component
SMAJ70A
Public Made by Adomby adom
Shandong Jingdao Microelectronics TVS, SMA. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownSMAJ70A
Shandong Jingdao Microelectronics · TVS · SMA
SMAJ70A from Shandong Jingdao Microelectronics, 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; the datasheet gives no further electrical limit for this pin beyond its designation. |
| 2 | Anode | passive | Anode terminal of the unipolar TVS diode; the datasheet gives no further electrical limit for this pin beyond its designation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (unidirectional, SMAJ70A) | VBR | 77.8 | 86 | V | IT = 1 mA | 2 | |
| Reverse leakage current | IR | 1 | μA | @ VRRM = 70 V | 2 | ||
| Max. clamp voltage | VC | 113 | V | @ IPP = 3.5 A | 2 | ||
| Peak pulse power dissipation | PPPM | 400 | W | TA=25°C, 10/1000 μs waveform (Notes 1, 2, 4, Fig 1) | 1 | ||
| Peak forward surge current | IFSM | 60 | A | 8.3 ms single half sine-wave, JEDEC method (Note 3, Fig 4) | 1 | ||
| ESD voltage per IEC 61000-4-2, contact | VESD1 | 30 | kV | Contact discharge | 1 | ||
| ESD voltage per IEC 61000-4-2, air | VESD2 | 30 | kV | Air discharge | 1 | ||
| Operating junction and storage temperature range | Tj, Tstg | -65 | 150 | °C | 1 | ||
| Reverse stand-off voltage | VRRM | 70 | V | 2 | |||
| Typical thermal resistance junction to ambient | RθJA | 30 | °C/W | Note 2: mounted on 5 mm copper pads to each terminal | 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 5mm copper pads to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
SMAJ70A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
smaj70a-etched.step/smaj70a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj70a.step/smaj70a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256
d64569d4b0ef76b3, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).