component

SZ1SMB60AT3G

Public Made by Adom

by adom

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

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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sz1smb60at3g-hero.glb sz1smb60at3g: hero GLB from the etched model (keeps the MPN mark) · Ray 17d ago
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SZ1SMB60AT3G

Littelfuse · ESD And Surge Protection (TVS/ESD) · SMB

SZ1SMB60AT3G from Littelfuse, in a SMB. 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 uni-directional TVS, identified by the color band on the package; this MPN (SZ1SMB60AT3G) is rated 60 V working peak reverse voltage (VRWM) and 600 W peak power at 1.0 ms.
2 Anode passive Anode of the uni-directional TVS, opposite the color-band cathode; the device has a maximum clamping voltage of 96.8 V at 6.2 A IPP for this part.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package SMB
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 (Min) VBR 66.7 V IT = 1.0 mA (Note 7) 3
Breakdown Voltage (Nom) VBR 70.2 V IT = 1.0 mA (Note 7) 3
Breakdown Voltage (Max) VBR 73.7 V IT = 1.0 mA (Note 7) 3
Maximum Reverse Leakage Current IR 5 µA @ VRWM = 60 V 3
Forward Voltage VF 3.5 V IF = 30 A (Note 5), uni-directional 2
Peak Power Dissipation PPK 600 W TL = 25°C, pulse width = 1 ms (Note 1) 1
DC Power Dissipation @ TL = 75°C (zero lead length) PD 3 W TL = 75°C, measured zero lead length (Note 2) 1
DC Power Dissipation @ TA = 25°C PD 0.55 W TA = 25°C (Note 3) 1
Forward Surge Current IFSM 100 A TA = 25°C, 1/2 sine wave, PW = 8.3 ms (Note 4), uni-directional only 1
Operating and Storage Temperature Range TJ, Tstg -65 150 °C 1
Clamping Voltage VC 96.8 V @ IPP = 6.2 A (Note 8) 3
Thermal Resistance, Junction-to-Lead RθJL 40 °C/W Measured zero lead length (Note 2) 1
Thermal Resistance, Junction-to-Ambient RθJA 226 °C/W FR-4 board, Littelfuse minimum recommended footprint (Note 3) 1
Derate Above 75°C (DC power, lead) PD 25 mW/°C Above TL = 75°C 1
Derate Above 25°C (DC power, ambient) PD 4.4 mW/°C Above TA = 25°C 1

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 and the terminal finish material is tin(Sn) (IPC/ 1

CAD (KiCad official)

  • Symbol: SZ1SMB60AT3G
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: sz1smb60at3g-etched.step / sz1smb60at3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sz1smb60at3g.step / sz1smb60at3g.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (7 pp, sha256 b867ff8d1ae59140, retrieved 2026-10-16, 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