component

1.5SMB30A

Public Made by Adom

by adom

Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA(SMBJ). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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1.5SMB30A

Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)

1.5SMB30A from Littelfuse, in a DO-214AA(SMBJ). 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 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package DO-214AA(SMBJ)
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 (uni-directional, 1.5SMB30A) VBR 28.5 31.5 V @ IT = 1 mA 2
Maximum Clamping Voltage @ Ipp 10/1000µs VC 41.4 V 10/1000µs waveform, Ipp = 36.7 A 2
Maximum Peak Pulse Current 10/1000µs Ipp 36.7 A 10/1000µs waveform 2
Maximum Clamping Voltage @ Ipp 8/20µs VC 53.5 V 8/20µs waveform, Ipp = 201.9 A 2
Maximum Peak Pulse Current 8/20µs Ipp 201.9 A 8/20µs waveform 2
Maximum Reverse Leakage Current IR 1 µA @ VR 2
Maximum Temperature Coefficient of VBR 0.093 %/C 2
Stand-off Voltage VR 25.6 V 2
Peak Pulse Power Dissipation PPPM 1500 W 10/1000µs waveform (Fig.2), Notes 1, 2 1
Power Dissipation on Infinite Heat Sink PD 5 W at TL = 50°C 1
Peak Forward Surge Current IFSM 120 A 8.3ms single half sine wave (Note 3) 1
Maximum Instantaneous Forward Voltage VF 5 V at 50A, unidirectional only 1
Operating Temperature Range TJ -65 150 °C 1
Storage Temperature Range TSTG -65 175 °C 1
Typical Thermal Resistance Junction to Lead RθJL 20 °C/W Typical 1
Typical Thermal Resistance Junction to Ambient RθJA 100 °C/W Typical 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 • Matte tin lead-free Plated • Halogen free and RoHS 1

CAD (KiCad official)

  • Symbol: 1.5SMB30A
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
  • 3D model files: 1-5smb30a-etched.step / 1-5smb30a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-5smb30a.step / 1-5smb30a.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 edddb435792266f3, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band 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