component

SMDJ54A

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.

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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 smdj54a: symbol repaired (D_Zener, cathode pad 1) · Ray 2d 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
smdj54a-etched.glb Publish 0.1.0 · Ray 23d ago
smdj54a-etched.step smdj54a: factory component page (tier=lcsc) · Ray 23d ago
smdj54a-hero.glb smdj54a: hero GLB from the etched model (keeps the MPN mark) · Ray 23d ago
smdj54a-hero.overlay.json Publish 0.1.0 · Ray 23d ago
smdj54a.glb Publish 0.1.0 · Ray 23d ago
smdj54a.kicad_mod Publish 0.1.0 · Ray 23d ago
smdj54a.kicad_sym smdj54a: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smdj54a.lbr smdj54a: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smdj54a.step Publish 0.1.0 · Ray 23d ago

SMDJ54A

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

SMDJ54A 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 terminal of the unipolar SMDJ54A transient voltage suppressor, with reverse stand-off voltage VRWM of 54 V per Table 1.
2 Anode passive Anode terminal of the unipolar SMDJ54A transient voltage suppressor, which is the terminal opposite the cathode in the SMC package.

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
Peak Pulse Power Dissipation (10x1000us waveform) PPPM 3000 W 10x1000us waveform, TA=25°C 1
Power Dissipation on infinite heat sink PM(AV) 6.5 W Infinite heat sink at TA=50°C 1
Peak Forward Surge Current IFSM 300 A 8.3ms single half sine wave (Note 3) 1
Operating Junction and Storage Temperature Range Tj, TSTG -65 150 °C 1
Reverse Stand-off Voltage VRWM 54 V SMDJ54A (unidirectional) 2
Breakdown Voltage (min) VBR 60 V @ IT=1 mA 2
Breakdown Voltage (max) VBR 66.3 V @ IT=1 mA 2
Max. Peak Pulse Current IPP 34.4 A 10/1000us waveform 2
Max. Clamp Voltage VC 87.1 V @ IPP=34.4 A 2
Max. Reverse Leakage Current IR 2 uA @ VR=VRWM 2
Typical Thermal Resistance Junction to Lead RUJL 15 ℃/W 1
Typical Thermal Resistance Junction to Ambient RUJA 75 ℃/W Copper pad 0.31x0.31 in (Note 2) 1

CAD (KiCad official)

  • Symbol: SMDJ54A
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: smdj54a-etched.step / smdj54a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smdj54a.step / smdj54a.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 a89aa326add6c47a, 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