component

SMCJ33A-L

Public Made by Adom

by adom

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

componentcircuit protectionsmcj33a-lfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 15d ago
viewers smcj33a-l: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
package.json Publish 0.1.0 · Ray 15d ago
page.json Set visibility: public · Ray 15d ago
README.md Publish 0.1.0 · Ray 15d ago
smcj33a-l-etched.glb Publish 0.1.0 · Ray 15d ago
smcj33a-l-etched.step smcj33a-l: factory component page (tier=lcsc) · Ray 15d ago
smcj33a-l-hero.glb smcj33a-l: hero GLB from the etched model (keeps the MPN mark) · Ray 15d ago
smcj33a-l-hero.overlay.json Publish 0.1.0 · Ray 15d ago
smcj33a-l.glb Publish 0.1.0 · Ray 15d ago
smcj33a-l.kicad_mod Publish 0.1.0 · Ray 15d ago
smcj33a-l.kicad_sym smcj33a-l: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smcj33a-l.lbr smcj33a-l: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smcj33a-l.step Publish 0.1.0 · Ray 15d ago

SMCJ33A-L

Shandong Jingdao Microelectronics · ESD And Surge Protection (TVS/ESD) · SMC

SMCJ33A-L from Shandong Jingdao Microelectronics, in a SMC. 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 unidirectional TVS diode (SMCJ33A-L: 33V reverse stand-off, 36.7V min breakdown at 1mA, 53.3V max clamping at 11.3A peak pulse current).
2 Anode passive Anode of the TVS diode, connected to the protected return or ground side (SMCJ33A-L: 33V reverse stand-off, 53.3V max clamping at 11.3A).

Key specifications

Parameter Value
Manufacturer Shandong Jingdao Microelectronics
Package SMC
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
Reverse Stand-off Voltage VRWM 33 V 2
Breakdown Voltage VBR 36.7 40.6 V @ IT 2
Test Current IT 1 mA 2
Maximum Clamping Voltage VC 53.3 V @ IPP = 11.3 A 2
Peak Pulse Current IPP 11.3 A 10/1000 us waveform 2
Maximum Reverse Leakage IR 1 μA @ VRWM 2
Peak Pulse Power Dissipation PPPM 600 W 10/1000 us waveform 1
Peak Forward Surge Current IFSM 100 A 8.3ms single half sine-wave superimposed on rated load (JEDEC method), UNI 1
Maximum Instantaneous Forward Voltage VF 3.5 V at 100 A, unidirectional only 1
Thermal Resistance Junction to Ambient RθJA 75 °C/W Typical, Note 1 1
Thermal Resistance Junction to Lead RθJL 15 °C/W Typical, Note 1 1
Operating Junction and Storage Temperature Range Tj, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: SMCJ33A-L
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: smcj33a-l-etched.step / smcj33a-l-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smcj33a-l.step / smcj33a-l.glb are the bare package body.

Provenance

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

  • Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256 fe884aa643fb34c4, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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