component

1.5SMBJ18CA

Public Made by Adom

by adom

PAKER ESD And Surge Protection (TVS/ESD), SMB. Pinout reviewed by a person 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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1.5SMBJ18CA

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

1.5SMBJ18CA from PAKER, 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 Terminal 1 passive Bidirectional TVS terminal with no cathode band, interchangeable with the other terminal; 18V stand-off (VR), 29.2V max clamping at 51.4A IPP, 1500W peak pulse power (10/1000us).
2 Terminal 2 passive Bidirectional TVS terminal with no cathode band, interchangeable with the other terminal; 18V stand-off (VR), 29.2V max clamping at 51.4A IPP, 1500W peak pulse power (10/1000us).

Key specifications

Parameter Value
Manufacturer PAKER
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 VBR 20 22.1 V @ IT = 1 mA 2
Maximum Reverse Leakage IR 1 μA @ VR = 18 V 2
Maximum Clamping Voltage VC 29.2 V @ IPP = 51.4 A 2
Maximum Peak Pulse Current IPP 51.4 A 2
Reverse Stand-off Voltage VR 18 V 2
Test Current IT 1 mA 2
Peak Pulse Power Dissipation PPPM 1500 W 10/1000us waveform, non-repetitive; mounted on 5×5mm copper pad 1
Steady State Power Dissipation PD 5 W Infinite heatsink at TA=50°C 1
Peak Forward Surge Current IFSM 150 A 8.3ms single half sine wave, duty cycle=4 per minute max 1
Operating Temperature Range TJ -55 150 ℃ 1
Storage Temperature Range TSTG -55 150 ℃ 1
Thermal Resistance Junction to Lead RθJL 20 ℃/W Typical 1
Thermal Resistance Junction to Ambient RθJA 100 ℃/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 copper Notes2: Mounted on copper pad area of 5×5mm to each terminal. 1

CAD (KiCad official)

  • Symbol: 1.5SMBJ18CA
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: 1-5smbj18ca-etched.step / 1-5smbj18ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-5smbj18ca.step / 1-5smbj18ca.glb are the bare package body.

Provenance

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

  • Datasheet: PAKER datasheet (3 pp, sha256 0c7cd43855d497ce, retrieved 2026-10-22, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF