component

SMAJ140A

Public Made by Adom

by adom

BORN ESD And Surge Protection (TVS/ESD), SMA(DO-214AC). 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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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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SMAJ140A

BORN · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

SMAJ140A from BORN, in a SMA(DO-214AC). 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 BORN
Package SMA(DO-214AC)
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 155 171 V @ IT = 1 mA 3
Maximum Clamping Voltage VC 225 V @ IPP 3
Maximum Peak Pulse Current IPP 1.7 A 3
Maximum Reverse Leakage Current IR 1 μA @ VR (VR = 140 V) 3
Peak Pulse Power Dissipation PPPM 400 W 10/1000us waveform, non-repetitive (Note1); mounted on 5×5mm copper pad (Note2) 2
Steady State Power Dissipation PD 3.3 W Infinite heatsink at TA=50°C (Note3) 2
Peak Forward Surge Current IFSM 40 A 8.3ms single half sine wave or equivalent square wave, duty cycle 4 per minute max (Note4) 2
Maximum Instantaneous Forward Voltage VFM 3.5 V @ 20A, unidirectional only, VBR ≤ 200V (Note5) 2
Operating Temperature Range TJ -55 150 ℃ 2
Storage Temperature Range TSTG -55 150 ℃ 2
Reverse Stand off Voltage VR 140 V 3
Typical Thermal Resistance Junction to Lead RθJL 30 ℃/W 2
Typical Thermal Resistance Junction to Ambient RθJA 120 ℃/W 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: Matte Tin ■ Computer ■ Case Material: Epoxy Molding Compound. ■ Industrial electronic 1

CAD (KiCad official)

  • Symbol: SMAJ140A
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj140a-etched.step / smaj140a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj140a.step / smaj140a.glb are the bare package body.

Provenance

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

  • Datasheet: BORN datasheet (7 pp, sha256 394755ecaa2b183f, retrieved 2026-10-21, 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