-3st5g.kicad_mod Publish 0.1.0 · Ray 16d ago
msesd9b3-3st5g.kicad_sym Publish 0.1.0 · Ray 16d ago
msesd9b3-3st5g.lbr Publish 0.1.0 · Ray 16d ago
msesd9b3-3st5g.step Publish 0.1.0 · Ray 16d ago
package.json Publish 0.1.0 · Ray 16d ago
page.json Set visibility: public · Ray 16d ago
README.md Publish 0.1.0 · Ray 16d ago

MSESD9B3.3ST5G

MSKSEMI · ESD And Surge Protection (TVS/ESD) · SOD-923

MSESD9B3.3ST5G from MSKSEMI, in a SOD-923. 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 1 passive Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation.
2 2 passive Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOD-923
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
Junction Capacitance Cj 12 18 pF VR=0V f = 1MHz 3
Peak Pulse Power Ppp 44 W tp=8/20μs 3
Operating Temperature TJ -55 150 ℃ 3
Storage Temperature TSTG -55 150 ℃ 3
Peak Reverse Working Voltage VRWM 3.3 V 3
Breakdown Voltage VBR 5 V It = 1mA 3
Reverse Leakage Current IR 2.5 μA VRWM = 5V T=25℃ 3
Maximum Reverse Peak Pulse Current IPP 2.3 A 3
Clamping Voltage VC 19 V IPP MAX, tP =8/20μs 3

CAD (KiCad official)

  • Symbol: MSESD9B3.3ST5G
  • Footprint: Diode_SMD:D_SOD-923
  • 3D model: SOD-923 (KiCad packages3D, STEP)
  • 3D model files: msesd9b3-3st5g-etched.step / msesd9b3-3st5g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); msesd9b3-3st5g.step / msesd9b3-3st5g.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (7 pp, sha256 378b3cadcb28310f, retrieved 2026-10-15, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal 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