component

SMAJ33A-JSM

Public Made by Adom

by adom

JSMSEMI ESD And Surge Protection (TVS/ESD), SMA. 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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docs Publish 0.1.0 · Ray 23d ago
viewers smaj33a-jsm: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
package.json Publish 0.1.0 · Ray 23d ago
page.json Set visibility: public · Ray 23d ago
README.md Publish 0.1.0 · Ray 23d ago
smaj33a-jsm-etched.glb Publish 0.1.0 · Ray 23d ago
smaj33a-jsm-etched.step smaj33a-jsm: factory component page (tier=lcsc) · Ray 23d ago
smaj33a-jsm-hero.glb smaj33a-jsm: hero GLB from the etched model (keeps the MPN mark) · Ray 23d ago
smaj33a-jsm-hero.overlay.json Publish 0.1.0 · Ray 23d ago
smaj33a-jsm.glb Publish 0.1.0 · Ray 23d ago
smaj33a-jsm.kicad_mod Publish 0.1.0 · Ray 23d ago
smaj33a-jsm.kicad_sym smaj33a-jsm: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
smaj33a-jsm.lbr smaj33a-jsm: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
smaj33a-jsm.step Publish 0.1.0 · Ray 23d ago

SMAJ33A-JSM

JSMSEMI · ESD And Surge Protection (TVS/ESD) · SMA

SMAJ33A-JSM from JSMSEMI, in a SMA. 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 terminal of the unipolar TVS diode, listed as pin 1 in the PINNING table; the datasheet states no pin-specific electrical limit for this pin.
2 Anode passive Anode terminal of the unipolar TVS diode, listed as pin 2 in the PINNING table; the datasheet states no pin-specific electrical limit, only the device maximum ratings.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SMA
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
Peak power dissipation with a 10/1000μs waveform PPPM 400 W 10/1000μs waveform, *1 (FIG.1) 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1
Typical Thermal Resistance junction to ambient RθJA 70 °C/W *2: device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area 1
Typical Thermal Resistance junction to case RθJC 25 °C/W *2: device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area 1
Typical Thermal Resistance junction to lead RθJL 30 °C/W *2: device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area 1
Breakdown Voltage (SMAJ33A, minimum) VBR 36.7 V @ IT (test current 1 mA) 2
Breakdown Voltage (SMAJ33A, maximum) VBR 40.6 V @ IT (test current 1 mA) 2
Max. Peak Pulse Current (SMAJ33A) IPP_MAX 5.5 A 2
Max. Clamping Voltage (SMAJ33A) VC_MAX 53.3 V @ IPP 2
Reverse Standoff Voltage (SMAJ33A) VRWM 33 V 2

CAD (KiCad official)

  • Symbol: SMAJ33A-JSM
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA (KiCad packages3D, STEP)
  • 3D model files: smaj33a-jsm-etched.step / smaj33a-jsm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj33a-jsm.step / smaj33a-jsm.glb are the bare package body.

Provenance

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

  • Datasheet: JSMSEMI datasheet (5 pp, sha256 070cf4c2f9c4dec1, retrieved 2026-10-15, 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