component
SMDJ120A
Public Made by Adomby adom
Shandong Jingdao Microelectronics TVS, SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 11d ago |
| viewers | 11d ago |
| package.json | 11d ago |
| page.json | 11d ago |
| README.md | 11d ago |
| smdj120a-etched.glb | 11d ago |
| smdj120a-etched.step | 11d ago |
| smdj120a-hero.glb | 11d ago |
| smdj120a-hero.overlay.json | 11d ago |
| smdj120a.glb | 11d ago |
| smdj120a.kicad_mod | 11d ago |
| smdj120a.kicad_sym | 11d ago |
| smdj120a.lbr | 11d ago |
| smdj120a.step | 11d ago |
SMDJ120A
Shandong Jingdao Microelectronics · TVS · SMC
SMDJ120A 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 unidirectional SMDJ120A TVS diode (stand-off voltage 120 V, 3000W peak pulse power at 10/1000us); in bipolar parts the pins are interchangeable. |
| 2 | Anode | passive | Anode terminal of the unidirectional SMDJ120A TVS diode (stand-off voltage 120 V, 3000W peak pulse power at 10/1000us). |
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 | 120 | V | 2 | |||
| Breakdown Voltage | VBR | 133 | 147 | V | @ IT | 2 | |
| Test Current | IT | 1 | mA | 2 | |||
| Max. Clamp Voltage | VC | 193 | V | @ IPP | 2 | ||
| Max. Peak Pulse Current | IPP | 15.5 | A | 2 | |||
| Max. Reverse Leakage | IR | 2 | uA | @ VR | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 3000 | W | TA=25°C, 10x1000 us waveform | 1 | ||
| Steady State Power Dissipation | 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, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100A, unidirectional only | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 15 | ℃/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | ℃/W | 1 | |||
| Operating Junction and Storage Temperature Range | Tj, TSTG | -65 | 150 | ℃ | 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 | 2. Mounted on copper pad area of 0.31x0.31" (8.0 x 8.0mm) to each terminal | 1 |
CAD (KiCad official)
- Symbol:
SMDJ120A - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
smdj120a-etched.step/smdj120a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smdj120a.step/smdj120a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256
81fad062f70e60db, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).