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SD12T1G

Public Made by Adom

by adom

onsemi ESD And Surge Protection (TVS/ESD), SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

SD12T1G

onsemi · ESD And Surge Protection (TVS/ESD) · SOD-323

SD12T1G from onsemi, in a SOD-323. 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 CATHODE passive Cathode of the unidirectional ESD protection diode (marked by polarity band); SD12T1G has VRWM 12 V, VBR 13.3 to 15.75 V at 1.0 mA.
2 ANODE passive Anode of the unidirectional ESD protection diode; typically connected to ground, and the device meets IEC61000-4-2 Level 4 (15 kV air, 8 kV contact).

Key specifications

Parameter Value
Manufacturer onsemi
Package SOD-323
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
Breakdown Voltage VBR 13.3 15.75 V IT = 1.0 mA 2
Working Peak Reverse Voltage VRWM 12 V 2
Maximum Reverse Leakage Current IR 1 A @ VRWM 2
Clamping Voltage VC 19 V IPP = 5 A, 8 × 20 s pulse waveform 2
Maximum Reverse Peak Pulse Current IPP 15 A 8 × 20 s pulse waveform 2
Clamping Voltage @ Max IPP VC 25 V @ Max IPP, 8 × 20 s pulse waveform 2
Capacitance C 150 pF VR = 0 V, f = 1.0 MHz 2
Peak Power Dissipation Ppk 350 Watts @ 20 s, TL ≤ 25°C 2
IEC 61000-4-2 ESD Air -15 15 kV Air 2
IEC 61000-4-2 ESD Contact -8 8 kV Contact 2
IEC 61000-4-4 EFT 40 A 2
ESD Voltage (HBM) VPP 30 kV Human Body Model waveform per IEC 61000-4-2 2
Total Power Dissipation on FR-4 Board PD 300 mW TA = 25°C, FR-4 board, mounting pad 1 cm2 2
Power Derating above 25°C 2.4 mW/°C Derate above 25°C 2
Thermal Resistance, Junction-to-Ambient RJA 416 °C/W 2
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 2
Lead Solder Temperature TL 260 °C Maximum, 10 second duration 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin LEAD FINISH: 100% Matte Sn (Tin) MOUNTING POSITION: Any 1

CAD (KiCad official)

  • Symbol: SD12T1G
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: sd12t1g-etched.step / sd12t1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sd12t1g.step / sd12t1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (4 pp, sha256 195d4eac64ad90dd, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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